Patent Application
20230336924
This application relates generally to ear-level electronic systems and devices, including hearing devices, personal amplification devices, hearing aids, hearables, physiologic monitoring devices, biometric devices, position and/or motion sensing devices, and other ear-worn electronic devices.
Embodiments are directed to an ear-worn electronic device comprising a housing configured to fit at least partially in an ear of a wearer, a power source situated in the housing, and a temperature sensor arrangement situated in or on the housing and coupled to the power source. The temperature sensor arrangement is configured to generate sensor signals in response to heat generated in the wearer's ear and a controller, situated in the housing and coupled to the power source and the temperature sensor arrangement, is configured to assess a fit of the device using the sensor signals.
Embodiments are directed to an ear-worn electronic device comprising a housing configured to fit at least partially in an ear of a wearer, a power source situated in the housing, and a temperature sensor arrangement coupled to the power source and comprising at least two temperature sensors situated in or on the housing and spaced apart from one another. The temperature sensors are configured to generate sensor signals in response to heat generated in the wearer's ear and a controller, situated in the housing and coupled to the power source and the temperature sensor arrangement, is configured to assess a fit of the device using the sensor signals.
Embodiments are directed to a method implemented by an ear-worn electronic device configured for deployment in, on or about an ear of a wearer. The method comprises generating sensor signals by a temperature sensor arrangement of the device in response to heat generated in the wearer's ear, receiving the sensor signals by a controller, assessing, by the controller, a fit of the device in the wearer's ear using the sensor signals, and generating, by the controller, an output indicative of the device fit assessment.
The above summary is not intended to describe each disclosed embodiment or every implementation of the present disclosure. The figures and the detailed description below more particularly exemplify illustrative embodiments.
Throughout the specification reference is made to the appended drawings wherein:
The figures are not necessarily to scale. Like numbers used in the figures refer to like components. However, it will be understood that the use of a number to refer to a component in a given figure is not intended to limit the component in another figure labeled with the same number.
Embodiments of the disclosure are directed to an ear-worn electronic device configured to implement an objective device fit evaluation. The fit for any in-ear device is essential for many reasons, such as comfort of the wearer, sound quality, and accuracy of biometric measurements, among others. For example, and in the context of a hearing aid, signal processing parameters of various signal processing algorithms are typically determined during an initial fitting session in an audiologist's office and programmed into the hearing aid by activating desired algorithms and setting algorithm parameters in a non-volatile memory of the hearing aid. Generally, the audiologist spends relatively little time on physically fitting the hearing aid to the wearer in comparison to the time required to properly program the hearing aid to properly compensate for the wearer's hearing loss. Moreover, the quality of the fit can be difficult to assess even for trained specialists. Relying on subjective feedback from the wearer to self-assess the fit is inherently problematic and unreliable.
In the context of consumer hearables, such as earbuds, different sizes and styles of tips and anchoring wings are often provided. However, it takes some guesswork and experimentation with different combinations of tips and/or anchoring wings to find a potentially good match for a particular wearer's ears. A poorly fitted device can ruin the user experience. An ear-worn electronic device (e.g., a consumer earbud) which has a poor fit can be described as a device which is not securely situated in the desired location and which undesirably displaces under influence of motion.
Embodiments of the present disclosure are directed to ear-worn electronic devices and methods implemented by such devices for performing an unbiased, objective fit assessment. A fit assessment in accordance with any of the embodiments disclosed herein can be implemented by the ear-worn electronic device without the assistance or presence of a trained specialist.
According to any of the embodiments disclosed herein, an ear-worn electronic device includes a temperature sensor arrangement configured to generate sensor signals in response to heat generated in a wearer's ear. The temperature sensor arrangement can include one, two, three, four or more temperature sensors configured to sense heat generated in the wearer's ear. A controller operably coupled to the temperature sensor arrangement is configured to assess a fit of the device using the sensor signals. The controller can be a component of the ear-worn electronic device, a controller of an external electronic device communicatively coupled to the ear-worn electronic device, or controllers of the ear-worn and external electronic devices operating cooperatively.
For example, a controller of the ear-worn electronic device can be configured to assess the fit of the device using sensor signals generated by the temperature sensor arrangement. In some implementations, a controller of an external device communicatively coupled to the ear-worn electronic device can be configured to assess a fit of the device using the sensor signals. The controller of the ear-worn electronic device and/or the external device can be configured to generate information about the fit of the device in response to the device fit assessment. Device fit information can be communicated to the wearer, such as by an audio output device of the ear-worn electronic device and/or a display/speaker of an external electronic device.
Evaluation of sensor signals generated by the temperature sensor arrangement can be used by a controller of the ear-worn electronic device and/or an external electronic device to determine whether the fit of the device is a proper fit or an improper fit. The outcome of this device fit evaluation can be communicated to the wearer. If an improper fit is detected, the wearer can adjust the fit of the device and the device fit assessment can be repeated.
Embodiments of the disclosure are defined in the Examples. However, below there is provided a non-exhaustive listing of non-limiting examples. Any one or more of the features of these examples may be combined with any one or more features of another example, embodiment, or aspect described herein.
Example Ex1. An ear-worn electronic device comprises a housing configured to fit at least partially in an ear of a wearer, a power source situated in the housing, and a temperature sensor arrangement situated in or on the housing and coupled to the power source. The temperature sensor arrangement is configured to generate sensor signals in response to heat generated in the wearer's ear and a controller, situated in the housing and coupled to the power source and the temperature sensor arrangement, is configured to assess a fit of the device using the sensor signals.
Example Ex2. An ear-worn electronic device comprises a housing configured to fit at least partially in an ear of a wearer, a power source situated in the housing, and a temperature sensor arrangement coupled to the power source and comprising at least two temperature sensors situated in or on the housing and spaced apart from one another. The temperature sensors are configured to generate sensor signals in response to heat generated in the wearer's ear and a controller, situated in the housing and coupled to the power source and the temperature sensor arrangement, is configured to assess a fit of the device using the sensor signals.
Example Ex3. The device according to Ex1 or Ex2, wherein the controller is configured to detect whether the fit of the device is a proper fit or an improper fit using the sensor signals.
Example Ex4. The device according to any one or any combination of the preceding Examples, wherein the controller is configured to generate a time-varying characterization of temperature within the wearer's ear using the sensor signals, assess the fit of the device using the temperature characterization.
Example Ex5. The device according to Ex2, wherein the controller is configured to generate a plurality of time-varying characterizations of temperature within the wearer's ear using sensor signals produced by each of the temperature sensors, measure differences between the temperature characterizations, and assess the fit of the device using the temperature characterization differences.
Example Ex6. The device according to any one or any combination of the preceding Examples, wherein the controller is configured to generate a temperature profile using the sensor signals, compare the temperature profile to a temperature profile pre-established for the device, and assess the fit of the device using a result of the comparison.
Example Ex7. The device according to any one or any combination of the preceding Examples, wherein the controller is configured to generate a temperature profile using the sensor signals, compare the temperature profile to a temperature profile pre-established for the device and for the wearer, and assess the fit of the device using a result of the comparison.
Example Ex8. The device according to Ex6 or Ex7, wherein the generated and pre-established temperature profiles comprise steady-state temperature profiles.
Example Ex9. The device according to Ex6 or Ex7, wherein the generated and pre-established temperature profiles comprise dynamic temperature profiles representative of warming of the device prior to achieving a steady state temperature.
Example Ex10. The device according to any one or any combination of Ex1 through Ex3, wherein the controller is configured to generate a temperature gradient using the sensor signals, compare the temperature gradient to a threshold, and assess the fit of the device using a result of the comparison.
Example Ex11. The device according to Ex2, wherein the controller is configured to generate a temperature gradient using sensor signals produced by two of the temperature sensors, compare the temperature gradient to a threshold, and assess the fit of the device using a result of the comparison.
Example Ex12. The device according to Ex2, wherein temperature sensor comprises three or more temperature sensors situated in or on the housing and spaced apart from one another, and the controller is configured to generate a plurality of temperature gradients using temperature signals produced by respective pairs or combinations of the three or more temperatures sensors, compare the temperature gradients to at least one threshold, and assess the fit of the device using a result of the comparison.
Example Ex13. The device according to any one or any combination of Ex10 through Ex12, wherein the threshold is a threshold pre-established for the device.
Example Ex14. The device according to any one or any combination of Ex10 through Ex12, wherein the threshold is a threshold pre-established for the device and the wearer.
Example Ex15. The device according to any one or any combination of the preceding Examples, wherein the housing is configured to provide a sealed fit with respect to the wearer's ear, and the controller is configured to assess the sealed fit of the device using the sensor signals.
Example Ex16. The device according to any one or any combination of Ex1 through Ex14, wherein the housing is configured to provide an unsealed fit with respect to the wearer's ear, and the controller is configured to assess the unsealed fit of the device using the sensor signals.
Example Ex17. The device according to any one or any combination of the preceding Examples, wherein the device is a restricted medical hearing device.
Example Ex18. The device according to any one or any combination of the preceding Examples, wherein the device is a hearing aid.
Example Ex19. The device according to any one or any combination of Ex1 through Ex16, wherein the device is an over-the-counter (OTC) hearing device.
Example Ex20. The device according to any one or any combination of Ex1 through Ex16, wherein the device is a consumer hearing device.
Example Ex21. The device according to any one or any combination of Ex1 through Ex16, wherein the device is a consumer sound amplifier.
Example Ex22. The device according to any one or any combination of Ex1 through Ex16, wherein the device is a consumer earbud.
Example Ex23. The device according to any one or any combination of the preceding Examples, wherein the device comprises an audio processing facility, and the controller is configured to produce an output indicative of the fit assessment and communicate the output to an ear drum of the wearer's ear via the audio processing facility.
Example Ex24. The device according to any one or any combination of the preceding Examples, wherein the device comprises a wireless communication device, and the controller is configured to produce a signal indicative of the fit assessment and cooperate with the wireless communication device to transmit the signal to an external device or system.
Example Ex25. The device according to any one or any combination of the preceding Examples, comprising detecting a trigger event by the controller and initiating device fit assessment by the controller in response to the trigger event.
Example Ex26. The device according to Ex25, wherein the trigger event comprises a change in temperature measured by the temperature sensor arrangement relative to a threshold.
Example Ex27. The device according to Ex25, wherein the trigger event comprises a rate of change in temperature measured by the temperature sensor arrangement relative to a threshold.
Example Ex28. The device according to Ex26 or Ex27, wherein the device comprises an auxiliary sensor configured to generate auxiliary sensor signals, and the trigger event is detected by the controller in response to the temperature sensor signals and the auxiliary sensor signals.
Example Ex29. The device according to Ex25, wherein detecting the trigger event comprises detecting an initiation signal by the controller.
Example Ex30. The device according to Ex29, wherein the initiation signal comprises a signal generated by a button of the device in response to a wearer input.
Example Ex31. The device according to Ex29, wherein the initiation signal comprises a signal received from an external communication device.
Example Ex32. A method implemented by an ear-worn electronic device configured for deployment in, on or about an ear of a wearer comprises generating sensor signals by a temperature sensor arrangement of the device in response to heat generated in the wearer's ear, receiving the sensor signals by a controller, assessing, by the controller, a fit of the device in the wearer's ear using the sensor signals, and generating, by the controller, an output indicative of the device fit assessment.
Example Ex33. The method of Ex32, wherein the controller is configured to implement any one or any combination of the processes recited in Ex1 through Ex16 and Ex23 through Ex31.
The term ear-worn electronic device (e.g., device 100) refers to a wide variety of electronic devices configured for deployment in, on or about an ear of a wearer. Representative ear-worn electronic devices of the present disclosure include, but are not limited to, in-the-canal (ITC), completely-in-the-canal (CIC), invisible-in-canal (IIC), in-the-ear (ITE), receiver-in-canal (RIC), behind-the-ear (BTE), and receiver-in-the-ear (RITE) type devices. Representative ear-worn electronic devices of the present disclosure include, but are not limited to, earbuds, electronic ear plugs, personal sound amplification devices, and other ear-worn electronic appliances. Ear-worn electronic devices of the present disclosure include various types of hearing devices, various types of physiologic monitoring and biometric devices, and combined hearing/physiologic monitoring devices. Ear-worn electronic devices of the present disclosure include restricted medical devices (e.g., devices regulated by the U.S. Food and Drug Administration), such as hearing aids. Ear-worn electronic devices of the present disclosure include consumer electronic devices, such as consumer earbuds, consumer sound amplifiers, and consumer hearing devices (e.g., consumer hearing aids and over-the-counter (OTC) hearing devices), for example.
The ear-worn electronic device 100 shown in
The housing 102 is configured to contain or support a number of components including a sensor facility 134 comprising at least one or more temperature sensors 134a. The sensor facility 134 can include or be coupled to signal processing circuitry 136 configured to process sensor signals prior to communication of the sensor signals to a controller 120 coupled to a memory 122. The memory 122 is configured to store fit assessment software 123, which includes program instructions executable by the controller 120. As will be described in greater detail hereinbelow, the controller 120 is configured to execute fit assessment program instructions 123 to assess the fit of the device 100 in, on or about the wearer's ear using the sensor signals produced by the sensor facility 134. In some embodiments, a predetermined temperature profile (e.g., a curve or equation), template, pattern or threshold 125 is stored in the memory 122 and used by the controller 120 as part of a device fit assessment procedure. A power source 144, such as a rechargeable battery (e.g., lithium-ion battery), is configured to provide power to various components of the device 100.
In accordance with any of the embodiments disclosed herein, and after deploying (e.g., inserting) the device 100 in the wearer's ear, the controller 120 is configured to implement a device fit assessment procedure. In some implementations, instructions for participating in the device fit assessment procedure can be communicated to the wearer, such as audibly if the device 100 is equipped with an audio output device and/or visually via a smartphone or other electronic device communicatively coupled to the ear-worn electronic device 100. During the device fit assessment procedure implemented by the controller 120, the sensor facility 134 actively senses temperature in the wearer's ear and generates sensor signals in response to heat generated in the wearer's ear. In some implementations, one or more auxiliary sensors of the sensor facility 134 (see, e.g., the sensors shown in
The controller 120 is configured to assess the fit of the device 100 using sensor signals received from the sensor facility 134. The controller 120 can be configured to detect whether the fit of the device 100 is a proper fit or an improper fit using the sensor signals. The controller 120 can generate an output indicative of the device fit assessment (e.g., an output indicating a good fit or a poor fit). For example, the output produced by the controller 120 can include an audible output and/or a tactile output. Although the device fit assessment procedure is implemented by the controller 120 during initial deployment of the device 100 in a wearer's ear, assessing the device fit can be performed at any time thereafter, such as when movement of the wearer's head or jaw is detected by the sensor facility 134 (e.g., by a motion sensor 134b during exercise or eating/chewing which can alter the device fit).
The sensor facility 134 includes one or more temperature sensors 134a, such as one or more thermistors. A suitable thermistor 134a is a glass encapsulated thermistor, which includes a chip (e.g., a negative temperature coefficient (NTC) chip) encapsulated within a bead of glass. Leads (e.g., dumet leads) are coupled to the chip and to circuitry within the temperature sensor 134a of the sensor facility 134 (e.g., signal processing circuitry 136). A suitable thermistor 134a is a surface mount device (SMD) thermistor, which can be used for temperature sensing alone or in combination with other types of thermistors or temperature sensors. Other temperature sensors 134a can be used in the sensor facility 134, including thermocouples, resistance temperature detectors (RTDs), digital thermistors, and other types of resistance temperature sensors. An ear-worn device 100 of the present disclosure can incorporate any one or any combination of these types of temperature sensors. For example, passive thermistors as small as 1.6 mm×0.8 mm×0.8 mm that only require one additional resistor can be used, which are particularly useful for incorporation in an ear-worn device 100.
As will be discussed hereinbelow, the temperature sensor-based device fit assessment embodiments disclosed herein need not require an absolute temperature measurement, such as body core temperature. Rather, a relative temperature measurement can be used as by temperature sensor-based device fit assessment embodiments of the present disclosure. Accordingly, relatively low-cost, reduced-precision temperature sensors (e.g., thermistors) can be incorporated in the sensor facility 134 of the ear-worn electronic device 100. Use of relatively low-cost, reduced-precision temperature sensors advantageously reduces the cost and complexity of an ear-worn electronic device configured to perform a temperature sensor-based device fit assessment (e.g., in particular an in-situ temperature sensor-based device fit assessment).
In an ear-worn device 100 that incorporates a thermistor, the leads or contacts of the thermistor are coupled to an analog-to-digital converter (ADC) and a processor (e.g., signal processing circuitry 136). Changes in thermistor resistance correspond to changes in temperature. Thermistor resistance can be converted to temperature by the processor using the well-known Steinhart-Hart equation (e.g., via a lookup table). The Steinhart-Hart equation is considered the best mathematical expression for the resistance-temperature relationship of NTC thermistors. The coefficients of the Steinhart-Hart equation vary with thermistor type and are typically provided by the manufacturer or readily derivable. A thermistor or other temperature sensor 134a can be mounted on, to or supported by the housing 102 of the ear-worn device 100 in a variety of ways. For example, a temperature sensor 134a can be mounted on an outer surface of the housing 102 and covered with a protective, thermally conductive outer layer. The temperature sensor 134a can be mounted within a wall of the housing 102 or within the interior of the housing 102. In such implementations, the temperature sensor 134a can be covered and/or surrounded with thermally conductive material to provide thermal coupling between the temperature sensor and the thermal environment at or outside of the housing 102. Representative examples of various temperature sensors 134a, mounting configurations, and signal processing techniques are disclosed in commonly owned, co-pending U.S. patent application Ser. No. 16/160,695 filed Oct. 15, 2018, which is incorporated herein by reference.
The sensor facility 134 can include auxiliary sensors in addition to one or more temperature sensors 134a. For example, and with reference to
In some implementations, the ear-worn electronic device 100 can be implemented as a physiologic (e.g., biometric) monitoring device. In such implementations, the sensor facility 134 of the device 100 can include one or more physiologic or biometric sensors 134e in addition to one or more temperature sensors 134a. The physiologic/biometric sensors 134e can include one or more of an EKG or ECG sensor, an SpO2 sensor, a blood pressure sensor, a respiration sensor, a glucose sensor, an EEG sensor, an EMG sensor, and an EOG sensor. Representative examples of such sensors are disclosed in US Pat. Pub. Nos. 2018/0014784 (Heeger et al.), 2013/0216434 (Ow-Wing), and 2010/0253505 (Chou), and in U.S. Pat. No. 9,445,768 (Alexander et al.) and U.S. Pat. No. 9,107,586 (Bao), each of which is incorporated herein by reference in its entirety. As will be discussed hereinbelow, the device 100 can include or exclude a hearing assistance or audio processing/output facility.
Signals generated by any one or any combination of the motion sensors 134b, optical sensors 134c, electrical sensors 134d, and physiologic sensors 134e can be used by the controller 120 together with one or more temperature sensors 134a to assess the fit of the device 100. For example, one or more auxiliary sensors 134b-134e may be used by the controller 120 to assess device fit in situations where temperature sensing alone may not provide sufficient information for providing a reliable device fit assessment. By way of example, an impedance, conductance, resistance, or electrodermal activity sensor can be used by the controller 120 when the ambient temperature is the same as or close to the wearer's internal ear temperature. Measurements of impedance, conductance, resistance, or electrodermal activity made by the controller 120 can be used to detect good or poor contact between the housing 102 and tissue of the wearer's ear in cases where temperature measurements alone may not provide reliable information for assessing device fit.
The communication device 130 can include a radiofrequency (RF) transceiver and antenna and/or a near field magnetic induction (NFMI) transceiver and antenna. For example, the communication device 130 can incorporate an antenna arrangement coupled to a high-frequency radio, such as a 2.4 GHz radio. The radio can conform to an IEEE 802.11 (e.g., WiFi®) or Bluetooth® (e.g., BLE, Bluetooth® 4. 2, 5.0, 5.1, 5.2 or later) specification, for example. Sensor signals generated by the sensor facility 134 can be communicated to the external electronic device 150 via the communication device 130.
The external electronic device 150 includes a communication device 166 configured to communicatively coupled to the communication device 130 of the ear-worn electronic device 100a. The external electronic device 150 includes a controller 160 coupled to memory 162 and a user interface 164. The user interface 164 can include a touch display and an audio processing facility (e.g., a speaker and optionally a microphone), for example. The memory 162 is configured to store fit assessment software 163, which includes program instructions executable by the controller 160. In some embodiments, a predetermined temperature profile, template, pattern or threshold 165 is stored in the memory 162 and used by the controller 160 as part of a device fit assessment procedure. The predetermined temperature profile, template, pattern or threshold 165 stored in the memory 162 can be obtained by the external electronic device 150 from a memory (e.g., ROM or EEPROM) of the ear-worn electronic device 100a or from a server of the device manufacturer or a technical specialist (e.g., audiologist). As described hereinabove, the controller 160 of the external electronic device 150 is configured to assess the fit of the device 100a in, on or about the wearer's ear using sensor signals produced by the sensor facility 134 of the ear-worn electronic device 100a. The controller 160 can generate an output indicative of the device fit assessment (e.g., an output indicating a good fit or a poor fit). The output produced by the controller 160 can include an audible output, a visual output, a tactile output, or combination of any of these outputs.
In various embodiments, the method shown in
The body 102a of the housing 102 is configured to contain or support a number of components including a sensor facility 134 comprising at least one or more temperature sensors 134a as previously described. The sensor facility 134 can include or be coupled to signal processing circuitry 136 configured to process sensor signals prior to communication of the sensor signals to a controller 120 coupled to a memory 122. The memory 122 is configured to store fit assessment software which includes program instructions executable by the controller 120. The controller 120 is configured to execute fit assessment program instructions 123 to assess the fit of the device 100 in the wearer's ear using the sensor signals produced by the sensor facility 134. A predetermined temperature profile, template, pattern or threshold 125 can be stored in the memory 122 and used by the controller 120 as part of a device fit assessment procedure in some embodiments. A power source 144, such as a rechargeable battery and charging circuitry, is configured to provide power to various components of the device 100b. One or more other components 127 (e.g., RF and/or NFMI transceiver) can be disposed in the body 102a and/or other portions of the housing 102 (e.g., shaft 102b), representative examples of which are shown in
The sensor facility 134 shown in
The cap 102c is designed to provide a cushion layer for the earbud 100b-1, and can include a one or more U- or bowl-shaped soft silicon layers with an interior layer or surface configured to snap or otherwise affix to the shaft. The exterior layer or surface of the cap 102c has a standard shape to fit in the ear canal of the vast majority of consumers. The cap 102c can also be formed from a soft or pliant material, such as a foam, memory foam or sponge material, and have a standard shape to fit in the ear canal of the vast majority of consumers. The fit of the cap 102c within the ear canal can be a sealed fit or a non-sealed (e.g., vented) fit. In accordance with embodiments that include an audio processing facility, the cap 102c includes a bore (not shown, but see
The body 102a of the housing 102 is configured to contain or support a number of components including a sensor facility comprising at least one or more temperature sensors as previously described with reference to
One, two, three, four or more temperature sensors 134a are situated on or in the housing 322. Three temperature sensors 134a are shown in
It is noted that Location 2 is a location of the ear canal 22 between the first and second bends 24, 26 that is close (e.g., nearest) to the superficial temporal artery branch of the external carotid artery. Location 2 is considered the warmest region in the ear canal 22 that is adjacent to areas reachable from the surface of an in-the-canal device. Location 2 is located on the ventral side of the ear canal 22 just past the first bend 24 and before the second bend 26. More particularly, Location 2 is interior to the tragus “flat” area, interior to the first bend 24, and exterior to the second bend 26 on the ventral side of the ear canal 22.
After deploying (e.g., inserting) the device 100b, 100c in the wearer's ear, the controller 120 is configured to implement a device fit assessment procedure. In some implementations, instructions for participating in the device fit assessment procedure can be communicated to the wearer, such as audibly if the device 100b, 100c is equipped with an audio output device and/or visually via a smartphone or other electronic device communicatively coupled to the ear-worn electronic device 100b, 100c. During the device fit assessment procedure implemented by the controller 120, the sensor facility 134 actively senses temperature in the wearer's ear and generates sensor signals in response to heat generated in the wearer's ear. In some implementations, one or more auxiliary sensors of the sensor facility 134 (see, e.g., the sensors shown in
In some embodiments, the profiles 702/704 and 802/804 are generated by a controller 120 of the ear-worn electronic device 100a-100f. In other embodiments, temperature sensor signals generated by a sensor facility 134 of an ear-worn electronic device 100a-100f are communicated to an external electronic device (e.g., a smartphone or tablet), and a controller of the external electronic device generates the profiles 702/704 and 802/804 using the received sensor signals. A controller 120 of the ear-worn electronic device 100a-100f or the controller of an external electronic device assesses the fit of the ear-worn device 100a-100f using the profiles 702/704 and 802/804. A result of the device fit assessment can be communicated to the wearer via an audio processing facility of the ear-worn electronic device 100a-100f and/or an audio and/or visual interface of the external electronic device.
In the following discussion directed to
In general, the profile of one or more temperature sensors indicative of a proper fit varies from one ear-worn electronic device design to another. For some device designs, a relatively small separation between temperature characterizations or profiles (e.g., temperature profiles 702/704) produced from signals generated by the two closely spaced temperature sensors can be indicative of a good fit. For other device designs, a relatively small separation between temperature profiles (e.g., temperature profiles 702/704) produced from signals generated by the two closely spaced temperature sensors can be indicative of a poor fit.
For some device designs, a relatively large separation between temperature profiles (e.g., temperature profiles 802/804) produced from signals generated by the two distantly spaced temperature sensors can be indicative of a good fit. For other device designs, a relatively large separation between temperature profiles (e.g., temperature profiles 802/804) produced from signals generated by the two distantly spaced temperature sensors can be indicative of a poor fit.
By way of example, a first device design can include two temperature sensors with a small separation therebetween. The controller 120 can identify a relatively small separation between temperature profiles (e.g., temperature profiles 702/704) produced from signals generated by the two closely spaced temperature sensors. The pattern of closely separated temperature profiles identified by the controller 120 for the first device design may be indicative of a good fit or a poor fit relative to predetermined temperature profile pattern developed for the first device design.
For example, the controller 120 can compare the pattern of closely separated temperature profiles 702, 704 shown in
By way of further example, a second device design can include two temperature sensors having a large spatial separation therebetween. The controller 120 can identify a relatively large separation between temperature profiles (e.g., temperature profiles 802/804) produced from signals generated by the two distantly spaced temperature sensors. The pattern of largely separated temperature profiles identified by the controller 120 for the second device design may be indicative of a good fit or a poor fit relative to a predetermined temperature profile pattern developed for the second device design.
For example, the controller 120 can compare the pattern of largely separated temperature profiles 802, 804 shown in
According to another illustrative example, the controller 120 can generate the temperature profiles 702/704 having a relatively small separation therebetween (e.g., due to the device design having two closely spaced temperature sensors). In addition to assessing the relative spacing between the two temperature profiles 702/704, the controller 120 can also determine whether or not both temperature profiles have reached a predetermined threshold (e.g., indicating that both temperature sensors are touching the skin surface and further in the ear canal). In this illustrative example, a good fit can be determined by the controller 120 based on the relative spatial separation between the temperature profiles 702/704 and a determination that both temperature profiles reached a predetermined threshold.
By way of further example, the magnitude of measured temperature as a function of time for curves 702 and 704 can be compared by the controller 120, and a temperature difference between the two curves 702, 704 as a function of time can be measured. Differences in the magnitude between the two curves 702, 704 as a function of time (e.g., magnitude differences at times t1, t2 . . . tn) can be compared to a threshold. The threshold is typically specific to a particular type of ear-worn electronic device (e.g., in-canal vs. earbud vs. ITE) and therefore typically differs across disparate types of ear-worn electronic devices. Generally, a typical threshold is a temperature difference of less than about 1.2° C. (e.g., any value from about 0.1° C. to about 1° C., such as from about 0.1° C. to about 0.8° C. or from about 0.1° C. to about 0.4° C.). For example, the threshold can be 0.1° C., 0.2° C., 0.3° C. or 0.4° C. for a RIC-type device or an earbud. For an in-canal type device (e.g., a custom device such as a CIC-type device), the threshold can be any value from about 0.2° C. to about 1.2° C., such as about 0.2° C. to about 0.8° C. or about 0.2° C. to about 0.6° C.
If the measured differences between curves 702 and 704 as a function of time are below the threshold, the controller 120 assesses the device fit as a good fit. For example, and with reference to
Referring now to
The controller 120 can be configured to assess the fit of an ear-worn electronic device 100b, 100c using a temperature gradient (e.g., temperature curve slope or rate of temperature change) generated by the controller 120 using sensor signals produced by the sensor facility 134. For example, the controller 120 can be configured to generate a temperature gradient using sensor signals produced by the sensor facility 134, compare the temperature gradient to a threshold, and assess the fit of the device 100b, 100c using a result of the comparison. In the case of two temperature sensors, the controller 120 is configured to generate a temperature gradient using sensor signals produced by the two temperature sensors, compare the temperature gradient to a threshold, and assess the fit of the device using a result of the comparison. In the case of three or more temperature sensors, the controller 120 is configured to generate a plurality of temperature gradients using the temperature signals produced by respective pairs or combinations of the or more temperature sensors, compare the temperature gradients to at least one threshold, and assess the fit of the device 100b, 100c using a result of the comparison. The threshold can be a pre-established slope or rate of temperature change threshold appropriate for the particular device 100b, 100c.
According to some implementations, a pre-established temperature profile can be determined for a particular device 100b, 100c (e.g., a device-specific profile). In other implementations, a pre-established temperature profile can be determined for a particular device 100b, 100c and a particular wearer of the device 100b, 100c (e.g., a device- and wearer-specific profile). The pre-established temperature profile can be generated by the device manufacturer and/or a technical specialist (e.g., an audiologist). The pre-established temperature profile can be adjusted over time to account for changes in device performance/components and/or wearer usage (typically performed by a technical specialist). In such implementations, the controller 120 is configured to generate a temperature profile using sensor signals generated by the sensor facility 134, compare the temperature profile to a temperature profile pre-established for the device or the device and the wearer, and assess the fit of the device 100b, 100c using a result of the comparison. The pre-established temperature profile can be a time-varying temperature profile (e.g., a temperature curve) or a temperature gradient developed for a particular device or a particular device and wearer.
As is shown in
Various aspects of one or more temperature characterizations or profiles can be evaluated the controller 120 or a controller of an external electronic device to assess the fit of a particular ear-worn electronic device in a wearer's ear. These aspects can include one or any combination of the shape or morphology of the temperature profile, the magnitude of the temperature profile, and the rate of change (e.g., a first or second time derivative) of the temperature profile.
Various aspects of a difference between two or more temperature profiles can be evaluated by the controller 120 or a controller of an external electronic device to assess the fit of a particular ear-worn electronic device in a wearer's ear. These aspects can include one or any combination of a difference in the shape or morphology of two or more temperature profiles, a difference in the magnitude of two or more temperature profiles, a difference in the rate of change (e.g., a first or second time derivative) of two or more temperature profiles, and spacing between two or more temperature profiles.
Any one or combination of these aspects can be compared against a predetermined threshold (or template) or a predetermined combination of thresholds (or templates). Various comparison measures can be implemented by the controller 120 or a controller of an external electronic device, in including one or more statistical measures (e.g., correlation, cross-correlation, standard deviation). For example one or more temperature profile patterns can be compared to one or more predetermined temperature profile patterns using a feature correlation-based measure (e.g., feature coefficient-based matching relative to a matching threshold such as >90% or >95%).
The receiver 364, 384 includes an enclosure configured for insertion into the ear canal and includes a distal end 365, 385 and a proximal end 367, 387. The distal end 365, 385 is configured to extend beyond the first bend, and typically terminates prior to the second bend. A distal temperature sensor 370, 390 is situated at a location of the receiver 364, 384 (e.g., a forward location) that can measure the temperature of ear canal tissue at a location biased towards the ear drum (e.g., a forward location, such as at or immediately adjacent Location 2 previously described). A proximal temperature sensor 372, 392 is situated at a location of the receiver 364, 384 proximal of the distal temperature sensor 370, 390 in an outer ear direction (e.g., a rearward location). For example, the proximal temperature sensor 372, 392 can be situated near the rear housing surface of the receiver 364, 384 proximate the cable 366, 386. The ear-worn devices 100d, 100e shown in
In some embodiments, the device 100f incorporates an audio processing facility 170. The audio processing facility 170 includes audio signal processing circuitry 176 coupled to a speaker or receiver 172. The audio processing facility 170 may also include one or more microphones 174 coupled to the audio signal processing circuitry 176. In other embodiments, the device 100f is devoid of the audio processing facility 170. The device 100f can also incorporate a communication facility 130 configured to effect communications with an external electronic device, system and/or the cloud. The communication facility 130 can include one or both of an RF transceiver/antenna and/or an NFMI transceiver/antenna.
According to embodiments that incorporate the audio processing facility 170, the device 100f can be implemented as a hearing assistance device that can aid a person with impaired hearing. For example, the device 100f can be implemented as a monaural hearing aid or a pair of devices 100f can be implemented as a binaural hearing aid system. The monaural device 100f or a pair of devices 100f can be configured to effect bi-directional communication (e.g., wireless communication) of data with an external source, such as a remote server via the Internet or other communication infrastructure. The device or devices 100f can be configured to receive streaming audio (e.g., digital audio data or files) from an electronic or digital source. Representative electronic/digital sources (e.g., accessory devices) include an assistive listening system, a streaming device (e.g., a TV streamer or audio streamer), a radio, a smartphone, a laptop, a cell phone/entertainment device (CPED) or other electronic device that serves as a source of digital audio data, control and/or settings data or commands, and/or other types of data files.
The device 100f can also include a user interface 180, which can include manually-actuatable buttons and/or switches (e.g., mechanical, capacitive, and/or optical switches). The user interface 180 may alternatively, or additionally, include a voice recognition interface configured to facilitate wearer control of the device 100f via voice commands. The voice recognition interface is preferably configured to discriminate between vocal sounds produced from the wearer of the device 100f (e.g., “own voice” recognition via an acoustic template developed for the wearer) and vocal sounds produced from other persons in the vicinity of the device 100f. The user interface 180 may alternatively, or additionally, include a gesture detection interface configured to facilitate wearer control of the device 100f via gestures (e.g., non-contacting hand and/or finger gestures made in proximity to the device 100f). Examples of gesture detection user interfaces and voice recognition user interfaces suitable for incorporation in device 100f are disclosed in U.S. Patent Application Nos. 62/875,139 filed Jul. 17, 2019 and entitled “Ear-Worn Electronic Device Incorporating Gesture Control System Using Frequency-Hopping Spread Spectrum Transmission” and 62/939,031 filed Nov. 22, 2019 and entitled “Ear-Worn Electronic Device Incorporating Gesture Control System Using Frequency-Hopping Spread Spectrum Transmission,” U.S. Pat. Nos. 8,165,329, 9,900,712, and 10,341,784, and U.S. Patent Publication Nos. 2010/0067722, 2011/0238419, and 2011/0261983, each of which is incorporated herein by reference in its entirety.
The controller 120 (and the controller 120 shown in other figures) can include one or more processors or other logic devices. For example, the controller 120 can be representative of any combination of one or more logic devices (e.g., multi-core processor, digital signal processor (DSP), microprocessor, programmable controller, general-purpose processor, special-purpose processor, hardware controller, software controller, a combined hardware and software device) and/or other digital logic circuitry (e.g., ASICs, FPGAs), and software/firmware configured to implement the functionality disclosed herein. The controller 120 can incorporate or be coupled to various analog components (e.g., analog front-end), ADC and DAC components, and Filters (e.g., FIR filter, Kalman filter). The memory 122 can include one or more types of memory, including ROM, RAM, SDRAM, NVRAM, EEPROM, and FLASH, for example. The controller 120 can be coupled to, or incorporate, the memory 122.
Although reference is made herein to the accompanying set of drawings that form part of this disclosure, one of at least ordinary skill in the art will appreciate that various adaptations and modifications of the embodiments described herein are within, or do not depart from, the scope of this disclosure. For example, aspects of the embodiments described herein may be combined in a variety of ways with each other. Therefore, it is to be understood that, within the scope of the appended claims, the claimed invention may be practiced other than as explicitly described herein.
All references and publications cited herein are expressly incorporated herein by reference in their entirety into this disclosure, except to the extent they may directly contradict this disclosure. Unless otherwise indicated, all numbers expressing feature sizes, amounts, and physical properties used in the specification and claims may be understood as being modified either by the term “exactly” or “about.” Accordingly, unless indicated to the contrary, the numerical parameters set forth in the foregoing specification and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by those skilled in the art utilizing the teachings disclosed herein or, for example, within typical ranges of experimental error.
The recitation of numerical ranges by endpoints includes all numbers subsumed within that range (e.g. 1 to 5 includes 1, 1.5, 2, 2.75, 3, 3.80, 4, and 5) and any range within that range. Herein, the terms “up to” or “no greater than” a number (e.g., up to 50) includes the number (e.g., 50), and the term “no less than” a number (e.g., no less than 5) includes the number (e.g., 5).
The terms “coupled” or “connected” refer to elements being attached to each other either directly (in direct contact with each other) or indirectly (having one or more elements between and attaching the two elements). Either term may be modified by “operatively” and “operably,” which may be used interchangeably, to describe that the coupling or connection is configured to allow the components to interact to carry out at least some functionality (for example, a radio chip may be operably coupled to an antenna element to provide a radio frequency electric signal for wireless communication).
Terms related to orientation, such as “top,” “bottom,” “side,” and “end,” are used to describe relative positions of components and are not meant to limit the orientation of the embodiments contemplated. For example, an embodiment described as having a “top” and “bottom” also encompasses embodiments thereof rotated in various directions unless the content clearly dictates otherwise.
Reference to “one embodiment,” “an embodiment,” “certain embodiments,” or “some embodiments,” etc., means that a particular feature, configuration, composition, or characteristic described in connection with the embodiment is included in at least one embodiment of the disclosure. Thus, the appearances of such phrases in various places throughout are not necessarily referring to the same embodiment of the disclosure.
Furthermore, the particular features, configurations, compositions, or characteristics may be combined in any suitable manner in one or more embodiments.
The words “preferred” and “preferably” refer to embodiments of the disclosure that may afford certain benefits, under certain circumstances. However, other embodiments may also be preferred, under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful and is not intended to exclude other embodiments from the scope of the disclosure.
As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” encompass embodiments having plural referents, unless the content clearly dictates otherwise. As used in this specification and the appended claims, the term “or” is generally employed in its sense including “and/or” unless the content clearly dictates otherwise.
As used herein, “have,” “having,” “include,” “including,” “comprise,” “comprising” or the like are used in their open-ended sense, and generally mean “including, but not limited to.” It will be understood that “consisting essentially of,” “consisting of,” and the like are subsumed in “comprising,” and the like. The term “and/or” means one or all of the listed elements or a combination of at least two of the listed elements.
The phrases “at least one of,” “comprises at least one of,” and “one or more of” followed by a list refers to any one of the items in the list and any combination of two or more items in the list.
This application claims the benefit of U.S. Provisional Application No. 63/084,125, filed Sep. 28, 2020, the entire content of each of which is hereby incorporated by reference.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/US2021/045485 | 8/11/2021 | WO |
| Number | Date | Country | |
|---|---|---|---|
| 63084125 | Sep 2020 | US |
