The disclosure relates generally to tactile vibration drivers for use in audio systems. More specifically, disclosed embodiments relate to tactile vibration drivers configured to generate tactile vibrations that may be sensed by a person using an associated headphone of an audio system, to headphones including such tactile vibration drivers, and to methods of operating and using such tactile vibration drivers and headphones.
Conventional portable audio systems often include a headphone that is connected to a media player (e.g., by one or more wires or by wireless technology). Conventional headphones may include one or two ear cup assemblies, each including an audio driver (i.e., a speaker) configured to produce audible sound waves with a diaphragm. For example,
Referring to
Referring to
Ear cup assemblies of headphones may also include tactile vibration drivers that are configured to generate tactile vibrations within the ear cup assemblies that may be felt by the user. Headphones including such tactile vibration drivers are disclosed in, for example, U.S. Pat. No. 8,965,028, which issued Feb. 24, 2015, the contents of which are incorporated herein in their entirety by this reference.
In accordance with one embodiment described herein, a tactile vibration driver for use in a headphone comprises a support structure, at least one suspension member suspending at least one rigid member relative to the support structure, and a plurality of magnetic members attached to the at least one rigid member and configured to drive oscillating movement of the at least one rigid member and the at least one suspension member so as to produce tactile vibrations during operation of the tactile vibration driver.
In additional embodiments, an audio system including a media player configured to send an electrical audio signal to at least one tactile vibration driver of the audio system is described. The at least one tactile vibration driver comprises at least one rigid member, at least one suspension member coupled to the at least one rigid member and a support structure, and a plurality of magnetic members attached to the at least one rigid member, wherein each magnetic member of the plurality of magnetic members is configured to oscillate relative to the support structure and generate tactile vibrations responsive to receipt of the electrical audio signal.
In additional embodiments, a method of operating a tactile vibration driver comprises driving a plurality of magnetic members attached to a rigid member of the tactile vibration driver to cause oscillations of the plurality of magnetic members and the rigid member relative to a suspension member and producing tactile vibrations responsive to receipt of an electrical signal.
In the following description, reference is made to the accompanying drawings in which is shown, by way of illustration, specific embodiments of the present disclosure. The embodiments are intended to describe aspects of the disclosure in sufficient detail to enable those skilled in the art to practice the invention. Other embodiments may be utilized and changes may be made without departing from the scope of the disclosure.
Disclosed embodiments relate generally to tactile vibration drivers that are configured to generate tactile vibrations that may be felt by a person using the tactile vibration drivers or a headphone including one or more tactile vibration drivers. In particular, disclosed embodiments may include a headphone including one or more tactile vibration drivers configured to generate tactile vibrations responsive to receiving an electrical signal, such as an electrical audio signal. In some embodiments, the tactile vibration driver may be configured as a multi-actuator system to generate vibrations that may be physically felt in a tactile manner by the user. The tactile vibration driver may include multiple voice coil/magnet actuators that may be driven at the same operating frequency. By providing a plurality of actuators, the tactile vibration driver may be non-circular and/or non-planar in shape and may include a plurality of actuators disposed around a particular area where tactile vibrations are desired, as opposed to a single actuator centered in a generally circular and generally planar tactile vibration driver assembly. The actuators may be a Lorentz force actuator typically consisting of a coil of wire and a magnet. The actuators may include a magnetic member (e.g., a physical magnet) surrounded by one or more electrically conductive wire coils, and the tactile vibration driver may include a multi-actuator transducer in which multiple actuators are placed at different locations relative to a suspension member to create the tactile vibrations.
Such a tactile vibration driver with a plurality of actuators may be used in headphones configured to contact a user in asymmetric volumes and spaces where conventional speakers and headphones configured to generate tactile vibrations may not fit in a comfortable manner. The tactile vibrations may be applied to non-planar surfaces of a head or other anatomical features of a user because the tactile vibration driver includes a plurality of actuators rather than only a single actuator. For example, the tactile vibration drivers and/or headphones including the tactile vibration drivers may be configured to conform to a shape of a user's head (e.g., wrap around or behind a user's ear, contact a user's head distal from the ear), conform to a touch point of a user (e.g., hands or fingers of a user playing a gaming console), or fit within an ear cup. The tactile vibration driver may be located proximal to or remote from an audio driver associated with the headphone, providing a low profile assembly since the tactile vibration driver may not be stacked vertically over the audio driver.
As used herein, the term “audio driver” means and includes an acoustic transducer device configured primarily to generate audible sound waves, such as with the reproduction of speech, music, or other audible sound. An audio driver may be configured primarily to emit audible sound frequencies, although some minor tactile vibrations may be generated by an audio driver.
As used herein, the term “tactile vibration driver” means and includes a transducer device configured primarily to generate tactile vibrations that may be felt in a tactile manner by a user, although some low frequency audible sound may also be generated by a tactile vibration driver. While examples are described herein for tactile vibration drivers that are incorporated within headphones, tactile vibration drivers as described herein may be employed in other non-headphone devices.
As used herein, the term “magnetic member” means and includes an electrically conductive wire coil or a magnet (e.g., a permanent magnet) that is used to form a coil/magnet pair of a tactile vibration driver that is driven by electrical current passing through the coil to generate a magnetic field, which applies a magnetic force between the magnet and coil so as to generate back and forth relative movement therebetween. In some configurations of tactile vibration drivers as described herein, a coil may be coupled to a movable member (e.g., a diaphragm), while a magnet is coupled to a support structure (e.g., a basket or frame of the tactile vibration driver), while in other embodiments, a magnet may be coupled to the movable member and a coil is coupled to the support structure. A changing magnetic field caused by electrical current passing through the coil may cause physical, oscillating displacement of the magnetic members coupled to the movable member relative to the support structure. The rigid members may be sufficiently rigid such that the rigid members may support one or more magnetic members coupled thereto without substantially deforming.
As used herein, the term “bass frequency” means and includes any frequency within the range extending from approximately 16 Hz to approximately 512 Hz. For purposes of this disclosure, a “low bass frequency” refers to bass frequencies that may be felt in a tactile manner as well as heard. Such low bass frequencies may be within the range extending from approximately 16 Hz to approximately 200 Hz. A “lower midrange frequency” is generally considered to be within the range extending from 512 Hz to 2.6 kHz. An “upper midrange frequency” is generally considered to be within the range extending from 2.6 kHz to 5.2 kHz. A “high end frequency” is generally considered to be within the range extending from 5.2 kHz to 20 kHz.
The headphone 302 may comprise two ear cup assemblies 308 and a headband 310. The headband 310 may be configured to rest on a user's head, and to support the two ear cup assemblies 308 when in use. The headband 310 may also be configured to position the two ear cup assemblies 308 attached to the headband 310 proximate (e.g., on or over) a user's ears such that sound emitted from the ear cup assemblies 308 is heard by the user. In yet further embodiments, the headphone 302 may comprise earbud assemblies (which may or may not be carried on a headband 310), which may include earbud speakers that may be inserted into the ears of the user.
The media player 306 may include any device or system capable of producing an audio signal and connectable to a headphone to convert the audio signal to audible sound and tactile vibrations. For example, the media player 306 may include smart phones or other phones, gaming systems, DVD players or other video players, laptop computers, tablet computers, desktop computers, stereo systems, microphones, personal digital assistants (PDAs), eBook readers, and music players such as digital music players, portable CD players, portable cassette players, etc. Other types of media players are also contemplated. As shown in
The ear cup assemblies 308 may include an audio driver configured to convert the audio signal to audible sound and a tactile vibration driver configured to generate a tactile response (e.g., vibrations), as described in further detail hereinbelow.
The driver system 400 may include a controller 404 configured to receive an input audio signal 401 (e.g., from the media player 306 (
Referring still to
The tactile vibration driver 450 may include a plurality of rigid members 502, 504, and a plurality of suspension members 512, 514. The rigid members 502, 504 may exhibit a suitable stiffness so that the entire rigid member 502, 504 moves together when being displaced as opposed to different regions deforming non-uniformly.
A first rigid member 502 may be coupled to a support structure 520 via the first suspension member 512. The first rigid member 502 and the second rigid member 504 may be coupled together via the second suspension member 514. The rigid members 502, 504 may be configured for mounting a plurality of magnetic members 556 (i.e., magnets and/or coils) thereon. As shown in
The support structure 520 may further include a lower support member 560, a circumferentially extending rim 562, and a frame support member 544. A radially outer portion of the first suspension member 512 may be connected to the circumferentially extending rim 562, such as by adhesive, a fastener, a snap fit, etc. The tactile vibration driver 450 may further include additional magnetic members 558 (e.g., coils or magnets). The additional magnetic members 558 may be coupled to the lower support member 560 within a cavity between the lower support member 560 and the suspension members 512, 514 of the tactile vibration driver 450.
In some embodiments, the additional magnetic members 558 may comprise coils and the magnetic members 556 may comprise magnets. The coils (e.g., the additional magnetic members 558) may be configured to generate a magnetic field responsive to an electrical signal (e.g., second audio signal 405 (
The tactile vibration driver 450 may be oriented parallel with the plate 542 in some embodiments. In other words, the vibrations of the tactile vibration driver 450 may be at least substantially perpendicular, or at an acute angle to the plate 542. The vibrations caused from the displacement of the tactile vibration driver 450 may cause the plate 542 to vibrate. While vibrating, the plate 542 may produce pressure waves in the air cavity 580, which may enhance the certain frequencies that are approximately near the vibration frequencies produced by the operation of the tactile vibration driver 450. The pressure waves and other physical vibrations in the headphone 302 may be felt as tactile vibrations to the user, which may further enhance the user's listening experience. Some modifications to the headphone 302 may affect the feel of the tactile vibrations generated by at the bass frequencies. For example, the size of the air cavity 580 may affect the strength of the tactile vibrations. Forming apertures in the plate 542 may have a similar effect as increasing the size of the air cavity 580, as the effective size of the air cavity 580 would be increased so as to include some volume of space within the ear cup assembly behind the plate 542.
As discussed above,
The suspension member 612 is shown symbolically in
The tactile vibration driver 600 may also include a plurality of magnetic members 630 associated with the rigid member 602. The magnetic members 630 may be attached in fixed manner to the rigid member 602. In some embodiments, the magnetic members 630 are attached to an underside of the rigid member 602. Each of the magnetic members 630 may be driven with the same signal so that the same forces are applied to the rigid member 602 at different locations relative to rigid member 602 corresponding to the locations of the magnetic members 630. In some embodiments, magnetic members 630 coupled to the same rigid member (e.g., rigid member 602) may be driven with the same signal (e.g., the second audio signal 405 (
While
In operation, a magnetic field generated by current flowing through a wire coil may change responsive to the audio signal received by the tactile vibration driver 600. The changing magnetic field causes physical, oscillating displacement of the magnetic members 630 and rigid member 602 relative to the support structure 620, and corresponding vibrations in the suspension member 612 to which the magnetic members 630 and rigid member 602 are attached. Thus, the tactile vibration driver 600 may have multiple coil/magnet pairs that may be driven at the same frequency. The resulting vibrations may cause an increased tactile response (e.g., vibrations) that is experienced by the user.
The tactile vibration driver 600 may be configured as a multi-actuator tactile vibration driver 600 having two or more actuators, with each coil/magnet pair of the plurality defining an actuator. Providing the tactile vibration driver 600 with multiple actuators may provide vibrations on surfaces that are asymmetric, non-planar, or in confined spaces. Each actuator may vibrate in unison to create vibrations in the rigid member 602 associated with the actuators. The tactile vibration driver 600 may have any desired size and/or shape. For example, the tactile vibration driver 600 may be sized and shaped to fit within asymmetric volumes (e.g., an area behind an ear of a user), or on uneven surfaces, such as surfaces of a user's head, and the tactile vibrations may be generated by a plurality of actuators rather than a single actuator. In some embodiments, the tactile vibration driver 600 may be configured to fit within a relatively small volume of an ear cup.
The tactile vibration driver 800 may be semi-circular in shape and the rigid member 802 may exhibit a corresponding semi-circular shape. In some embodiments, the tactile vibration driver 800 may be sized and shaped to at least partially wrap around an ear of a user. As a result, the tactile vibration driver 800 may be configured to contact a user's head behind and/or above the user's ear.
The tactile vibration driver 900 may be triangular in shape and the rigid member 902 may have a corresponding triangular shape. In some embodiments, a magnetic member 930 may be located at each corner of the triangular shape of the rigid member 902, although the tactile vibration driver 900 may include any number of magnetic members 930. An opening 905 may be defined by inner surfaces of the rigid member 902. The opening 905 may be configured to receive an object or to allow an object to pass therethrough.
The tactile vibration driver 1000 and the rigid member 1002 may be serpentine-shaped and may include one or more semi-circular curves or portions. The magnetic members 1030 may be coupled to the rigid member 1002 at locations where a direction of an outer surface of the rigid member 1002 changes. The tactile vibration driver 1000 may be configured to at least partially conform to and contact a head of the user at a location outside the user's ear.
The tactile vibration drivers 600, 700, 800, 900, and 1000 of
The annular-shaped rigid member 1102 may be coupled to a central audio driver 1150 via one or more suspension members 1114. The audio driver 1150 may be a conventional audio driver 1150 and may include a magnetic member 1130B coupled to an annular-shaped rigid member 1140 of the audio driver 1150. Accordingly, a multi-actuator tactile vibration driver 1100 may be concentric with, and substantially surround, the audio driver 1150.
The tactile vibration driver 1200 and the rigid member 1202 may be oval-shaped. An opening 1205 of the tactile vibration driver 1200 may be defined by inner surfaces of the rigid member 1202. The tactile vibration driver 1200 may be configured to contact a user's head outside the ear of the user to deliver tactile vibrations to the user while an audio driver of an associated headphone is placed in or over the ear of the user. Although the tactile vibration driver 1200 is illustrated as oval or triangular, the tactile vibration driver 1200 may be configured as other shapes, such as circular, rectangular, square, trapezoidal, etc.
The tactile vibration drivers 600, 700, 800, 900, 1000, 1100, and 1200 of
The first rigid member 1302 may include a plurality of magnetic members 1330A coupled thereto. The first rigid member 1302 and the associated magnetic members 1330A may comprise a multi-actuator transducer. The second rigid member 1304 may include a single magnetic member 1330B coupled thereto and may comprise a transducer with a single actuator.
Although each of the rigid members 1302, 1304 may be driven by different magnetic members 1330A, 1330B, the rigid members 1302, 1304 may oscillate at substantially the same frequency or frequencies. However, in other embodiments, the first rigid member 1302 and the second rigid member 1304 may be independently driven by the controller 404 (
In some embodiments, the rigid members 1302, 1304 may be generally circular and concentrically arranged with respect to each other. As a result, the first rigid member 1302 (e.g., the outer rigid member) may be configured as an annular disk that has a greater radius than the second rigid member 1304 (e.g., the center rigid member). In such a configuration, the suspension members 1312, 1314 may be attached to the edges of the respective rigid members 1302, 1304 to extend in a lateral, radial direction such that the suspension members 1312, 1314 oscillate by bending up and down (into and out of the plane of
The first suspension member 1312 and the second suspension member 1314 are each shown symbolically in
The first rigid member 1402 may include a plurality of magnetic members 1430A. Each of the magnetic members 1430A of the first rigid member 1402 may be driven at the same frequency. The first rigid member 1402 and the associated magnetic members 1430A may comprise a multi-actuator transducer. The second rigid member 1404 may include a plurality of magnetic members 1430B and may comprise another multi-actuator transducer. Each of the magnetic members 1430B of the second rigid member 1404 may be driven at the same frequency. The third rigid member 1406 may include a single magnetic member 1430C and may comprise a transducer with a single actuator. Thus, the tactile vibration driver 1400 may include one or more multi-actuator transducers and may further include a single-actuator transducer. In some embodiments, each of the magnetic members 1430A, 1430B, 1430C may be driven at the same frequency. In other embodiments, the magnetic members 1430A, 1430B, 1430C may be independently driven by the controller 404 (
The suspension members 1512, 1514 and the rigid members 1502, 1504 may be integrally formed and may be configured as a single piece of material (e.g., stamped metal). The suspension members 1512, 1514 may be configured with flexible beams separated by apertures that enable the suspension members 1512, 1514 to be deformed and/or displaced relative to the resting plane during operation of the tactile vibration driver 1500. The rigid members 1502, 1504 may be solid regions that remain parallel to the resting plane while being displaced during operation of the tactile vibration driver 1500.
The suspension members 1612, 1614 may be formed from a flexible material (e.g., silicone speaker surround material) that enables the suspension members 1612, 1614 to be deformed and/or displaced relative to the resting plane during operation of the tactile vibration driver 1600. The rigid members 1602, 1604 may be formed from a more rigid material (e.g., a solid metal structure, a solid plastic structure, etc.) that remains parallel to the resting plane while being displaced during operation of the tactile vibration driver 1600.
In some embodiments, a tactile vibration driver may include a combination of suspension members that are formed with beams (e.g.,
The headphone 1750 may further include one or more tactile vibration drivers 1700. The tactile vibration driver 1700 may be similar to the tactile vibration drivers 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1500, and 1600 described above with reference to
A wiring system 1754 may be associated with the tactile vibration driver 1700. The wiring system 1754 may extend along the hangar 1725 and to the tactile vibration driver 1700. The wiring system 1754 may carry audio signals from a media player (e.g., media player 306 (
Thus, the headphone 1750 may include a tactile vibration driver 1700 in a housing separate from the earbuds 1770. Audible sound may be delivered to a user's ear via the earbuds 1770 and tactile vibrations may be delivered to a user via the tactile vibration driver 1700, which may be located in the housing 1760 remote from the earbuds 1770 and outside the ear. Accordingly, the earbud assemblies of the headphone 1750 may exhibit a relatively low profile since the audio driver and the tactile vibration driver 1700 are not stacked one over another within the same housing.
In some embodiments, one or more tactile vibration drivers may be coupled to a user-wearable accessory. Examples of user-wearable accessories may include helmets, hoods, a skull cap (sometimes referred to in the art as a tuque or a “beanie”), ski goggles, etc., as described in U.S. patent application Ser. No. 13/451,299, filed Apr. 19, 2012, published Jul. 11, 2013 as U.S. Patent Application Publication No. 2012/0177195, and titled “MODULAR AUDIO SYSTEMS AND RELATED ASSEMBLIES AND METHODS,” the disclosure of which is hereby incorporated herein by this reference in its entirety. A plurality of tactile vibration drivers may be attached to the user-wearable accessories, which may be configured to support one or more tactile vibration drivers.
An exemplary user-wearable accessory may include a helmet.
One or more tactile vibration drivers 2100 may be secured to the helmet 2150 and configured to provide tactile vibrations to a user. The tactile vibration drivers 2100 may be secured to front surfaces, rear surfaces, side surfaces, and top surfaces of the interior of the helmet 2150. The tactile vibration drivers 2100 may receive an audio signal from the wiring system 2104 or may receive the audio signals wirelessly, such as via a Bluetooth® wireless connection.
The helmet 2250 may include one or more tactile vibration drivers 2200 configured to provide tactile vibrations to a user. The tactile vibration drivers 2200 may be secured to front surfaces, top surfaces, back surfaces, and side surfaces along the interior of the helmet 2250. The tactile vibration drivers 2200 may receive an audio signal from the wiring system 2204 or may receive the audio signals wirelessly, such as via a BLUETOOTH® wireless connection.
Additional non-limiting embodiments are described below.
A tactile vibration driver for use in a headphone, comprising: a support structure; at least one suspension member suspending at least one rigid member relative to the support structure; and a plurality of magnetic members attached to the at least one rigid member and configured to drive oscillating movement of the at least one rigid member and the at least one suspension member so as to produce tactile vibrations during operation of the tactile vibration driver.
The tactile vibration driver of Embodiment 1, wherein each of the plurality of magnetic members is configured to be driven at the same frequency during operation of the tactile vibration driver.
The tactile vibration driver of Embodiment 1 or Embodiment 2, wherein at least one magnetic member of the plurality of magnetic members is attached to the at least one rigid member at a different plane than another magnetic member of the plurality of magnetic members.
The tactile vibration driver of any one of Embodiments 1 through 3, further comprising a housing for the tactile vibration driver that is separate and distinct from a housing of an audio driver of the headphone.
The tactile vibration driver of any one of Embodiments 1 through 4, further comprising a hangar attached to the tactile vibration driver, wherein the hangar is configured to position the tactile vibration driver proximate a head of a user.
The tactile vibration driver of Embodiment 5, further comprising an earbud coupled to the hangar.
The tactile vibration driver of any one of Embodiments 1 through 3, wherein the tactile vibration driver substantially surrounds an audio driver of the headphone.
The tactile vibration driver of any one of Embodiments 1 through 7, further comprising an opening defined by inner surfaces of the at least one rigid member.
The tactile vibration driver of any one of Embodiments 1 through 8, wherein the at least one rigid member is oval-shaped, circular-shaped, semicircular-shaped, triangular-shaped, serpentine-shaped, square-shaped, rectangular-shaped, or trapezoidal-shaped.
The tactile vibration driver of any one of Embodiments 1 through 8, further comprising at least another rigid member, at least another magnetic member attached to the at least another rigid member and configured to drive oscillating movement of the at least another rigid member.
The tactile vibration driver of Embodiment 10, wherein the at least one rigid member and the at least another rigid member are concentric with each other.
An audio system including a media player configured to send an electrical audio signal to at least one tactile vibration driver of the audio system, the at least one tactile vibration driver comprising: at least one rigid member; at least one suspension member coupled to the at least one rigid member and a support structure; and a plurality of magnetic members attached to the at least one rigid member, wherein each magnetic member of the plurality of magnetic members is configured to oscillate relative to the support structure and generate tactile vibrations responsive to receipt of the electrical audio signal.
The audio system of Embodiment 12, wherein the at least one tactile vibration driver is configured to contact a surface of a head of a user.
The audio system of Embodiment 12 or Embodiment 13, further comprising an earbud configured to fit within an ear of the user.
The audio system of Embodiment 12 or Embodiment 13, wherein the at least one tactile vibration driver is secured to a headband of a headphone.
The audio system of Embodiment 12 or Embodiment 13, wherein the at least one tactile vibration driver is disposed within an ear cup of a headphone.
The audio system of Embodiment 12 or Embodiment 13, further comprising a headphone including a headband, a plurality of tactile vibration drivers secured to the headband.
The audio system of any one of Embodiments 12 through 14, wherein the at least one tactile vibration driver is secured to a helmet.
The audio system of Embodiment 12 or Embodiment 13, wherein the tactile vibration driver is coupled to one of a hood, a skullcap, or ski goggles.
The audio system of any one of Embodiment 12 or Embodiment 13, further comprising an audio driver, the at least one tactile vibration driver substantially surrounding and concentric with the audio driver.
A method of operating a tactile vibration driver, the method comprising: driving a plurality of magnetic members attached to a rigid member of the tactile vibration driver to cause oscillations of the plurality of magnetic members and the rigid member relative to a suspension member and producing tactile vibrations responsive to receipt of an electrical signal.
The method of Embodiment 21, wherein driving a plurality of magnetic members comprises driving the plurality of magnetic members at a bass frequency.
The method of Embodiment 21 or Embodiment 22, further comprising attaching at least one magnetic member of the plurality of magnetic members on a different plane than another magnetic member of the plurality of magnetic members and driving each of the plurality of magnetic members at the same frequency.
The method of any one of Embodiments 21 through 23, further comprising disposing the tactile vibration driver in a housing separate and distinct from a housing of an audio driver associated with the tactile vibration driver.
While certain illustrative embodiments have been described in connection with the figures, those of ordinary skill in the art will recognize and appreciate that embodiments of the invention are not limited to those embodiments explicitly shown and described herein. Rather, many additions, deletions, and modifications to the embodiments described herein may be made without departing from the scope of embodiments of the invention as hereinafter claimed, including legal equivalents. In addition, features from one embodiment may be combined with features of another embodiment while still being encompassed within the scope of embodiments of the invention as contemplated by the inventors.
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