Abstract: An ultrasonic speaker including: a vibration film having a conductive layer; a pair of fixed electrodes provided oppositely to respective surfaces of the vibration film; and an ultrasonic transducer that causes the vibration film to generate sound waves by applying a DC bias voltage to the conductive layer of the vibration film while applying an alternating signal between the pair of fixed electrodes, and outputs the sound waves generated by the vibration film from two sound wave output surfaces via through-holes provided in each of the pair of fixed electrodes. The two sound wave output surfaces of the ultrasonic transducer are disposed in a direction intersecting with a sound wave emitting direction at right angles.

Abstract: A membrane for an acoustic transducer is provided which comprises a first portion having a first stiffness, and a second portion comprising a first subsection having a second stiffness and a second subsection having a third stiffness, wherein the second stiffness and the third stiffness are different.

Abstract: An acoustical transmission interface comprising a plate comprising a first portion having a first thickness and a second portion having a second thickness wherein the first thickness is thinner than the second thickness; an inertial type audio transducer; and means to affix the audio transducer and the first portion of the plate; where the audio transducer extends through an opening in a substrate, and the plate comprising a tab and a stop that position the plate within the opening of the substrate.

Abstract: A vibrating body for an acoustic transducer is provided, in which the high resonance frequency associated with inverse resonance can be outside the audible range and which can improve the acoustic characteristic of a speaker device. The vibrating body 1 for an acoustic transducer includes: a diaphragm 2 including a first vibrating part 2a and a second vibrating part 2b formed in proximity of the outer circumferential edge of the first vibrating part 2a; and an edge portion 3 formed in proximity of the outer circumferential edge of the diaphragm 2. In the vibrating body 1 for an acoustic transducer, first reinforcing portions 6a and 6b are formed so as to extend from the second vibrating part 2b to the edge portion 3 in a radial direction.

Abstract: The disclosed embodiments relate to a technique for inductively charging an electronic device. This technique involves winding an audio cable for the electronic device around a charging mechanism multiple times so that one or more conductors in the audio cable form an inductive receiving coil. Next, a magnetic field is created through the charging mechanism to induce a current in the inductive receiving coil. Finally, the induced current in the inductive receiving coil is used to charge a rechargeable battery for the electronic device.

Abstract: A control pad structure (10) with a built-in speaker (40) includes a circuit board (20) disposing a plurality of touch switches (22) thereon; a control pad (30) is provided with a plurality of bulge points (36); and an accommodating space (35) is formed between the circuit board and the control pad for enclosing the speaker therein. The speaker is also provided with a bulge point. When the control pad is operated, the bulge points engage with corresponding touch switches to activate the switches. A plurality of openings (24) is defined in the circuit board between the touch switches.

Abstract: The present invention relates to a driver circuit wherein upper and lower legs of a first driver comprise first and second sets of parellelly coupled semiconductor switches, respectively. A control circuit is configured to generate respective control signals for the first and second sets of parellelly coupled semiconductor switches to create a current path through the upper and lower legs during an overlap time period between state transitions of a driver output.

Abstract: A headset is constructed to generate an acoustically distinct speech signal in a noisy acoustic environment. The headset positions a pair of spaced-apart microphones near a user's mouth. The microphones each receive the user's speech, and also receive acoustic environmental noise. The microphone signals, which have both a noise and information component, are received into a separation process. The separation process generates a speech signal that has a substantial reduced noise component. The speech signal is then processed for transmission. In one example, the transmission process includes sending the speech signal to a local control module using a Bluetooth radio.

Abstract: A meter device includes an indicator unit, movably supported within a predetermined range, for representing an amplitude value of an input signal by a movement amount ?? from a reference position ?0 which is one end of the predetermined range. A gain acquiring unit acquire a gain of the input signal; and a maximum movement amount determining part determines a maximum movement amount ??M of the indicator unit at the gain based on the gain acquired by the gain acquiring unit. A drive control unit moves the indicator unit to a position corresponding to the amplitude value of the input signal between the reference position ?0 and a maximum movement position ?M moved from the reference position ?0 by the maximum movement amount ??M based on the maximum movement amount ??M determined by the maximum movement amount determining part and the amplitude value of the input signal.

Abstract: A microphone device is provided which comprises a main microphone (MM), at least one control microphone (CM) and a digital signal processing unit (DSP) coupled to the main microphone (MM) and the at least one control microphone (CM). The digital signal processing unit (DSP) receives the output of the main microphone (MM) and the output of the at least one control microphone (CM). Based on the output signals, the digital signal processing unit (DSP) is adapted to perform a noise suppression of pop noise in the output signal of the main microphone (MM).

Abstract: An apparatus and method for processing an audio signal in a dual standby mobile communication terminal are provided. The apparatus includes a first modem for supporting a first system and for outputting an interrupt signal that requests audio signal processing when a call for the first system is generated, and a second modem for supporting a second system, for receiving the interrupt signal that requests the audio signal processing from the first modem, and for performing digital signal processing of the audio signal for the first system.

Abstract: In general, in some aspects, a loudspeaker includes a horn including a first end panel, a second end panel, a first side panel, and a second side panel. Edges of at least the first and second side panels define a diffraction slot opening. A plurality of manifold components each has an output opening coupled to the diffraction slot opening. The output openings of the plurality of manifold components together constitute a diffraction slot source at the diffraction slot opening. A plurality of electro-acoustic transducers are each coupled to an input opening of one of the manifold components.

Abstract: A loudspeaker apparatus comprises a housing, an adsorptive material provided inside the housing, for physically adsorbing gas inside the housing, a vibration section including a diaphragm and provided in an opening formed in the housing, a drive section for driving the diaphragm to generate sound from the diaphragm, and a negative stiffness generating mechanism provided inside the housing, for reducing an acoustic stiffness inside the housing, the acoustic stiffness acting on the diaphragm.

Abstract: A loudspeaker cone body made of plastic includes a base carrier material and a filler material. The base carrier material is selected to optimize overall flow, weight and stiffness. The filler material may be a nanomaterial that provides for adjustment of process and acoustic related characteristics in the loudspeaker cone body that become relevant when the loudspeaker cone body is operated in a loudspeaker. Acoustic related characteristics that may be adjusted include a stiffness to weight ratio and an acoustic damping of the loudspeaker cone body. A predetermined weight percent of the filler material may be combined with the base carrier material to obtain repeatable desired acoustic related characteristics. The acoustic related characteristics may be adjusted by changing the predetermined weight percent of the filler material.

Abstract: In the present invention, a plurality of condenser microphones is formed on a substrate. Then, charges are fixed to a dielectric film provided in each of the condenser microphones. After an amount of deposited charges of the dielectric film of each of the plurality of the condenser microphones is inspected by measuring capacitance of each condenser microphone while applying bias between the first electrode film thereof and the second electrode film thereof, the substrate is diced so that each of the condenser microphones is separated. Thus, at least the step of fixing charges is performed in a substrate state where the plurality of the condenser microphones is formed on the substrate. Therefore, the present invention contributes to enhancement of productivity in an assembly process of the condenser microphone and reduction in equipment costs.

Abstract: An apparatus for generating filter characteristics for filters connectible to at least three loudspeakers at defined locations with respect to a sound reproduction zone includes an impulse response reverser for time-reversing impulse responses associated to the loudspeakers to obtain time-reversed impulse responses. The apparatus furthermore includes an impulse response modifier for modifying the impulse responses or the time-reversed impulse responses such that impulse response portions occurring before a maximum of a time-reversed impulse response are reduced in amplitude to obtain the filter characteristics for the filters.

Abstract: Methods and systems to produce audio output signals from audio input signals. In one embodiment, a first portion of the audio input signals can be pre-processed, with the output used to modulate ultrasonic carrier signals, thereby producing modulated ultrasonic signals. The modulated ultrasonic signals can be transformed into a first portion of the audio output signals, which is directional. Based on a second portion of the audio input signals, a standard audio speaker can output a second portion of the audio output signals. Another embodiment further produces distortion compensated signals based on the pre-processed signals. The distortion compensated signals can be subtracted from the second portion of the audio input signals to generate inputs for the standard audio speaker to output the second portion of the audio output signals. In yet another embodiment, noise can be added during pre-processing of the first portion of the audio input signals.

Abstract: A speaker attenuation system includes an attenuating member comprised of suitable material and having a size and a shape capable of attenuating a speaker when positioned in a central beam region of the speaker. A positioning mechanism is capable of positioning the attenuating member predominantly in the central beam region of the speaker in such a manner that it is between the speaker and an audience in a performance setting. The suitable material, such as open cell foam (i.e., acoustic foam), preferably has a property that it is capable, at one or more thicknesses, of reducing amplitudes of a majority of frequencies between one-thousand and eight-thousand Hertz by at least six decibels without reducing amplitudes of any frequencies in that range by more than eighteen decibels. Accordingly, the “beaminess” of the speaker can be reduced without creating a “hole in the sound.

Abstract: A sound reproducing screen for an ultrasonic converting and reproducing method wherein a sound signal is carried on the ultrasonic wave which is transmitted via the screen which has a lattice structure in which a plurality of cells is continuously arranged. Using the screen, the sound signal can be divided from the ultrasonic wave, so that the sound signal can be reproduced. A cell structure of the screen is thus provided for converting the ultrasonic wave into the sound signal by ultrasonic conversion and reproduction which is simple to make and which has a maximum conversion efficiency. Accordingly, an efficiency of reproducing the sound source in a low frequency band as well as a high frequency band is superior, and a realistic three-dimensional sound system can be implemented.

Abstract: Disclosed are personal electronic devices (PEDs) having a sensory enhancement (SE) system for monitoring environmental conditions and detecting environmental events, for example but not limited to, changes in acoustic, thermal, optical, electromagnetic, chemical, dynamic, wireless, atmospheric, or biometric conditions. The detection of such events can be used to invoke a notification, an alert, a corrective action, or some other action, depending upon the implementation to the PED user or another party.

Abstract: A system to present the user a 3-D virtual environment as well as non-visual sensory feedback for interactions that user makes with virtual objects in that environment is disclosed. In an exemplary embodiment, a system comprising a depth camera that captures user position and movement, a three-dimensional (3-D) display device that presents the user a virtual environment in 3-D and a haptic feedback device provides haptic feedback to the user as he interacts with a virtual object in the virtual environment. As the user moves through his physical space, he is captured by the depth camera. Data from that depth camera is parsed to correlate a user position with a position in the virtual environment. Where the user position or movement causes the user to touch the virtual object, that is determined, and corresponding haptic feedback is provided to the user.

Abstract: By integrating plural condenser microphone constituting bodies in an array state, a condenser microphone array is obtained. The condenser microphone array is formed by dicing a laminate of a circuit board forming member, a housing forming member, a spacer forming member, diaphragm sheet, diaphragm plate forming member and a cover forming member which form a part of the plural condenser microphone constituting bodies respectively. In an air chamber of each condenser microphone constituting body constituted in the laminate, a back plate and a contact spring are built.

Abstract: A circuit board forming member, a case forming member, a spacer forming member, a diaphragm sheet and a diaphragm plate forming member are laminated to form a portion, as excepting a back plate and a contact spring, of a condenser microphone, in plurality in a laminate. Moreover, the back plate and the contact spring are arranged in the air chamber, which is defined by the individual forming members, to form a plurality of condenser microphone constituents in the laminate. Next, the laminate is cut to separate the individual condenser microphone constituents thereby to manufacture the condenser microphones.

Abstract: An electronic device comprises electronic circuitry and a moulded plastic covering (5). In order to prevent ingress of water and dust, a hermetic seal is provided between the covering (5) and components that are accessible through the covering (5), such as a socket (7) or display, or components such as electrical connections (9). The components (7, 9) are at least partially coated in a coating material 15, such as a thermally activated polyurethane adhesive or thin thermoplastic, to provide a strong bond to the covering (5) that does not require the use of solder. The device may be a wearable device in which waterproof sealing is required.

Abstract: Contemplated planar magnetic induction transducers comprise a driver portion that provides a static magnetic field and a dynamic magnetic field to an electrically conductive sound producing membrane to thereby induce a current in the membrane that operates as a voice coil. Most typically, the dynamic magnetic field is produced by a coil that surrounds the magnet, and the membrane is floating above the driver portion. In especially preferred aspects, the sound producing membrane is physically independent from the driver portion and can be separately installed from the driver portion.

Abstract: A communication system includes a set of microphones, a speaker, memory and a processor. The processor is configured to operate on input signals from the microphones to obtain a resultant signal representing the output of a virtual microphone which is highly directed in a target direction. The processor also is configured for self calibration. The processor may provide an output signal for transmission from the speaker. The output signal may be a noise signal, or, a portion of a live conversation. The processor captures one or more input signals in response to the output signal transmission uses the output signal and input signals to estimate parameters of the speaker and/or microphone.

Abstract: A device and method for mapping, diagnosing and treating the intestinal tract is provided using a capsule passing through the intestinal tract. Further, a capsule tracking system is provided for tracking a capsule's location along the length of an intestinal tract as various treatment and/or sensing modalities are employed. In one variation, an acoustic signal is used to determine the location of the capsule. A map of sensed information may be derived from the pass of a capsule. Capsules may be subsequently passed through to treat the intestinal tract at a determined location along its length. One variation uses an electrical stimulation capsule to treat and/or diagnose a condition in the intestinal tract.

Abstract: A speaker device includes a terminal member, a voice coil bobbin, and a connecting member mounted on the voice coil bobbin. The connecting member has a terminal mounting part. A pair of claw part and hook-shaped projecting part is provided on an upper end portion of the terminal mounting part, and a mounting base having a groove is provided on a lower end portion thereof. A projecting part and an opening are provided at the upper end portion of the terminal member, and a mounting part is provided at the lower end portion thereof. The projecting part has a function to move the upper end portion of the terminal member to a circumferential direction of the connecting member.

Abstract: A transducer generates acoustic energy. The transducer is suitable for incorporation into any device that needs sound reproduction capability, including devices with generally rectangular geometries such as cell phones, PDAs, and portable gaming devices. The transducer includes a displaceable membrane with a deformable corner. The deformable corner may extend the frequency range over which the transducer generates acoustic energy without distortion. The deformable corner may be part of a membrane periphery around the displaceable membrane. The membrane periphery may be square, triangular, or may take any other polygonal shape.

Abstract: An apparatus, system, and method is disclosed for providing auxiliary heat dissipating capacity to a loudspeaker assembly. The apparatus comprises a plug that is inserted into a vent at the back of a loudspeaker assembly and extends away therefrom. The plug makes a thermal connection with the pole piece through which the vent is bored, so that the plug conducts at one end the heat from the pole piece that is radiated thereto by the voice coil and radiates this heat to the ambient air at its other end. A plate may be affixed to it other end to provide an additional heat sink for the apparatus. The apparatus may be removable or permanently affixed to the pole piece.

Abstract: A digital sound system suitable for a digital speaker device for directly converting analog sound by a circuit using a ?? modulator and a mismatch shaping filter circuit to output a plurality of digital signals and a plurality of speakers driven by the plurality of digital signals. A digital speaker driving device includes a ?? modulator, a post filter, s driving circuits, and a power supply circuit to supply power to the ?? modulator, the post filter and the s driving elements and the s driving circuits are adapted to s digital signal terminals.

Abstract: An improved linear motor is provided useful in conjunction with audio equipment for reduced distortion audio output at high voice coil displacements. The improved linear motor may include a yoke, a gap plate which forms an air gap with the yoke, magnets coupled to the yoke and the gap plate, a former, and a voice coil coupled to the former. The magnets generate a magnetic field across the air gap, which is relatively narrow. The former and coil fit in the air gap and may move in a vertical direction. The voice coil includes more than one segment, each having differing electrical resistance. The differing resistances cause the force on the voice coil to be uniform regardless of displacement of the voice coil vertically within the air gap. Resistance differences between the segments may be caused by differing the wire lengths making up each segment of the coil. Likewise, each segment may be made of differing material to vary resistance.

Abstract: The present invention relates to a screen, a control method, a program, and a recording medium that can provide audio and video at an optimal position for a user. A beam 111 is fixed to a frame 24. The beam 111 is connected to a beam 112 through a rotation shaft 113. Wheels 23A, 23B are fixed to the beam 112, and the wheels 23A, 23B allows movement along a rail provided in a ceiling. A speaker, a display, etc., is mounted on the frame 24. In a case in which the speaker is mounted, when the frame 24 is rotated around the rotation shaft 113, the front surface of the speaker can be directed toward a position of a user. The present invention may be applied to, for example, a screen speaker device.

Abstract: Clock control is handed over in a bus circuit from a first circuit (14) to a second circuit (12). A clock conductor (10a) is driven to a predetermined voltage level with the driver circuit of the first circuit after a last clock period following the start of execution of the handover command and to continue driving the clock conductor (10a) to the predetermined voltage level for a first time-interval. The clock conductor (10a) is driven to the predetermined voltage level with the driver circuit of the second circuit after a second time interval following the start of execution of the handover command until a third time interval has elapsed following the end of the second time interval. Subsequently the clock conductor (10a) is driven under control of the clock circuit (140) of the second circuit (14).

Abstract: Audible signals (m2) which are transmitted via an uncontrolled transmission path (11) to an individual's ear wearing the control signal processing path (l) of a hearing device are compensated by audible signals (m3) which are produced by an additional controlled signal processing path (20). Signal processing parts are commonly exploited (25b, 25d, 7/27) by both controlled signal processing paths (1, 20).

Abstract: An improved structure of a speaker comprises a cone frame, a surround and a diaphragm, wherein a circumference of the diaphragm is sealed to an edge of an opening of the cone frame. A container portion is disposed on an inner side of the opening of the cone frame. The surround is disposed between the diaphragm and the container portion of the cone frame. Therefore, when an audio-frequency electrical signal is coupled with a voice coil inside the cone frame, the voice coil outputs an audio signal to drive the diaphragm to move and generate a sound. The present invention uses the surround to let the diaphragm move up and down with less resistance, which helps the diaphragm move more smoothly and reduces a distortion of sounds and increases the sensitivity of sound pressure level by enlarging the diaphragm moving area.

Abstract: A thermoacoustic device includes a substrate, at least one first electrode, at least one second electrode and a sound wave generator. The at least one first electrode and the at least one second electrode are disposed on the substrate. The sound wave generator is contacting with the at least one first electrode and the at least one second electrode. The sound wave generator is suspended on the substrate via the first electrode and the second electrode. The sound wave generator includes a carbon nanotube structure.

Abstract: A solar flat speaker structure including a flat speaker and a solar cell is provided. The flat speaker includes a chamber substrate, a diaphragm and an upper electrode; the solar cell includes a substrate, and the flat speaker is disposed on a surface of the substrate of the solar cell, so that solar power absorbed by the solar cell is converted to electricity and provided to the flat speaker. A speaker device including at least a flat speaker, a solar cell or the above solar flat speaker structure and an integrator is also provided. The integrator includes at least an audio decoder, a radio frequency receiver, a speaker amplifier, a display and a power manager. The speaker device is expanded using a folding method or a scrolling method.

Abstract: The invention relates to the use of a directional sound source, a medical treatment station and a treatment room, in which each such medical treatment station has a directional sound source assigned to it.

Abstract: The present invention provides a drive unit manufacturing method including the steps of: preparing a conducting wire which contains at least copper and forms a voice coil for conversion between sound and electric signals and arranging the conducting wire on a land which is formed on a board that the voice coil is arranged on and is provided for transmitting the electric signals; and connecting the conducting wire and the land by resistance welding.

Abstract: A structure of a micro-electro-mechanical systems (MEMS) electroacoustic transducer includes a substrate, a diaphragm, a silicon material layer, and a conductive pattern. The substrate includes an MEMS device region. The diaphragm has openings, and is disposed in the MEMS device region. A first cavity is formed between the diaphragm and the substrate. The silicon material layer is disposed on the diaphragm and seals the diaphragm. The conductive pattern is disposed beneath the diaphragm in the MEMS device region.

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 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: A speaker device may include a substrate, a membrane above the substrate, and an electrode above the membrane, a plurality of first supporting members, and a plurality of second supporting members. The second chamber is enclosed between the membrane and the substrate, and the first chamber is enclosed between the electrode and the membrane. The first supporting members are provided in the first chamber space and may space the membrane apart from the electrode. The second supporting members are provided in the second chamber space and may space the membrane apart from the substrate.

Abstract: A method to operate a hearing device and a hearing device are disclosed comprising a plurality of source units (S1, . . . , Sn). The method comprises the steps of monitoring activities of the source units (S1, . . . , Sn), selecting input signals of active source units (S1, . . . , Sn), processing the selected input signals of active source units (S1, . . . , Sn), and generating an output signal of the hearing device by said processing. According to the present invention, the parameters for controlling said processing are derived from at least one active source unit (S1, . . . , Sn) and/or from at least one selected input signal, respectively. The new technology describes for the first time a hearing device comprising a plurality of source units that are dealt with in automatic manner.

Abstract: A thermal management system promotes cooling effects of a loudspeaker. The thermal management system includes an internal heat sink having a tubular shape and mounted between a pole piece and a magnet of the loudspeaker, the internal heat sink having pleat portions to form a plurality of air passages on an inner surface from top to bottom thereof; and a back plate connected to the pole piece and having ventilation holes that vertically penetrate through the back plate, the internal heat sink and the magnet being mounted on the back plate. A lower end of the air passage on the internal heat sink is positionally matched with an upper opening of the ventilation hole on the back plate, thereby allowing an air flow through the air passage and the ventilation hole.

Abstract: An acoustic device and method of making said acoustic device. The acoustic device comprises a diaphragm having resonant bending wave modes in the operating frequency range, and a plurality of electromechanical transducers coupled to the diaphragm. The positioning and mechanical impedance of the transducers are such that at least a selected number of the resonant bending wave modes are balanced so that the net transverse modal velocity over the area of the diaphragm tends to zero with the balancing of the resonant bending wave modes being achieved substantially by the positioning and mechanical impedance of the transducers. The parameters of the diaphragm may be such that there are a plurality of nodal grouped locations at or around which the nodal lines of a selected number of resonant modes are clustered. Each transducer may be mounted at one of the plurality of nodal grouped locations.

Abstract: The invention provides an integrated circuit. The integrated circuit receives a first signal from a microphone via a first node. In one embodiment, the integrated circuit comprises a biasing circuit and a buffering circuit. The biasing circuit is coupled between the first node and a second node, drives the microphone with a first voltage source, and filters the first signal to generate a second signal at the second node. In one embodiment, the biasing circuit comprises a first resistor, a first capacitor, and a load element. The first resistor is coupled between the first voltage source and the first node. The first capacitor is coupled between the first node and the second node. The load element is coupled between the second node and a second voltage source. The buffering circuit is coupled between the second node and a third node and buffers the second signal to generate a third signal at the third node.

Abstract: A sound-permeable film (11) includes: a porous membrane (13) that contains polytetrafluoroethylene as its main component, allows sound to pass therethrough, and prevents an foreign object such as a water drop from passing therethrough; and a heat-resistant double-sided adhesive sheet (16) that is disposed on a part of at least one of main surfaces of the porous membrane (13).