Abstract: An example set-up method for a loudspeaker system capable of generating at least one directed beam of audio sound includes emitting directional beams of set-up sound signals from the loudspeaker system into a room, registering at least one reflection of the emitted signals at one or more locations within the room, and evaluating the registered reflected signals to obtain data for use in configuring the surround sound system.

Abstract: A microphone and a method for manufacturing the same. The microphones includes a substrate die; and a microphone and an accelerometer formed from the substrate die. The accelerometer is adapted to provide a signal for compensating mechanical vibrations of the substrate die.

Abstract: An air motion transformer loudspeaker driver including a plurality of diaphragm layers having electric conductors. Each of the diaphragm layers defines a surface having at least one curved portion. The curved portions have an axis of curvature being perpendicular to the surface of the diaphragm layer at the location of the curved diaphragm portions.

Abstract: According to the present disclosure, there is provided a wireless power receiver configured to provide a continuous phone call environment or content reproduction environment while at the same time conveniently performing wireless charging during the phone call or content reproduction by controlling to activate the operation of an audio output module provided in a wireless power receiver and change an output path of the audio signal when the wireless power receiver is detected. To this end, a wireless power receiver according to an embodiment disclosed herein can include an audio output module; a power receiving unit configured to receive a wireless power signal; and a control unit configured to detect a wireless power transmitter located in a charging region associated with the wireless power signal using the wireless power signal, and activate the operation of the audio output module when the wireless power transmitter is detected.

Abstract: A diaphragm of an MEMS electroacoustic transducer including a first axis-symmetrical pattern layer is provided. Because the layout of the first axis-symmetrical pattern layer can match the pattern of the sound wave, the vibration uniformity of the diaphragm can be improved.

Abstract: In one embodiment, a kit for making a personalized display includes a blank foldable to form a cavity according to score lines to form a display with a cavity, a print medium to receive a user selected-image and to adhere to the blank, and a bending wave generation unit attachable to a display element to receive a signal from a signal generator and produce bending waves within the display element that cause the display element to vibrate and generate audible acoustic waves in accordance with the signal. In another embodiment, a personalized display includes a blank with extensions folded to form a cavity, a print medium adhered to the blank and with a user-selected image printed via a digital printer, and a bending wave generation unit attached to a display element and positioned within the cavity.

Abstract: An inflatable ear piece is formed for insertion and placement in an external auditory canal. The ear piece has an inflatable balloon that may be selectively inflated and deflated. When the balloon is inflated, it expands and braces against the walls of the auditory canal. The ear piece has a receiver module with a sound generator and a connection to an exterior device. The sound waves generated in the receiver module are guided to the ear drum via a carrier which also holds the balloon. A pump and valve is provided for inflating, or selectively deflating, the balloon. The pump is connected by way of a micro tube that projects centrally inside the sound channel of the balloon carrier and its tip projects into a radial projection or a bridge across the sound channel. The receiver and balloon modules may be connected in any rotational orientation.

Abstract: A loudspeaker drive circuit has a microphone which forms part of an acoustic echo cancellation system. An input signal is processed before application to a loudspeaker driver, and the processing is controlled in dependence on the echo cancellation system performance, such as to control the extent to which the loudspeaker is driven into a non-linear operating region. In this way, the linearity can be controlled so as to provide an excursion limit, without needing a model of the loudspeaker or additional dedicated sensors.

Abstract: A highly directional microphone includes an acoustic tube and a microphone unit that is disposed inside the base end of the acoustic tube. The acoustic tube is composed of an elastic material. An adjustable member elongates and contracts the distance between the microphone unit and the front end of the acoustic tube. The acoustic tube is held by an acoustic-tube protector having openings on a peripheral wall thereof. The base end of the acoustic tube is integrated to the acoustic-tube protector, and the front end of the acoustic tube is connected to a sliding cylinder that is slidably fitted in the axis direction of the acoustic tube along the acoustic-tube protector.

Abstract: A speaker with a digital signal processor is disclosed. In one aspect, a speaker comprises at least one electromechanical transducer configured to convert an electrical audio signal into sound and a digital signal processor configured to process an audio signal and send the processed audio signal to the electromechanical transducer directly or indirectly.

Abstract: A speaker includes a base, a diaphragm, a separating module, a first electrode set and a second electrode set. The base and a porous structure are formed a cavity. The diaphragm is disposed in the cavity and includes a first part and a second part. The separating module is located in the cavity and contacts the diaphragm to separate the cavity into the first and the second chambers. The first electrode set disposed in the first chamber is connected to a first sound source signal, such that the first part of the diaphragm is vibrated and the first sound source signal is exported from the first chamber. The second electrode set disposed in the second chamber is connected to a second sound source signal, such that the second part of the diaphragm is vibrated and the second sound source signal is exported from the second chamber.

Abstract: An assembly structure for a speaker system includes an iron grille, a speaker frame, a plurality of magnets and a plurality of pads. The speaker frame is covered with the iron grille and includes a plurality of through-holes on one face thereof. Each of the through-holes includes a first receiving portion and a second receiving portion. The speaker frame further includes a plurality of magnets each received in the first receiving portion of a respective one of the through-holes. The speaker frame further includes a plurality of pads each received in the second receiving portion of the respective one of the through-holes.

Abstract: A speaker is provided with multiple sound ports and a port plug. The sound port plug is used to close one of the sound ports while leaving the other sound port open to transmit sound. The speaker may have a first sound port located on the front of the speaker and a second sound port located on the rear of the speaker. In using the speaker, a person selects between the front port and the rear port and closes the undesired sound port.

Abstract: A bone conduction device, comprising: a sound input element configured to receive an acoustic sound signal; an electronics module configured generate an electrical signal representing said acoustic sound signal; and a transducer, comprising a mass configured to move in a rotational direction, configured to generate a vibrational force in a tangential direction with respect to a recipient's bone.

Abstract: Two or more acoustic transducers share the same acoustic port in a device. The acoustic properties—such as acoustic impedance and frequency response—of the shared acoustic port are matched to each of the two or more acoustic transducers. To accomplish acoustic impedance matching, a separate back volume is provided for each of the acoustic transducers, matched to that transducer. Frequency response matching can be accomplished by the design of the transducer itself, but also by providing an adjacent element in the acoustic system of the transducer. One transducer may serve as an element in the acoustic system of another transducer. Frequency response adjustment of an individual element may also affect acoustic impedance of the entire port-transducer system.

Abstract: A plate, a transducer, a method for making a transducer, and a method for operating a transducer are disclosed. An embodiment comprises a plate comprising a first material layer comprising a first stress, a second material layer arranged beneath the first material layer, the second material layer comprising a second stress, an opening arranged in the first material layer and the second material layer, and an extension extending into opening, wherein the extension comprises a portion of the first material layer and a portion of the second material layer, and wherein the extension is curved away from a top surface of the plate based on a difference in the first stress and the second stress.

Abstract: The present invention relates to pump systems and engine systems having graphene drums. In embodiments of the invention, the graphene drum can be utilized in the main chambers and/or valves of the pumps and engines.

Abstract: It is an objective of the present invention to provide an electronic device that includes an sound signal generating unit, and that can be placed on a cradle including a sound producing unit, in which a sound signal generated by the sound signal generating unit is output to the cradle such that the difference between the sound quality of sound produced from the electronic device and that of sound produced from the cradle is reduced.

Abstract: An electro-acoustic transducer or a device into which an electro-acoustic transducer is incorporated has at least two audio signal conductors through which the electro-acoustic transducer or device may be coupled to another device to convey analog audio signals representing sounds at a time when the other device places a relatively low DC bias voltage across the at least two audio signal conductors, and to be operated as a digital serial bus to exchange pieces of digitally-encoded data concerning the electro-acoustic transducer at a time when the other device places a relatively high DC bias voltage across the at least two audio signal conductors.

Abstract: A novel information providing system for providing various information to a terminal is proposed. The information providing system 1 according to an embodiment of the present invention includes a transmitter 10 for transmitting various information as information on sound pressure vibration, a portable telephone 20 serving as a terminal for receiving various information, and a server 50 connected through the Internet 40 to the transmitter 10. The configuration is characterized in that various information is transmitted as sound through the air serving as a medium from the transmitter 10 to the portable telephone 20.

Abstract: A device into which an electro-acoustic transducer is incorporated has at least two audio signal conductors through which the device may be coupled to another device to convey analog audio signals representing sounds at a time when the other device places a relatively low DC bias voltage across the at least two audio signal conductors, and to be operated as either a digital serial bus to exchange pieces of digitally-encoded data concerning the electro-acoustic transducer or as a trigger to cause the electro-acoustic transducer to be bypassed to enable another electro-acoustic transducer to be tested at a time when the other device places a relatively high DC bias voltage across the at least two audio signal conductors.

Abstract: MUSICAL ADVERTISING KEYRING, that with the hermetic carcass (2) that hosts in its interior an electronic mechanism form at least by battery (4), programmable microchip (5), speaker (6) and sensors, buttons or activation switches (7). Elements that are connected in a way, that when activated reproduce a melody or melodies prerecorded in the programmable microchip (5). The carcass (2) incorporates a LED (8) connected to a sensor, button or activation switch (7) and to the battery (4) of the electrical mechanism. The programmable microchip (5) is a microchip that has programmed a second alarm sound selectable at will.

Abstract: Ring-shaped membrane for an electro-acoustical loudspeaker, where said membrane comprises two or more dome-shaped annulus concentrically arranged around a central portion through which an imaginary axis of symmetry passes, where an outer periphery of said membrane is suitable to be attached to a surround; where the central portion is attached to a tower, which again is fastened to the loudspeakers driver, wherein the angle between a plane being perpendicular to the axis of symmetry and the attachment of the membrane to the surround resp. the tower is in the interval 0° to 40°, most preferred around 30°.

Abstract: A thermal acoustic speaker comprises a body and a thermoelectric converter. The body comprises a shell with at least one hole and a side with a sound hole. The shell defines a sound cavity in the body. The thermoelectric converter, disposed around at least a part of the shell, comprises a circuit and a conductive membrane and covers at least a part of the at least one hole. The circuit receives at least one electrical audio signal. The conductive membrane contacts a part of the circuit so that the thermoelectric converter heats air in the sound cavity to emit sound.

Abstract: A multimode audio reproduction device is disclosed that comprises first and second audio reproduction modules coupled by a support structure. The first and second audio reproduction modules are movable between two configurations. In the first configuration the audio reproduction device serves as a loudspeaker while in the second configuration the audio reproduction device serves as a headphone.

Abstract: A flat speaker apparatus including a driving circuit module, a flat speaker and a thermally conductive connector, and with a heat dissipating structure is introduced. The flat speaker includes a porous electrode and a vibrating film. The porous electrode causes the vibrating film to vibrate according to an audio signal output from the driving circuit module for generating sound. The thermally conductive connector connects the driving circuit module and the flat speaker to conduct heat from the driving module to the flat speaker for dissipation. A method for heat dissipation of the flat speaker is also introduced herein.

Abstract: The present invention encompasses a key chain device which receives disaster and/or radio broadcast worldwide. The digital component scans for and receives, the strongest broadcast signal, within the vicinity of the user and/or where disaster is occurring. Comprised of both digital & analog receivers and transmitters, the device can furthermore be used to communicate with and control analog and digital devices. This programmable feature enables the device to perform such functions as remotely controlling car starting/alarms, garage doors, and house alarms, etc. Enabling the internal microprocessor, said device can serve to entertain users with the digital media player, keeping them connected with a GPS locater. Additionally, the present invention has a cellular telephone component, with the ability to pair with wireless Bluetooth devices.

Abstract: Systems, methods, apparatus, and articles of manufacture to control audio playback devices are disclosed. An example audio playback device includes an audio output device to generate audio signals based on a signal source, a device interface to receive a first message from a first audio information source, and a source selector to change the signal source from a second audio information source to the first audio information source based on the first message.

Abstract: A micromini condenser microphone having a flexure hinge-shaped upper diaphragm and a back plate, and a method of manufacturing the same are provided.

Abstract: An in-flight system provides a user with an entertainment environment including movies, music, games, internet, map, etc. The in-flight system provides stored media content on one or more servers located throughout an aircraft cabin and each server is associated with a plurality of seats. In a preferred embodiment, the in-flight system provides for a communication port (e.g., USB or mini-USB connector or micro-USB connector) for connection to personal electronic device providing access to the server containing the stored media, access to an internet connection, and power. In one embodiment, the in-flight system provides for a seat display unit (typically located in the seat back of the next forward seat) and associated media module hardware to process the stored media content and drive the display.

Abstract: A speaker includes a case, a dome, a diaphragm, a first voice coil, a second voice coil, a first pole plate, a second pole plate, a first magnet, a second magnet and a yoke. The case is supported on the frame to form a receiving room therebetween. The yoke includes a bottom portion and a side portion perpendicularly extending upward from the center of the bottom portion. A first magnetic gap is formed between the inner wall of the side portion and the outer wall of the magnet for receiving the first voice coil, and a second magnetic gap is formed between the outer wall of the side portion and the inner wall of the second magnet for receiving the second voice coil.

Abstract: A new type of sound transducer, with high output capability and compact size employs a motor in combination with a displacement amplification system using curved lamina. The motor may be electrostatic, such as piezoelectric, or electrodynamic, such as magnetostrictive, or balanced armature. Newer forms of driver materials such as PMN-PT and layered PZT or Galfenol or Terfenol-D are examples. The design exhibits high source levels, smooth frequency response and uniform directivity. Although the application described herein relates to a low frequency sound source for underwater use, the design is not restricted to low frequencies or to an underwater sound source. Both sound production and reception may be conducted. Further, diaphragmatic displacement pumps and sensors may be equipped with curved lamina, which experience a change of curvature upon excitation of their edges, and which may generate displacement of their edges due to changes of their curvature.

Abstract: Techniques described herein generally relate to generating an audio signal with a speaker. In some examples, a speaker device is described that includes a membrane and a shutter. The membrane can be configured to oscillate along a first directional path and at a first frequency effective to generate an ultrasonic acoustic signal. The shutter can be positioned about the membrane and configured to modulate the ultrasonic acoustic signal such that an audio signal can be generated.

Abstract: A speaker device includes an acoustic-vibration member, an actuator that is driven on the basis of a sound signal and that includes a displacement-output unit that can obtain the displacement corresponding to the sound signal, and a displacement-output-transfer member configured to connect the displacement-output unit to a point predetermined on a face of the acoustic-vibration member. A displacement output of the actuator is transferred to the predetermined point via the displacement-output-transfer member, and the acoustic-vibration member is excited in a face direction from the predetermined point according to the displacement output.

Abstract: A wafer level package of micro electromechanical system (MEMS) microphone includes a substrate, a number of dielectric layers stacked on the substrate, a MEMS diaphragm, a number of supporting rings and a protective layer. The MEMS diaphragm is disposed between two adjacent dielectric layers. A first chamber is between the MEMS diaphragm and the substrate. The supporting rings are disposed in some dielectric layers and stacked with each other. An inner diameter of the lower supporting ring is greater than that of the upper supporting ring. The protective layer is disposed on the upmost supporting ring and covers the MEMS diaphragm. A second chamber is between the MEMS diaphragm and the protective layer. The protective layer defines a number of first through holes for exposing the MEMS diaphragm. The wafer level package of MEMS microphone has an advantage of low cost.

Abstract: An electro-acoustic transducer according to the present invention is provided. The electro-acoustic transducer includes a conductive plate with a plurality of openings, an electret diaphragm and a fluorescent layer. The electret diaphragm is positioned on the conductive plate and has a film body and an electrode layer. The film body has static charges carried and the electrode layer is formed on the upper surface of the film body. The fluorescent layer is positioned between the lower surface of the film body and the conductive plate.

Abstract: A diaphragm of an MEMS electroacoustic transducer including a first axis-symmetrical pattern layer is provided. Because the layout of the first axis-symmetrical pattern layer can match the pattern of the sound wave, the vibration uniformity of the diaphragm can be improved.

Abstract: An exemplary speaker assembly includes a housing, a loudspeaker, a sound-guiding channel and a cushion with a plurality of meshes. The housing has a receiving chamber and an acoustic chamber. The loudspeaker is accommodated in the receiving chamber. The sound-guiding channel is formed in the acoustic chamber. The sound-guiding channel has a first end with a first opening to communicate the sound-guiding channel and a second end with a second opening to communicate the sound-guiding channel with surrounding environment. The cushion is formed at the first opening of the sound-guiding channel for slowing down air flowed from the rear side of the loudspeaker to the sound-guiding channel.

Abstract: An electrode connection structure of a speaker unit is provided. The speaker unit includes at least one electrode layer, which is made of a conductive material, or made of a non-conductive material with a conductive layer formed on a surface thereof. The electrode connection structure includes a conductive electrode and an adhesive material. The conductive electrode is used for providing power supply signals for the speaker unit to generate sounds. The adhesive material adheres the conductive electrode in parallel with a surface of the electrode layer. The adhesive material has adhesive characteristics, so as to electrically connect the conductive electrode and the electrode layer, in which the adhesive material is adhered to a side of the surface of the electrode layer closely adjacent to the conductive electrode with a certain area.

Abstract: A plate, a transducer, a method for making a transducer, and a method for operating a transducer are disclosed. An embodiment comprises a plate comprising a first material layer comprising a first stress, a second material layer arranged beneath the first material layer, the second material layer comprising a second stress, an opening arranged in the first material layer and the second material layer, and an extension extending into opening, wherein the extension comprises a portion of the first material layer and a portion of the second material layer, and wherein the extension is curved away from a top surface of the plate based on a difference in the first stress and the second stress.

Abstract: According to the present disclosure, there is provided a wireless power receiver configured to provide a continuous phone call environment or content reproduction environment while at the same time conveniently performing wireless charging during the phone call or content reproduction by controlling to activate the operation of an audio output module provided in a wireless power receiver and change an output path of the audio signal when the wireless power receiver is detected. To this end, a wireless power receiver according to an embodiment disclosed herein can include an audio output module; a power receiving unit configured to receive a wireless power signal; and a control unit configured to detect a wireless power transmitter located in a charging region associated with the wireless power signal using the wireless power signal, and activate the operation of the audio output module when the wireless power transmitter is detected.

Abstract: A method of soldering terminals of a micro-speaker on a circuit board comprises the following steps. Firstly, providing a circuit board having a pair of through holes passing therethrough, and two soldering sections defined surrounding the pair of through holes. Secondly, the soldering sections are plated with soldering tin. Thirdly, providing a pair of columned terminals, the terminal includes an upper portion, a low portion and a body connecting between the upper portion and the low portion. Fourthly, the low portion of the terminal is inserted into the corresponding through hole and the body is resisted on the soldering section. Fifthly, the soldering tin is heated to solder the body on the soldering tin. Finally, the upper portion of the terminal is soldered onto the corresponding end of the voice coil. As a result, soldering defective can be reduced.

Abstract: Two or more acoustic transducers share the same acoustic port in a device. The acoustic properties—such as acoustic impedance and frequency response—of the shared acoustic port are matched to each of the two or more acoustic transducers. To accomplish acoustic impedance matching, a separate back volume is provided for each of the acoustic transducers, matched to that transducer. Frequency response matching can be accomplished by the design of the transducer itself, but also by providing an adjacent element in the acoustic system of the transducer. One transducer may serve as an element in the acoustic system of another transducer. Frequency response adjustment of an individual element may also affect acoustic impedance of the entire port-transducer system.

Abstract: An apparatus configured to acoustically process an acoustic signal for a transducer, and to provide a physical interface for a further apparatus within which the apparatus is located.

Abstract: A compound membrane (100) for an acoustic device (200), the compound membrane (100) comprising a first layer (101) and a second layer (102), wherein a value of Young's modulus of the second layer (102) does not vary more than essentially 30% in a temperature range between essentially ?20° C. and essentially +85° C.

Abstract: An electrode connection structure of a speaker unit is provided. The speaker unit includes at least one electrode layer, which is made of a conductive material, or made of a non-conductive material with a conductive layer formed on a surface thereof. The electrode connection structure includes a conductive electrode and an adhesive material. The conductive electrode is used for providing power supply signals for the speaker unit to generate sounds. The adhesive material adheres the conductive electrode in parallel with a surface of the electrode layer. The adhesive material has adhesive characteristics, so as to electrically connect the conductive electrode and the electrode layer, in which the adhesive material is adhered to a side of the surface of the electrode layer closely adjacent to the conductive electrode with a certain area.

Abstract: An inductively enabled audio speaker is disclosed configured to receive power inductively from an inductive power outlet. The audio speaker device has a voice coil which, as well as being able to produce an audible output, is further configured to function as a secondary inductor to inductively couple with a primary inductor. The inductively enabled audio speaker may be used to power an electrical device such as a Bluetooth earpiece, a telephone or the like.

Abstract: The electroacoustic transducer according to the invention has at least one diaphragm and at least one counterelectrode. In that case the diaphragm and/or the counterelectrode each have at least two electrically mutually insulated segments. In that arrangement the segments are so adapted that different electric signals are supplied or that different electric signals are delivered in response to exposure to sound of the sound transducer.

Abstract: The disclosure relates to a portable processing system adapted for being worn by a user and comprising an input transducer for converting an input sound to an electric input signal, and a signal processing unit adapted for processing an SPU-input signal originating from the electric input signal. The disclosure further relates to use of such system and to a method. The object of the present disclosure is to provide an alerting device aiding a user in administering the dose of a hearing protecting agent. The problem is solved in that the signal processing unit comprises a monitoring part for monitoring and determining an accumulated sound dose AccD in the electric input signal from a start time t0 and for generating an alarm output at a threshold time t0+?tth when a predefined dose threshold Dth is reached, wherein the predefined dose threshold Dth is set in relation to a recommended intake of a predefined hearing protecting agent to ensure an intended effect of the hearing protecting agent.

Abstract: An acoustic transducer radiates a sound wave into a medium, and includes: a shaft member which extends at a center portion of the acoustic transducer; first and second cylindrical acoustic radiation plates which have a cylindrical shape, a central axis of the first and second cylindrical acoustic radiation plates agreeing with the longitudinal axis of the shaft member, the first and second cylindrical acoustic radiation plates alternately arranged in a direction of the central axis; a plurality of connection members which have a ring shape, and connect adjacent first and second acoustic radiation plates to each other; a plurality of bending vibration plates each of which connects the shaft member and one of the connection members to each other; and a plurality of vibrators which are provided on the bending plates.