Patent Application
20090154741
This disclosure relates generally to hearing assistance devices, and more particularly to a system for customizing hearing assistance devices.
Hearing instruments are electronic devices that provide signal processing functions such as noise reduction, amplification, and tone control. In many hearing assistance devices these and other functions can be programmably varied to fit the requirements of individual users.
Hearing assistance devices, such as hearing aids, include devices for use in the ear, in the ear canal, completely in the canal, and behind the ear. Such devices have been developed to ameliorate the effects of hearing losses in individuals. Hearing deficiencies can range from deafness to hearing losses where the individual has impairment responding to different frequencies of sound or to being able to differentiate sounds occurring simultaneously. The hearing assistance device in its most elementary form usually provides for auditory correction through the amplification and filtering of sound provided in the environment with the intent that the individual hears better than without the amplification.
Current hearing assistance devices provide a wide range of processing types and settings that may require extended interaction with the wearer and their environment to fine-tune (or customize) the device for the wearer. For example, the setting of single-microphone noise reduction parameters comprises a tradeoff between the amount of noise reduction and the amount of speech distortion. Different users of this technology use individual preferences for these variables, and preferences may vary under various acoustic surroundings. To customize a device, the dispenser of the hearing assistance device will either spend a significant amount of time assisting the wearer with fine-tuning, or the wearer is given a portable device to fine-tune the hearing assistance device on their own. The first method is unsatisfactory in that the fine-tuning may not be appropriate for the actual environments the users are typically exposed to, and because the process may take more time than is practical. The second method is unsatisfactory because the portable device may be cumbersome and intrusive or difficult to use while the wearer is attempting to fine-tune the hearing assistance device. These methods are also unsatisfactory in that, if the data associated with the fine-tuning are to be used by the device manufacturer to improve technology and its delivery, the burden of communicating this data must be shouldered by the dispenser.
Improved systems for customizing hearing assistance devices are needed.
Disclosed herein, among other things, is a system for customizing a hearing assistance device for a wearer. According to various embodiments, data corresponding to the wearer's acoustic environment is logged using the hearing assistance device. In various embodiments, the hearing assistance device is fitted by an adaptive fitting process controlled by the wearer, the adaptive fitting process having access to the data logged by the hearing assistance device to customize settings of the hearing assistance device for the wearer. In an embodiment, data related to fitting the hearing assistance device is sent via a network connection to a location accessible by the wearer's audiologist and/or device manufacturer. The sent data is used to create an interactive database, and the database is used for fitting hearing assistance devices for one or more wearers, in various embodiments.
Disclosed herein, among other things is a method for customizing a hearing assistance device worn by a wearer at a location remote from a device dispenser. According to various embodiments, the method includes logging data in the wearer's typical sound environment using the hearing assistance device worn by the wearer. In various embodiments, the method includes establishing communications between the hearing assistance device and a computer at the wearer's location, the computer including a network connection. The method further includes, in various embodiments, fitting the hearing assistance device by a process executing at least in part on the computer that uses at least the logged data to customize the hearing assistance device by the wearer.
Disclosed herein, among other things, is a system for customizing a hearing assistance device worn by a wearer at a location remote from a device dispenser. According to various embodiments, the system includes means for logging data corresponding to the wearer's acoustic environment. The system further includes means for using an adaptive fitting procedure that uses the logged data to customize the hearing assistance device for the wearer. In an embodiment, the system includes means for providing a network connection to transmit data and means for storing transmitted data for use in customizing hearing assistance devices for one or more wearers.
This Summary is an overview of some of the teachings of the present application and not intended to be an exclusive or exhaustive treatment of the present subject matter. Further details about the present subject matter are found in the detailed description and appended claims. The scope of the present invention is defined by the appended claims and their legal equivalents.
The following detailed description of the present subject matter refers to subject matter in the accompanying drawings which show, by way of illustration, specific aspects and embodiments in which the present subject matter may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the present subject matter. References to “an”, “one”, or “various” embodiments in this disclosure are not necessarily to the same embodiment, and such references contemplate more than one embodiment. The following detailed description is demonstrative and not to be taken in a limiting sense. The scope of the present subject matter is defined by the appended claims, along with the full scope of legal equivalents to which such claims are entitled.
The present subject matter relates to a method for fine-tuning (or customizing, or fitting) a hearing assistance device in which a wearer is exposed to controlled conditions simulating their particular acoustic environments but not intruding on their going about their intended activities in these environments, and in which information concerning the customization and environments is made available transparently to the device manufacturer and dispenser.
In an embodiment, the wearer 110 initiates a customization session on the personal computer 120, and software on the computer reads data logged in the hearing assistance device and/or queries the wearer. Logged data includes data indicative of the wearer's particular acoustic environment, and can be logged using dedicated logging hardware or the hearing assistance device 105 itself. The availability of logged data provides a starting point for fitting and can reduce or focus the questions that the software asks the wearer. Logging data for use in hearing assistance device (including behind the ear, in the ear, completely in the ear, or implanted devices) programming refers to recording information in a hearing device and/or in a recording unit at least temporarily operationally connected to the hearing device. A point in time of the recording or a recording frequency as well as the information to be recorded, as data, parameters or adjustments of the hearing device are adjusted or programmable. Logged data includes the current acoustic surrounding together with other relevant information, such as time of recording. The parameters that are adjustable in a hearing device can be checked all together or selectively in real acoustic environments in order to optimally adjust the hearing assistance device. Because of the number of the parameters being adjustable, selective recording is used because there is limited memory space and available battery capacity in the hearing assistance device.
In various embodiments, the wearer can direct the system to record data representative of an issue experienced by the wearer. For instance, if the wearer detects a problem with listening in a certain environment, the wearer can take an action which will record certain information relating to that environment for later use in determining the cause or a solution. For example, when instructed by the wearer the device may record certain sound parameters. The device may also record actual sound. The device may record settings of the hearing assistance device. Other data may be recorded that may be useful for later analysis of the sound environment. The data can be stored on the device and later downloaded to a computer. It can also be sent to the computer as needed. The data can be used for better fitting of the device in certain special or problematic listening situations. In various embodiments, the wearer can signal an instruction to record upon depressing a pushbutton, use of a remote control, or some such other way to signal the device to record information specially. Such recordings can assist in making fine tunings to the hearing assistance device. In another embodiment, the hearing assistance device identifies noisy environments using environment classification processes and automatically logs data when the received signal fits some specified criteria. In various embodiments, the device can enter or exit special recording modes based on events or by using a recording timer to control the duration of special recordings.
The logged data and query responses are used to generate audio stimuli that will mimic the environments the wearer has experienced and under which the wearer has indicated they want optimization to occur. The software system leads the wearer through one or more presentations of audio stimuli, configuring the hearing assistance device in different ways and obtaining preference responses from the wearer in order to determine the optimal setting of the device 105 for the particular environment under test. In an embodiment, this is accomplished under the control of an optimization routine. In one embodiment the optimization routine includes a genetic algorithm. Other optimization routines are possible without departing from the scope of the present subject matter. The use of adaptive algorithms for fitting hearing assistance devices is discussed in the related reference which has been incorporated by reference herein. The wearer 110 can customize the device 105 under one or more environments, in various embodiments. Once customization of desired environments is completed, information such as data logging, configurations and response data is related to a network database 140 (such as an internet database) for use by the dispenser/audiologist 190 and/or device manufacturer 180. The connections between the network 130 and database 150 (connection 135), the database 140 and manufacturer 180 (connection 185), and the database 140 and dispenser 190 (connection 195), can be wired or wireless in various embodiments.
In various embodiments, the device to be fitted can be a single ear device or a binaural device. Various parameters can be adjusted during fitting and fine-tuning, including, but are not limited to: channel gain, band gain, threshold knee points, and volume control.
Also provided herein is a system for customizing a hearing assistance device worn by a wearer at a location remote from a device dispenser. According to various embodiments, the system includes means for logging data corresponding to the wearer's acoustic environment. The system further includes means for using an adaptive fitting procedure that uses the logged data to customize the hearing assistance device for the wearer. The customizing means can include a personal computer, such as a laptop or desktop. In an embodiment, the system includes means for providing an Internet connection to transmit data and means for storing transmitted data for use in customizing hearing assistance devices for one or more wearers.
According to various embodiments, the system further includes means for providing an Internet connection to transmit data. Transmitted data can include logged data and/or parameters derived from customizing the device. Data to provide this information is input to the computer through user input from the keyboard, from a computer readable medium such as a diskette or a compact disc, from a database not contained within the computer via wired or wireless connections, and/or from the hearing assistance device. The system also includes means for storing transmitted data for use in customizing hearing assistance devices for one or more wearers, in an embodiment. The means for storing can include an interactive database accessible by at least one of the device dispenser and a device manufacturer. The means for logging date can include the hearing assistance device itself, or a separate device for logging data.
In an embodiment, data related to fitting the hearing assistance device is sent via a network connection to a location accessible by the wearer's audiologist and/or device manufacturer. Sent data includes parameters derived from fitting the hearing assistance device and/or logged data, in various embodiments. The sent data is used to create an interactive database, and the database is used for fitting hearing assistance devices for one or more wearers, in various embodiments. In one embodiment, using an adaptive fitting procedure includes using a genetic algorithm. Other embodiments employing different optimization approaches are possible without departing from the scope of the present subject matter.
Logging data can include recording environmental data using the hearing assistance device. In various embodiments, logging data includes recording environmental data under the direction of the wearer. Allowing the wearer to control recording provides data to the customizing procedure regarding circumstances where the wearer's device needs modification. In an example, the wearer's device performs well most of the time but when the wearer enters a particular environment (such as a restaurant, for example) the device performance declines. In this instance, the wearer can hold a button down on the device or use a remote control, and the device may record information concerning a particular environment. In another embodiment, the hearing assistance device identifies noisy environments itself using environment classification and automatically logs data when the received signal fits some specified criteria. The wearer may also record instances when the device does not operate satisfactorily. In such environments, the device may mark recorded data to indicate an incident that the wearer's audiologist or other professional may review to attempt to determine whether the device operated properly, or whether it could be better fitted, for example. In one embodiment, recorded data is stored. Such data may include settings of the device and may include recorded sound, or combinations of both. In one embodiment statistics concerning the acoustic environment are stored. In one embodiment, new information not regularly acquired is stored. For example, the information may include parameters and statistics that are not regularly stored to better diagnose the operation of the device. In various embodiments, combinations of the data set forth herein are stored. It is understood that a variety of information may be stored without departing from the scope of the present subject matter.
According to various embodiments, logging data includes recording data relating to statistics descriptive of acoustic environments frequented by the wearer. Logging data can also include recording data relating to the wearer's reaction to acoustic environments frequented by the wearer. Recording data relating to the wearer's reaction to acoustic environments includes recording answers to questions posed to the wearer by the computer, in an embodiment. In another embodiment, recording data relating to the wearer's reaction to acoustic environments includes recording the wearer's responses to prerecorded stimuli. In various embodiments, the method includes connecting the device to a computer having a connection to a broadband network for healthcare. Another example of a network connection includes an Internet connection. The computer can be further programmed to save logged data and/or data indicative of the customized hearing assistance device settings in a database accessible via the network connection. In one embodiment, a genetic algorithm is performed to aid in fitting the hearing assistance device. Other fitting approaches may be used without departing from the scope of the present subject matter.
The present subject matter provides a convenient customization of a wearer's hearing assistance device in which a wearer is exposed to controlled conditions simulating their particular acoustic environments but not intruding on their going about their intended activities in these environments. A dispenser need not attempt to blindly replicate a wearer's normal environment at the dispenser's location. Since information concerning the customization and environments is made available transparently to the device dispenser, the dispenser can categorize individuals that have different sounds in their environment for future customizations. Data can be logged continuously throughout the course of the wearer's daily activities, contributing to a more robust customization. In various embodiments, adaptive fitting algorithms, such as genetic algorithms, provide for proper fitting. Genetic algorithms benefit from access to data from fittings of a population and can further fine-tune device parameters based on past fittings. Other fitting algorithms may be employed without departing from the scope of the present subject matter.
In the fitting process, it is understood that the wearer of the hearing aid may receive sounds for fitting from a variety of possible sources. In various embodiments the sounds are produced via a connection to a direct audio input to have the hearing assistance device generate the sounds. In various embodiments the connection includes, but is not limited to: a wireless connection to electronics providing signals to the direct audio input, a wired connection to the direct audio input, or combinations thereof. Thus, in this approach, the speaker/receiver in the hearing assistance device is the only physical source of sound for the fitting process. In various embodiments, the computer drives some speakers, generating sound which is received by one or more microphones of the hearing assistance device. Other connections are possible, including, but not limited to, wireless communications to a wireless interface connected to, or integral to, the hearing assistance device. Such embodiments include, but are not limited to, packetized communications and may involve streaming audio signals. Other connections are possible without departing from the scope of the present subject matter.
The present subject matter includes hearing assistance devices, including, but not limited to, cochlear implant type hearing devices, hearing aids, such as behind-the-ear (BTE), in-the-ear (ITE), in-the-canal (ITC), or completely-in-the-canal (CIC) type hearing aids. It is understood that behind-the-ear type hearing aids may include devices that reside substantially behind the ear or over the ear. Such devices may include hearing aids with receivers associated with the electronics portion of the behind-the-ear device, or hearing aids of the type having receivers in-the-canal. It is understood that other hearing assistance devices not expressly stated herein may fall within the scope of the present subject matter
It is understood one of skill in the art, upon reading and understanding the present application will appreciate that variations of order, information or connections are possible without departing from the present teachings.
Additionally, one of ordinary skill in the art will understand that, the systems shown and described herein can be implemented using software, hardware, and combinations of software and hardware. As such, the term “system” is intended to encompass software implementations, hardware implementations, and software and hardware implementations.
This application is intended to cover adaptations or variations of the present subject matter. It is to be understood that the above description is intended to be illustrative, and not restrictive. The scope of the present subject matter should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.
This application is related to the following commonly assigned U.S. patent application which is herein incorporated by reference in its entirety: “Hearing Aids and Methods and Apparatus for Audio Fitting Thereof,” Ser. No. 10/051,757, filed Jan. 16, 2002.
