Abstract: A system for processing sound, the system including: (a) a processor, configured to process a first input signal that is detected by a first microphone at a detection moment, a second input signal that is detected by a second microphone at the detection moment, and a third input signal that is detected by a bone-conduction microphone at the detection moment, to generate a corrected signal that is responsive to the first, second, and third input signals; and (b) a communication interface, configured to provide the corrected signal to an external system.

Abstract: A custom in-ear headset. The headset includes a housing having a proximate housing portion and a distant housing portion. The distant housing portion is shaped and sized to fit inside an ear canal of a user. The headset includes a miniature speaker that is acoustically coupled to a sound outlet in the distant portion of the housing for conveying sound pressure to an ear canal of the user. The headset further includes any one or more of: (a) a microphone with a sound inlet in the proximate housing portion, (b) a bone conduction microphone arranged in the distant housing portion, or (c) a microphone with a sound inlet in the distant housing portion. The headset further includes at least one ridge projecting from and circumscribing the distant housing portion.

Abstract: Provided is a single sound transmission apparatus using human body communication. The single sound transmission apparatus includes a sound signal generator generating a sound signal of an audio frequency band, a high frequency signal generator generating a high frequency signal having a higher frequency than the audio frequency band, a signal combiner generating a combined signal by combining the sound signal with the high frequency signal, and a signal transmitter varying a phase difference between the combined signal outputted from the signal combiner and the high frequency signal outputted from the high frequency signal generator, and outputting the combined signal and the high frequency signal together to a human body, in order to leave only the sound signal through destructive interference of the high frequency signal of the combined signal, wherein the destructive interference is generated in an ear area of the human body.

Abstract: Various methods and apparatus for processing audio signals are disclosed herein. The assembly may be attached, adhered, or otherwise embedded into or upon a removable oral appliance to form a hearing aid assembly. Such an oral appliance may be a custom-made device which can enhance and/or optimize received audio signals for vibrational conduction to the user. Received audio signals may be processed to cancel acoustic echo such that undesired sounds received by one or more intra-buccal and/or extra-buccal microphones are eliminated or mitigated. Additionally, a multiband actuation system may be used where two or more transducers each deliver sounds within certain frequencies. Also, the assembly may also utilize the sensation of directionality via the conducted vibrations to emulate directional perception of audio signals received by the user. Another feature may include the ability to vibrationally conduct ancillary audio signals to the user along with primary audio signals.

Abstract: An intra-oral hearing appliance includes an actuator to provide bone conduction sound transmission; a transceiver coupled to the actuator to cause the actuator to generate sound; and a first chamber containing the actuator and the transceiver, said first chamber adapted to be coupled to one or more teeth.

Abstract: In a personal audio system (100), a remote controller (120) has a touch-sensitive area (122) and is worn in or by a human ear. A temporal pattern in the area (122), which is being touched, is detected and used for remotely controlling a device (110) for personal audio by means of a control signal (130). This prevents the hassle involved in finding, manipulating and operating a conventional remote control that is typically dangling somewhere along a wire.

Abstract: An intra-oral appliance for transmitting sound via bone conduction and optimized for comfort, safety, speech intelligibility, eating and drinking and extended wear by the user including an actuator to provide bone conduction sound transmission; a transceiver coupled to the actuator to cause the actuator to generate sound; and a first chamber containing the actuator and the transceiver, said first chamber adapted to be coupled to one or more teeth of the user.

Abstract: This acoustic headset (2) comprises: two lateral acoustic modules (4, 6) comprising a mechanical bone excitation transducer (20, 22) which is capable of transmitting the sound signal to the auditory nerve by bone conduction, a flexible upper curved member (8) and a rigid rear curved member (10) for connecting the acoustic modules (4, 6). Each acoustic module (4, 6) comprises: a plate (16, 18) for lateral abutment against the sides of the skull, an articulation (24, 26) between the abutment plate (16, 18) and the transducer (20, 22), a spring for return movement, in terms of rotation about the axis of articulation (24, 26), of the transducer (20, 22) relative to the plate (16, 18) towards a rest position.

Abstract: An earplug that includes a piezoelectric element that converts electrical signals into oscillations; and a deformable material of which at least one segment is insertable into an external auditory canal of a person to ensure an acoustic seal by deformation, the piezoelectric element being disposed inside the deformable material and in fixed contact therewith, the deformable material being able to transmit the oscillations at a periphery and ensure conduction of the oscillations through cartilage and soft tissue of the auditory canal.

Abstract: A human body sound transmission apparatus and method for minimizing a signal loss are disclosed. The human body sound transmission apparatus includes: an audio signal transmission unit modulating an audio signal desired to be transmitted, and transmitting the modulated audio signal to the vicinity of a user's ear through the human body (i.e., a user's body); and a carrier wave signal transmission unit transmitting a carrier wave signal for demodulating the modulated audio signal to the vicinity of the user's ear through the air.

Abstract: There are provided a human body sound transmission system and a method. The human body sound transmission system according to an aspect of the present invention directly or indirectly contacts a human body to apply coupled signals of high frequency sound signals with high frequency signals, which recover sound signals from the high frequency sound signals, to the human body and transmit the sound signals using the human body as a transmission medium, wherein a magnitude of the sound signals recovered around a human's ear is increased in proportion to the number of signals transmitted through the human body by transmitting the plurality of signals including the same sound signals through the human body.

Abstract: Various methods and apparatus for processing audio signals are disclosed herein. The assembly may be attached, adhered, or otherwise embedded into or upon a removable oral appliance to form a hearing aid assembly. Such an oral appliance may be a custom-made device which can enhance and/or optimize received audio signals for vibrational conduction to the user. Received audio signals may be processed to cancel acoustic echo such that undesired sounds received by one or more intra-buccal and/or extra-buccal microphones are eliminated or mitigated. Additionally, a multiband actuation system may be used where two or more transducers each deliver sounds within certain frequencies. Also, the assembly may also utilize the sensation of directionality via the conducted vibrations to emulate directional perception of audio signals received by the user. Another feature may include the ability to vibrationally conduct ancillary audio signals to the user along with primary audio signals.

Abstract: Various methods and apparatus for processing audio signals are disclosed herein. The assembly may be attached, adhered, or otherwise embedded into or upon a removable oral appliance to form a hearing aid assembly. Such an oral appliance may be a custom-made device which can enhance and/or optimize received audio signals for vibrational conduction to the user. Received audio signals may be processed to cancel acoustic echo such that undesired sounds received by one or more intra-buccal and/or extra-buccal microphones are eliminated or mitigated. Additionally, a multiband actuation system may be used where two or more transducers each deliver sounds within certain frequencies. Also, the assembly may also utilize the sensation of directionality via the conducted vibrations to emulate directional perception of audio signals received by the user. Another feature may include the ability to vibrationally conduct ancillary audio signals to the user along with primary audio signals.

Abstract: To provide a bone conduction speaker that enables a wearer to hear a bone-conducted sound and an air-conducted sound caused by the bone-conducted sound to improve the quality and depth of the sound and allows the wearer to hear external sounds to improve the safety in outdoor use, and a hearing device using the same. When a bone conduction speaker is fitted in an auricle, a part 4, 5 or 6 of a main body 1 of the bone conduction speaker abuts against the entrance and/or the periphery of the entrance of the external auditory meatus to conduct a vibration of the entrance and/or the periphery of the entrance of the external auditory meatus, and a sound pressure caused by the vibration of the entrance and/or the periphery of the entrance of the external auditory meatus conducted by the abutting part is transmitted to the tympanic membrane through the external auditory meatus.

Abstract: Various methods and apparatus for processing audio signals are disclosed herein. The assembly may be attached, adhered, or otherwise embedded into or upon a removable oral appliance to form a hearing aid assembly. Such an oral appliance may be a custom-made device which can enhance and/or optimize received audio signals for vibrational conduction to the user. Received audio signals may be processed to cancel acoustic echo such that undesired sounds received by one or more intra-buccal and/or extra-buccal microphones are eliminated or mitigated. Additionally, a multiband actuation system may be used where two or more transducers each deliver sounds within certain frequencies. Also, the assembly may also utilize the sensation of directionality via the conducted vibrations to emulate directional perception of audio signals received by the user. Another feature may include the ability to vibrationally conduct ancillary audio signals to the user along with primary audio signals.

Abstract: A bone conduction speaker having a vibration prevention structure is disclosed. In the speaker structure that a magnet and a voice coil are installed in the interior of a housing disposed in an inner side of an external casing of a bone conduction speaker and are engaged with a yoke, and a diaphragm is installed in an outer side of the yoke, there is provided a bone conduction speaker having a vibration prevention structure which comprises one or at least two ribs which are formed as an outer side of the diaphragm is outwardly extended; and an engaging part which is disposed in an end of each rib and is fixedly assembled to the casing.

Abstract: Methods and apparatus for transmitting vibrations via an electronic and/or transducer assembly through a tooth or teeth are disclosed herein. The assembly may be attached, adhered, or otherwise embedded into or upon a removable oral appliance to form a hearing aid assembly. Such an oral appliance may be a custom-made device. The electronic and transducer assembly may receive incoming sounds either directly or through a receiver to process and amplify the signals and transmit the processed sounds via a vibrating transducer element coupled to a tooth or other bone structure, such as the maxillary, mandibular, or palatine bone structure.

Abstract: Various methods and apparatus for processing audio signals are disclosed herein. The assembly may be attached, adhered, or otherwise embedded into or upon a removable oral appliance to form a hearing aid assembly. Such an oral appliance may be a custom-made device which can enhance and/or optimize received audio signals for vibrational conduction to the user. Received audio signals may be processed to cancel acoustic echo such that undesired sounds received by one or more intra-buccal and/or extra-buccal microphones are eliminated or mitigated. Additionally, a multiband actuation system may be used where two or more transducers each deliver sounds within certain frequencies. Also, the assembly may also utilize the sensation of directionality via the conducted vibrations to emulate directional perception of audio signals received by the user. Another feature may include the ability to vibrationally conduct ancillary audio signals to the user along with primary audio signals.

Abstract: A digital audio player device can be attached, adhered, or otherwise embedded into or upon a removable oral appliance or other oral device to form an intraoral MP3 player. In another embodiment, the device provides an electronic and transducer device that can be attached, adhered, or otherwise embedded into or upon a removable oral appliance or other oral device to form a DAP. Such an oral appliance may be a custom-made device fabricated from a thermal forming process utilizing a replicate model of a dental structure obtained by conventional dental impression methods. The electronic and transducer assembly may receive incoming sounds either directly or through a receiver to process and amplify the signals and transmit the processed sounds via a vibrating transducer element coupled to a tooth or other bone structure, such as the maxillary, mandibular, or palatine bone structure.

Abstract: An integrated, switchable receiver module configured for acoustic transmission in an electronic device having an outer surface is provided. The integrated, switchable receiver includes an audio receiver (AR) and a bone conductive receiver (BCR), which is disposed in a spatially overlapping relationship with respect to the AR when viewed from outside the outer surface. The integrated, switchable receiver further includes a retractable mechanism configured at least to switch the integrated, switchable receiver module between (a) a BCR mode in which the BCR is presented in a pop-up position with respect to the outer surface, wherein the BCR is activated in the BCR mode while the AR mode is de-activated, and (b) an AR mode in which the BCR is presented in a retracted position with respect to the outer surface relative to the pop-up position, the AR is activated in the AR mode while the BCR is de-activated.

Abstract: A hearing-aid device and a method for transmitting sound through bone conduction are disclosed. The hearing-aid device comprises a piezoelectric-type actuator, housing and connector. The piezoelectric actuator is preferably a circular flextensional-type actuator mounted along its peripheral edge in a specifically designed circular structure of the housing. During operation, the bone-conduction transducer is placed against the mastoid area behind the ear of the patient. When the device is energized with an alternating electrical voltage, it flexes back and forth like a circular membrane sustained along its periphery and thus, vibrates as a consequence of the inverse piezoelectric effect. Due to the specific and unique designs proposed, these vibrations are directly transferred through the human skin to the bone structure (the skull) and provide a means for the sound to be transmitted for patients with hearing malfunctions.

Abstract: Transducer substantially comprising a hollow housing, a device located inside the hollow housing to transform the electrical signals output by a vibration pickup microphone, a generally discoid shaped element for acoustical coupling with the mastoid bone, having one face directed to the outside of the housing and one face arranged onto the inside of the housing itself, and a coupling element for connection between the vibrating unit and the acoustic coupling element. The acoustic coupling element comprises one soft material headset apt to close and seal one opening made on one face of the hollow housing, and to hold the vibrating element freely hanging into said housing, by means of the coupling element.

Abstract: To provide a data communication device capable of performing a stable human body communication by bringing the human body into contact with electrodes or proximities thereof without requiring user's attention when the data communication device held by the user is in the process of the human body communication. A transceiver electrode 103 and a reference electrode 104 are formed on concave portions 102 formed at positions where the user's fingers can be naturally brought into contact with the concave portions 102 when a data communication device 10 is held by one of the user's hands, such that the surfaces of the electrodes have a height slightly lower than those of the lateral portions of the housing 101. The transceiver electrode 103 and the reference electrode 104 are electrically connected, via a lead line 106, to a data communication unit 105 accommodated in the housing 101 and having a function of transmitting and receiving data.

Abstract: Disclosed is a small-sized sound receiver for producing body-sensible vibration, and more particularly to a small-sized sound receiver for producing body-sensible vibration, which has a structure for bone-conduction so that the receiver can implement not only a function of a common small-sized sound receiver but also sensing of various sounds and various body-sensible vibrations, such as body-sensible vibration and bone-conduction sound, or the like.

Abstract: A bone conduction assembly can include at least a microphone, an assembly stem, an ear cushion, and a microphone channel. The microphone can include an acoustic-to-electric transducer. The assembly stem can house the microphone and can be shaped for insertion into an ear canal of a user. The ear cushion can have an inner surface surrounding an outer surface of the assembly stem and an outer, contiguous, annular surface configured to maintain contact with an ear canal of a user when worn. The microphone channel can be shaped to channel vibrations resulting from bone conduction from the ear canal through the assembly stem to the microphone. In one embodiment, the bone conduction assembly can include a speaker having a speaker channel that is acoustically isolated from the microphone channel.

Abstract: A method of using an audio device (2) for improving a user's (1) listening experience. The audio device has a transducer (12) for producing output sound and the method comprises the steps of driving the transducer to produce an output sound and placing the audio device against the body of the user so that the user experiences a physical response to the sound while simultaneously listening to the audio device. The audio device may be arranged to produce a resonance in a part of the user's body. Preferably the audio device is positioned on the user's chest to produce a resonance in the chest cavity of the user's body. The audio device may comprise a sum and difference speaker system.

Abstract: Various methods and apparatus for processing audio signals are disclosed herein. The assembly may be attached, adhered, or otherwise embedded into or upon a removable oral appliance to form a hearing aid assembly. Such an oral appliance may be a custom-made device which can enhance and/or optimize received audio signals for vibrational conduction to the user. Received audio signals may be processed to cancel acoustic echo such that undesired sounds received by one or more intra-buccal and/or extra-buccal microphones are eliminated or mitigated. Additionally, a multiband actuation system may be used where two or more transducers each deliver sounds within certain frequencies. Also, the assembly may also utilize the sensation of directionality via the conducted vibrations to emulate directional perception of audio signals received by the user. Another feature may include the ability to vibrationally conduct ancillary audio signals to the user along with primary audio signals.

Abstract: A system for welding communication that includes a welding headgear and a bone conduction transducer (BCT) disposed in or on the welding headgear is provided. The BCT facilitates communication of signals to a welding operator via bone conduction. The bone conduction facilitates the transmission of sound directly to an inner ear of the welding operator.

Abstract: A microphone is installed on a surface of the skin immediately below the mastoid of a human to implement a sound sampling method including sampling at least one of a non-audible murmur, a whisper, or an audible sound. The microphone includes a condenser microphone portion having a pair of diaphragm electrodes and a contact portion which has an acoustic impedance close to the acoustic impedance of soft tissues in a body of a speaker, which is stuck tightly to the condenser microphone portion with no intervening air space, and which conducts an input speech from a skin surface of the speaker to the condenser microphone.

Abstract: Actuator systems for oral-based appliances utilizing transducers which are attached, adhered, or otherwise embedded into or upon a dental or oral appliance to form a hearing aid assembly. Such oral appliances may be a custom-made device which receives incoming sounds and transmits the processed sounds via a vibrating transducer element. The transducer element may utilize electromagnetic or piezoelectric transducer mechanisms and may be positioned directly along the dentition or along an oral appliance housing in various configurations.

Abstract: There is provided a dynamic sound transducer having a diaphragm system (10) which has at least a first and second metallized surface (11) which are separated from each other by an insulating surface (12). The dynamic sound transducer further has a moving coil (20) with a coil wire (25). An end of the coil wire is electrically conductingly connected to the first metallized surface (11) and the other end of the coil wire is electrically conductingly connected to the second metallized surface (11).

Abstract: A bone-conduction microphone built-in headset comprises: an ear pad; an ear cup capable of covering an ear; a piezoelectric element composing a bone-conduction microphone; a buffer material forming the ear pad; a baffle board provided between the ear pad and the ear cup; a wire laid from the piezoelectric element, in which the ear pad is provided on an opening end side of the ear cup, the piezoelectric element is provided inside the ear pad and supported by the buffer material to be pressed against a skin around the ear, the ear pad is detachably attached to the baffle board, and the baffle board has a connecter to which the wire is connected.

Abstract: Actuator systems for oral-based appliances utilizing transducers which are attached, adhered, or otherwise embedded into or upon a dental or oral appliance to form a hearing aid assembly. Such oral appliances may be a custom-made device which receives incoming sounds and transmits the processed sounds via a vibrating transducer element. The transducer element may utilize electromagnetic or piezoelectric transducer mechanisms and may be positioned directly along the dentition or along an oral appliance housing in various configurations.

Abstract: Provided are a human body sound transmission system and a method using single sound source. The human body sound transmission system includes a first transmission block for transmitting a combined signal of a first high frequency signal and a sound signal through a human body; and a second transmission block for transmitting a second high frequency signal having the same frequency as the first high frequency signal through the human body, to thereby recover the sound signal by destructing interference in a ear region of a user.

Abstract: [Problem to be Solved] To provide a high-sensitive compact vibration pickup microphone, suitably used as a talking microphone in high ambient noise environments or as a speech recognition input microphone, with high microphone sensitivity, resistance to sliding noise, and insensitivity to external noise and vibration.

Abstract: A communication apparatus includes a bone conduction communication apparatus with a housing having a shape which is conformable to at least a portion of at least one tooth of a user; a transceiver mounted in the housing; and a transducer disposed within or upon the housing and in vibratory communication with a surface of the at least one tooth to transmit sound through the at least one tooth. A positioning system is provided to transmit positional information to the transceiver to be delivered to the transducer; and a communication device links the transceiver with a second person. The electronic and transducer assembly may receive incoming sounds either directly or through a receiver to process and amplify the signals and transmit the processed sounds via a vibrating transducer element coupled to a tooth or other bone structure, such as the maxillary, mandibular, or palatine bone structure.

Abstract: A communication apparatus includes a bone conduction communication apparatus with a housing having a shape which is conformable to at least a portion of at least one tooth of a user; a transceiver mounted in the housing; and a transducer disposed within or upon the housing and in vibratory communication with a surface of the at least one tooth to transmit sound through the at least one tooth. A positioning system is provided to transmit navigational instructions to the transceiver to be delivered to the transducer; and a long range secure communication radio links the transceiver with a remote person. The electronic and transducer assembly may receive incoming sounds either directly or through a receiver to process and amplify the signals and transmit the processed sounds via a vibrating transducer element coupled to a tooth or other bone structure, such as the maxillary, mandibular, or palatine bone structure.

Abstract: A vibration speaker with facial plate has developed for delivering sound in a form of vibrational movement to a user's skin. The vibration speaker includes a voice coil to generate a magnetic force in response to application of a sound signal from an exterior, a magnet having a predetermined magnetic force to interact with the magnetic force from the voice coil, a basket to receive the magnet, a face plate to deliver upward and downward movement of the voice coil or the magnet to the user's skin, and a rear cover coupled to the face plate to constitute an appearance of the vibration speaker. The face plate is provided with a plate-shaped tensioner providing a predetermined tension for maintaining the face plate in a horizontal state to control upward and downward vibrational movement delivered from the vibration speaker.

Abstract: Methods and apparatus for transmitting vibrations via an electronic and/or transducer assembly through a tooth or teeth are disclosed herein. The assembly may include a bracket which is adhered or affixed onto the tooth or teeth and an electronics and/or transducer assembly which may be removably coupled to the bracket. The electronic and/or transducer assembly may receive incoming sounds either directly or through a receiver to process and amplify the signals and transmit the processed sounds via a vibrating transducer element coupled to the bracket for transmission into the underlying tooth or other bone structure.

Abstract: Systems and methods are disclosed for capturing sound for communication by mounting one or more intra-oral microphones to capture sound; and mounting a mouth wearable communicator in the oral cavity to communicate sound with a remote unit.

Abstract: [Problems] To convert a signal of non-audible murmur obtained through an in-vivo conduction microphone into a signal of a speech that is recognizable for (hardly misrecognized by) a receiving person with maximum accuracy.

Abstract: A system and method for providing a translated or calibrated signal to a bone conduction transducer. The frequency of an audiometer output signal is detected and attenuation and amplification calibration values may be determined from a lookup table as a function of this frequency. Characteristics of the output signal may then be varied as a function of the calibration values to provide a translated or calibrated signal. This signal may then be provided to an exemplary bone conduction transducer such as a piezoelectric, electrostrictive or other electroactive bone conduction transducer.

Abstract: The invention relates to a noise damping headset comprising at least one microphone and at least one ear phone intended to be connected via electrical conduits, preferably wires, to a transmitter and a receiver, preferably a mobile telephone, a communication radio or the like for communication between persons. The microphone consists of throat microphone for direct or indirect contact against the skin around a throat, the equipment mainly being sound tightening for sounds, coming from outside, from emerging into the throat microphone and the ear phone comprises a funnel-shape for inserting the same into the auditory canal of a person's ear, the outer limiting surfaces of the funnel-shape being sound tightening against the walls of the auditory canal, the sound coming from outside being prevented from emerging into the auditory canal, whereby a communication between said persons can be held without being disturbed in a greater extent of the sound coming from outside.

Abstract: The object is to provide a bone-conduction handset, which has its main body (1) sufficiently isolated from a bone-conduction speaker unit (3) so that: the chances that howling and sound leaking may occur are reduced; and, the handset is improved in easiness in use. In the handset, the speaker unit (3) is mounted on the main body (1) through a speaker mounting member (2) made of a vibration-proof material. The mounting member (2) is characterized by comprising a connection portion (6), which is disposed perpendicularly to both the handset body (1) and the speaker unit (3) in a manner such that the main body (1) and the speaker unit (3) have their opposed inner surfaces disposed adjacent to opposite sides of the connection portion (6), whereby the main body (1) is isolated from the speaker unit (3).

Abstract: A wearable surround sound system, that includes: (a) a processor, adapted to receive input signals representative of requested audio signals to be heard by the user and in response to generate multiple output signals; and (b) multiple bone conduction speakers, coupled to the processor, adapted to convey the multiple output signals to at least one bone of a user; wherein the bone conduction speakers are arrayed so as to stimulate an encompassing sound perception of the use. A wearable ambient sound reduction system, that includes: (a) a microphone, adapted to detect an ambient sound signal; (b) a processor adapted to generate an output signal in response to the ambient sound signal; wherein the output signal, when conveyed to a bone of the user, reduces an affect that an ambient sound signal has upon the user; wherein the microphone is coupled to the processor; and (c) a bone conduction speaker, coupled to the processor, adapted to convey the output signal to a bone of a user.

Abstract: A bone conduction earphone in which a large magnetic force can be generated and which can achieve improvement of sound quality and reduction of power consumption is provided. A vibration part 3 is provided to include a first magnet 32 and a second magnet 34, which coaxially secure a voice coil 2 on an inner surface 12a of an upper wall 12 of a cylinder-shaped frame 10 having an open lower part and are located in an inner side region and an outer side region of the voice coil 2, and a diaphragm 36 which connects the first magnet 32 and the second magnet 34 to the frame 10. A vibration transmission cushion 5 is provided to a lower part of the frame 10 in order to transmit a vibration of the voice coil 2 and the vibration part 3 to a human body.

Abstract: A unique communication management device allows the user to control his/her sound environment both in and outside the ear. The device overcomes previous shortcomings encountered by emergency first responders, military, SWAT, firefighters, police, sports enthusiasts, musicians, as well as other users, with respect to single application headsets by utilizing a combination of an ambient noise microphone, volume control, compression circuit, and audio transducer. In an embodiment of the invention, the device also includes independent left and right on/off switches and one or more bone conduction microphones.

Abstract: A bone conductive speaker in which the hearing of external sounds is not inhibited because the earhole is not closed, the hearing efficiency is high and the sound leakage is small because the tragus portion is vibrated locally, and moreover the configuration is simple and the putting-on and taking-off operations are easy to perform. The bone conductive speaker comprises a bone conductive speaker body (1) and holding means (2) which is attached to the bone conductive speaker body (1) to hold the bone conductive speaker body (1) so that the bone conductive speaker body (1) is brought into contact with the tragus (31) or a portion in the vicinity thereof. The holding means (2) is of a ring shape having a size accommodated in the concha cavity (30), and both outside face parts thereof come into contact with the inside portion of the tragus (31) and the inside surface of the concha cavity (30) to continuously push them, by which the holding means (2) is locked at that position.

Abstract: The present invention relates to a multi-functional subminiature speaker, more particularly, to a bone conduction speaker, which can generate vibration for bone conduction, bodily sensation of vibration, speaker attachment, and the vibration mode over the housing unit, that is, over a front protector of the speaker, a housing, and an outer side of a rear cover, without any projections, and which has an acoustic portion unit further detachably mounted.

Abstract: Methods and apparatus for transmitting vibrations via an electronic and/or transducer assembly through a dental patch are disclosed herein. The patch assembly may be attached, adhered, or otherwise embedded intra-orally on a tooth or oral tissue. The electronic and transducer assembly may receive incoming sounds either directly or through a receiver to process and amplify the signals and transmit the processed sounds via a vibrating transducer element coupled to a tooth or other bone structure, such as the maxillary, mandibular, or palatine bone structure.