Abstract: A micro-speaker includes a vibrating unit including a diaphragm and a voice coil, and a magnetic circuit unit supporting the diaphragm. The diaphragm includes a position portion serving as an edge of the diaphragm. The magnetic circuit unit includes a base board, a first magnetic conduction member disposed at a central portion of the base board, a second magnetic conduction member around the first magnetic conduction member, and a magnetic gap formed by the first and second magnetic conduction members. A projection of the diaphragm along the vibration direction on the base board is within an outline of the base board. The micro-speaker has no frame or any structure with a frame configuration, which makes the magnetic circuit unit enlarge for providing improved performance.

Abstract: The present invention relates to a flat type speaker, and more particularly, to a flat type speaker of a vibration-lead plate of a voice coil plate, improving the quality deterioration due to the reduction of production process and the disconnection of a lead wire, by being attached to the top of a voice coil plate, increasing vibration efficiency, and eliminating the lead wire connection of the voice coil.

Abstract: (Problem) Provided is a multifunctional vibration actuator capable of improving load resistance while maintaining high impact resistance and high space-saving provided according to a thin profile. (Solution) By constructing an outer periphery section of a suspension to protrude from a housing, load resistance against external pressure is improved while a thin profile is maintained. Also, by integrating the suspension and the housing, the number of components is reduced, the attendant number of operations is reduced, and durability provided by an integrated structure is obtained.

Abstract: Embodiments of a directional acoustic sensor or acoustic velocity microphone are disclosed that include a sensor frame structure, a support means, and a buoyant object. The buoyant object is suspended in the sensor frame structure using the support means. The buoyant object has a feature size smaller than a wavelength of the highest frequency of an acoustic wave in air. The buoyant object receives three-dimensional movement of the air excited by the acoustic wave. The three-dimensional movement that the buoyant object receives is detected using a detection means. A particle velocity of the acoustic wave is derived from the three-dimensional movement of the buoyant object using the detection means. The detection means can be an optical detection means, an electromagnetic detection means, or an electrostatic detection means. An acoustic image of the acoustic wave can be determined by distributing two or more directional acoustic sensors a multi-dimensional array.

Abstract: Provided is an acoustic transducer including: a semiconductor substrate; a vibrating membrane provided above the semiconductor substrate, including a vibrating electrode; and a fixed membrane provided above the semiconductor substrate, including a fixed electrode, the acoustic transducer detecting a sound wave according to changes in capacitances between the vibrating electrode and the fixed electrode, converting the sound wave into electrical signals, and outputting the electrical signals. At least one of the vibrating electrode and the fixed electrode is divided into a plurality of divided electrodes, and the plurality of divided electrodes outputting the electrical signals.

Abstract: A vibration generator includes a coil arranged to generate magnetic fields, a ring-shaped yoke arranged to amplify an electromagnetic force generated by the magnetic fields in cooperation with the coil, a vibrating body arranged radially inward of the coil to move in a thrust direction, a ring-shaped magnet arranged in an outer peripheral portion of the vibrating body and opposed to the coil, and a spring arranged to support the vibrating body on at least one side of the vibrating body in thrust-direction.

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: The present invention relates to a plate speaker, and more particularly, to a guide damper intended for a plate speaker and made of a flexible synthetic resin material. The guide damper for a voice coil plate for a plate speaker includes: a coil plate bonding part made of a flexible synthetic resin material and having an integrated structure, wherein the coil plate bonding part has a groove in the lengthwise direction thereof such that the voice coil plate is seated on the central portion thereof; an outer frame having a closed loop shape and adhering to a base frame defining the outer shape of the plate speaker, wherein the outer frame defines the outer shape of the damper; and a damper bridge connecting each of the left and right sides of the coil plate bonding part to the outer frame, wherein the damper bridge provides damping between the coil plate bonding part and the outer frame.

Abstract: The present invention addresses the problem of increasing the lifetimes of an oscillatory wave motor and a sound generation device using the oscillatory wave motor as a drive source, and proposed the structure and mechanism for integrally increasing the lifetimes of the oscillatory wave motor and the sound generation device using the oscillatory wave motor as the drive source. To maintain the drive performance of a drive unit, the drive unit is provided with a core sheathing structure, with the result that the drive unit is prevented from breaking and being damaged, and even if the entire drive unit is worn down, an intrinsic drive unit member serving as a core portion keeps the same drive area, so an initial drive feature is maintained. The descending order of a wear resistance of the members is the drive unit core material, a moving unit, and a drive unit sheathing material.

Abstract: A bending vibration type sound transmitter includes a plurality of vibrating bodies that perform resonant vibration and two lids. The plurality of vibrating bodies is fastened between the two lids.

Abstract: A piezoelectric speaker includes: a chassis having a wall surface including an opening; a plurality of diaphragms including at least a first piezoelectric diaphragm and second piezoelectric diaphragms which vibrate in phases opposite to each other when a voltage is applied; and a joint member which connects the first and second piezoelectric diaphragms in a positional relationship such that the diaphragms are located at positions different from each other in a thickness direction. One of the diaphragms is provided, in the opening of the chassis, to have one surface facing an outside of the chassis and another surface facing an inside of the chassis. The diaphragm functions as a radiation plate which radiates a sound wave by vibrating at an amplitude generated by synthesizing amplitudes of the first and second piezoelectric diaphragms.

Abstract: The instant development relates to utilizing the sonic motion generated by a speaker to move objects in various directions in response to the variation in the frequency and amplitude of the sonic vibrations. This can be used to move objects in a linear and/or rotating manner. This is accomplished by the utilization of directionality oriented members.

Abstract: An exemplary speaker set includes a shell and a speaker. The shell includes a bottom cover and a top cover engaging with the bottom cover. The bottom cover and the top cover cooperatively define a resonance chamber therebetween. The bottom cover defines a through hole therein. The top cover defines a mounting hole corresponding to and communicating with the through hole. The speaker includes a vibration part and a magnetic part driving the vibration part. The vibration part is inserted the mounting hole and engages with the top cover. The magnetic part is inserted the through hole and intimately engages with the bottom cover.

Abstract: This invention provides a moving iron unit for loudspeakers, which includes coil, iron core, diaphragm, and magnet, among which, the iron core is disposed in the coil, and the magnet is connected to the diaphragm on a transmission basis. It is characterized in that it also includes vibrating ring, to which the magnet is secured, and which is secured to the inner wall of a shielded cavity through its elastic body disposed radially, and which is connected to the diaphragm on a transmission basis through the transmission rod. Further, the unit comprises two diaphragms, which are disposed symmetrically at two sides of the vibrating ring and connected respectively to the vibrating ring on a transmission basis through a transmission rod. The coil is shaped directly by coiling on the iron core.

Abstract: An array speaker system includes a plurality of speaker units that respectively emit sounds in accordance with an input signal and an outer casing that supports the plurality of speaker units. Each speaker unit can be provided with a speaker operable to vibrate a vibrator in accordance with the signal, and a cavity back box that supports the speaker. The cavity back box forms a rear space with the vibrator on the opposite side with respect to the sound emission surface. The array speaker system thus constructed can emit a high power sound with a simple structure and improved stability in acoustic properties.

Abstract: An acoustic sensor includes: a semiconductor substrate; a vibrating membrane, formed above the semiconductor substrate, which includes a vibrating electrode; and a fixed membrane, formed on an upper surface of the semiconductor substrate, which includes a fixed electrode, the acoustic sensor detecting an acoustic wave according to a change in capacitance between the vibrating electrode and the fixed electrode. The fixed membrane has a plurality of sound hole portions formed therein in order to allow the acoustic wave to reach the vibrating membrane from outside, and the fixed electrode is formed so that a boundary of an edge portion of the fixed electrode does not intersect the sound hole portions.

Abstract: Provided is a driver unit including an acoustic conversion unit; and a housing body in which the acoustic conversion unit is housed, and in which an opening is formed. The acoustic conversion unit includes a pair of magnets arranged to face each other, a coil to which an input signal is supplied, an armature at which a vibrating part passing through the coil and arranged between the pair of magnets is formed, and a vibrating plate connected to the armature. A size of the opening is larger than 40 ?m and smaller than 100 ?m.

Abstract: A multi-functional subminiature speaker, namely a bone conduction speaker, which can generate vibration for a bone conduction function, bodily sensation of vibration, speaker attachment, and the vibration modes over the housing unit, without any projections, and which has an acoustic portion unit detachably mounted. The bone conduction is performed without the projections because the vibration can be generated over the whole surface of the multi-functional subminiature speaker, such that loss of the magnetic force transmitted to the vibration coil is minimized by disposing the magnets on both inner and outer sides with respect to the vibration coil.

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: There is provided: first to fourth magnetic pole yokes 13-16 magnetized by the magnets 11, 12 having both poles on these opposite faces to establish a magnetic pole; and a vibrating membrane 17 disposed between the magnets 11, 12 and electromagnetically coupled to the yokes 13-16 by energizing a meandering coil pattern 17b thereon to vibrate in a predetermined direction. The yokes 13-16 include: abutting sections 13a-16a to be magnetized with abutting against the magnets 11, 12, and magnetic pole sections 13b-16b establishing the magnetic pole in a band shape. The sections 13b-16b each are disposed on the upper and lower sides of the vibrating membrane 17, and disposed with a gap (sound emitting hole 19) such that the magnetic poles different in magnetic polarity are positioned alternately in the lateral direction of the membrane 17 to form magnetic pole faces on the upper and lower sides thereof.

Abstract: An exemplary vibration unit of a speaker includes a diaphragm and a coil connected to the diaphragm. The coil includes a main body, and a lead-out wire extending from a periphery of the main body. The lead-out wire includes a first segment extending from the periphery of the main body and being tangential to the main body, and a second segment extending from the first segment. The first and second segments are adhered to the diaphragm.

Abstract: An exemplary speaker set includes a shell and a speaker. The shell includes a bottom cover and a top cover engaging with the bottom cover. The bottom cover and the top cover cooperatively define a resonance chamber therebetween. The bottom cover defines a through hole therein. The top cover defines a mounting hole corresponding to and communicating with the through hole. The speaker includes a vibration part and a magnetic part driving the vibration part. The vibration part is inserted the mounting hole and engages with the top cover. The magnetic part is inserted the through hole and intimately engages with the bottom cover.

Abstract: A mobile computing device comprises a printed circuit board, a processing circuit, a surface mount microphone, and a vibration attenuation portion. The processing circuit is disposed on a first portion of the printed circuit board. The surface mount microphone is disposed on a second portion of the printed circuit board. The vibration attenuation portion of the board is configured to attenuate vibrations from the first to the second portion of the printed circuit board.

Abstract: A microphone in a miniaturized form is described herein. The microphone includes a flat carrier substrate having a first recess extending through the carrier substrate. The microphone includes a first electro-acoustic transducer on a first surface of the carrier substrate and at least partially overlapping the first recess. The microphone also includes a cap on a second surface opposite the first surface having a tight seal with the second surface and spanning the first recess. The cap includes at least one metallic layer for electromagnetic shielding.

Abstract: A device includes a substrate and a transducer attached to the substrate, wherein the substrate includes a surface to which the transducer is attached and at least one edge member extending along at least a portion of the outside edge of the surface. The surface can be a generally planar surface. The edge member is stiffer than the surface. In several embodiments, the transducer is adapted to vibrate. The transducer can, for example, be selected from the group consisting of a piezoelectric transducer, an electrostrictive transducer and a magnetostrictive transducer. Preferably, the transducer is attached to the surface of the substrate by a metallic bonding agent and, more particularly, by welding.

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: A speaker module for a portable terminal is provided. The speaker module includes an upper case constituting a part of a module housing, a speaker unit, including a magnetic body, a voice coil and a vibration plate, formed in the upper case and a vibration motor, which is installed in the upper case and on one side of the speaker unit. The speaker module as structured above can secure a sufficient sound pressure and a sound volume in a portable terminal having a slim construction, makes it easier to secure space for installation within a portable terminal having a small size and slim construction in such a manner that a vibration motor, etc. are received and integrated in a module housing, and can improve the quality of sound in a portable terminal by achieving improved smoothness of output sound pressure in an audio frequency range.

Abstract: A speaker includes a ring-shaped vibrating member fixed to an internal support body at an internal peripheral edge, and a bobbin attached to an external peripheral edge thereof. A voice coil is attached to the bobbin and is located in a magnetic gap. A ring-shaped control member faces a front portion of the vibrating member, and a sound pass space is formed at an external peripheral side of the control member and at an internal peripheral side thereof. When listening to the speaker from a diagonal location, treble sound waves generated from the left side area are perturbed by the control member so as to prevent interference from sound waves generated from bilaterally separated areas, which prevents a decrease of treble sound pressure levels.

Abstract: An acoustic transducer, specifically an electrostatic loudspeaker (ESL) providing curvature in two directions for improved dispersion of sound waves. The compound curvature also provides a virtual focus of the propagated sound waves for accurate reproduction of musical program material recorded with standard single-point microphones. The highly directional nature of high frequency sound waves requires that a flat or cylindrical electrostatic transducer must be physically tall to allow a listener to either recline or stand. The two-axis curved structure enables a compact form of ESL to be realized, including bookshelf type loudspeakers whereas all known commercial units are comparable in height to that of a human listener. The individual curved ESL panels can also be readily combined to create larger transducer assemblies including omni-directional units.

Abstract: An audio output apparatus is provided. The audio output apparatus includes: a vibration member, a vibrator, a vibrator positioning unit, and a vibrator-depth positioning unit. The vibration member vibrates to output a sound. The vibrator is in contact with the vibration member and detachably attached thereto to allow the vibration member to vibrate in response to an input audio signal. The vibrator positioning unit controls a contact position between the vibrator and the vibration member. The vibrator-depth positioning unit adjusts a position of the vibrator in the direction of being pressed against the vibration member and brought into contact with the vibration member.

Abstract: A piezoelectric speaker (100) includes: a chassis (110) having a wall surface including an opening; a plurality of diaphragms including at least a first piezoelectric diaphragm and second piezoelectric diaphragms (120, 130a, 130b) which vibrate in phases opposite to each other when a voltage is applied; and a joint member (140a, 140b) which connects the first and second piezoelectric diaphragms (120, 130a, 130b) in a positional relationship such that the diaphragms are located at positions different from each other in a thickness direction, and one of the diaphragms is provided, in the opening of the chassis (110), to have one surface facing an outside of the chassis (110) and an other surface facing an inside of the chassis (110), and functions as a radiation plate which radiates a sound wave by vibrating at an amplitude generated by synthesizing amplitudes of the first and second piezoelectric diaphragms (120, 130a, 130b).

Abstract: A microphone unit includes: a partition member, including a vibration film configured to be vibrated by sound; a housing, defining an inner space, and formed with a first opening and a second opening, the inner space being divided into a first space and a second space by the partition member, the first space adapted to be communicated with an outer space via the first opening, and the second space adapted to be communicated with the outer space via the second opening; and a shutter, configured to close one of the first and second openings; and an amplifier, configured to: amplify an electric signal at a first gain when the shutter closes the one of the first and second openings; and amplify the electric signal at a second gain that is larger than the first gain when first and second openings are opened.

Abstract: An acoustic-electric transducer for a microphone may include a cavity delimited by a wall and having an opening; a diaphragm having an outer boundary, said diaphragm extending across said opening so that an air gap is provided transversely outwards of the diaphragm between said outer boundary of said diaphragm and said cavity wall; and an actuator configured to adjust a size of said air gap.

Abstract: A vibration direction converter part for speaker device direction converting a vibration of a voice coil supporting part supporting a voice coil, and vibrating a diaphragm in the direction different from the direction of the vibration of the voice coil supporting part, has a rigid link part angle-variably and obliquely disposed between the voice coil supporting part and the diaphragm, and hinge parts formed at both end parts of the link part. The hinge part is formed with a bendable continuous member continuing between both side parts across the hinge part.

Abstract: A micro-electro-mechanical-system microphone package includes a substrate, a micro-electro-mechanical-system microphone chip mounted on the substrate, and a cover attached to the substrate to cover the micro-electro-mechanical-system microphone chip. The cover is provided with a sound inlet through which the micro-electro-mechanical-system microphone receives external sound. The micro-electro-mechanical-system microphone chip includes a conductive base connected to a constant voltage, a shielding layer supported by the conductive base and connected to the constant voltage, a diaphragm disposed between the conductive base and the shielding layer, and a back plate also disposed between the conductive base and the shielding layer.

Abstract: An integrated multifunctional micro speaker including a speaker frame having an upper portion (an outer portion) that is configured by a moving voice coil type speaker and a lower portion (an inner portion) that is configured by a moving magnet and weight type vibrator supported by a suspension, thereby reproducing a sound and a vibration.

Abstract: A tactile sound speaker transmits sound-generated vibrations to a user through a touchpad to provide a tactile sound experience. The tactile sound speaker can include a speaker driver, a speaker cone, and a touchpad. The touchpad can be coupled to the speaker cone by transmission shafts that transmit vibrations generated by the speaker driver's output. A user may experience tactile sound by contacting the touchpad with a hand, foot, or other body part while listening to music or other sound.

Abstract: A timepiece includes a casing having a casing interior having a viewer's side provided with a viewing opening, a base side provided with a sound aperture, and an annular surface surrounding the sound aperture. A membrane extending over the sound aperture closes the base side of the casing interior, the membrane having a circumferential region in sealed connection with the annular surface. A tensioning device maintains the membrane at a desired tension in the radial direction. A vibration generator arranged in the casing interior produces a sound whose frequency can be adjusted by adjusting the tension of the membrane.

Abstract: A mobile communication device includes first and second housing sections movably connected so as to move relative to one another between open and closed positions. The first and second housing sections each include protected surfaces that overlap when the first and second housing sections are in the open position. A distributed mode speaker is disposed on one of the protected surfaces to protect the distributed mode speaker from damage.

Abstract: An exciter for directly vibrating a board treated for dustproofing and heat dissipation, provided with a vibrator comprised of an outer yoke, a permanent magnet, and inner yoke, having a coil fixed inserted between the outer yoke and inner yoke, and having a coupler member for coupling the exciter to the surface of the board. The coupler member and vibrator are connected by an elastic member. A closed space is formed in the exciter by providing a sealing member between the outer yoke and coupler member. A through hole is formed in the outer yoke. Due to the vibration of the vibrator at the time of coil excitation, air convection is caused through the through hole between the closed space and the outside space.

Abstract: An improved driver assembly for a panel loudspeaker includes a retaining element for locating the voice coil with respect to the magnet assembly and forming a surface for removable attachment of the driving assembly to a radiating member. In a preferred embodiment, the retaining element is injection moulded from a hydrogel material with Shore A hardness in the range 0 to 20.

Abstract: A sound vibrator having tuning fork has developed, which is comprising a coil for receiving a sound signal from exterior to generate a magnetic force, a magnet for interacting with the magnetic force generated by the coil, a basket for accommodating the magnet, a face plate for transmitting up-and-down movement of the coil or the magnet to skin, and a tuning fork type band having an end contact to the magnet and the other end contacting to the coil for receiving vibration or sound generated by the magnet and the coil for simultaneously outputting the vibration and sound.

Abstract: A membrane for an electrodynamic sound transducer, particularly a membrane for an AMT loudspeaker, has a meandering shape and is disposed in an air gap between two pole plates. The membrane has a plurality of opposite flanks and a plurality of wave crests and/or wave troughs. In order to avoid parasitic oscillations, at least one supporting element is provided which stabilizes the position and/or the orientation of at least one wave crest and/or wave trough.

Abstract: A speaker apparatus includes a generally cylindrically shaped, hollowed case, a drum membrane at a first end of the case; and an electrically powered speaker at a second end of the case. The speaker is preferably positioned to emit sound primarily away from the drum membrane. The drum membrane is preferably tunable, using a plurality of circumferentially positioned drum tuners.

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: The present invention relates to a sound output device, method and program, and room capable of producing sounds from individual parts in a wide range of a vibrating member by appropriately vibrating the parts. A vibrating member 26A vibrates to thereby output sounds. A vibrator 27A is mounted to the vibrating member 26A, and vibrates the vibrating member 26A based on a first sound signal. A vibrating member 27B is mounted to the vibrating plate 26A such that a given space is formed between the vibrator 27A and the vibrating member 27B. The vibrating member 27B vibrates the vibrating member 26A based on a second sound signal to thereby appropriately vibrate individual parts of a wide range of the vibrating member 26A. Sounds can be produced from the individual parts. The present invention can be applied to a sound output device and to a room.

Abstract: An alerting system (202) for a communication device (100) is provided. The alerting system is designed to operate in a plurality of operating modes. The alerting system includes a transducer (204) and an electromechanical switch (106). The transducer transforms electrical impulses into vibrations. The electromechanical switch couples the transducer to a first component (206) of the communication device in a first operating mode. Further, the electromechanical switch couples the transducers to a second component (208) of the communication device in a second operating mode.

Abstract: An audio output apparatus is provided. The audio output apparatus includes: a vibration member, a vibrator, a vibrator positioning unit, and a vibrator-depth positioning unit. The vibration member vibrates to output a sound. The vibrator is in contact with the vibration member and detachably attached thereto to allow the vibration member to vibrate in response to an input audio signal. The vibrator positioning unit controls a contact position between the vibrator and the vibration member. The vibrator-depth positioning unit adjusts a position of the vibrator in the direction of being pressed against the vibration member and brought into contact with the vibration member.

Abstract: An object of the present invention is to provide an electroacoustic transducer having a multi-channel diaphragm, and a hearing aid using the electroacoustic transducer, in which a plurality of channels having different resonant frequencies is formed in the diaphragm using MEMS technology, thus more closely approximating the different audible frequency characteristics of respective persons. The present invention provides an electroacoustic transducer provided with a multi-channel diaphragm. The electroacoustic transducer includes a diaphragm (110) and signal conversion units (120). The diaphragm is provided with respective channels having different resonant frequencies.

Abstract: A portable device having a user input consisting of a single touch sensitive area is disclosed. The user input is arranged to output a signal responsive to force applied to the touch sensitive area. The device further has a controller arranged to discriminate one of a plurality of levels of said signal for provision of a corresponding control signal. The control signal can be used for controlling operation of the portable device. A method of operating the portable device, and a computer program for implementing the method are also disclosed.