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7605686 |
Alerting system for a communication device
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 (...
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7561704 |
Structure of speaker
A speaker, which includes a basket holding an exciter, a holding down ring fastened to the basket to hold down a diaphragm, which has an annular suspension and a cone fastened to the inner diameter...
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7522742 |
Speaker assembly with moveable baffle
A speaker assembly includes a housing that can be attached to a wall. Audio speakers are mounted in a baffle that is mounted in and movable relative to the housing, so that the direction of audio...
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7447322 |
Speaker having a transparent panel
A speaker having a transparent sound panel and an exciter connected to the transparent sound panel for converting electrical energy received by the exciter, into vibrations that are transmitted to...
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7317804 |
Sound collecting device minimizing electrical noise
A sound collecting device is provided which is designed to minimize adverse effects on an output caused by exposure of an electroacoustic transducer to the air. The device includes an...
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7306073 |
Electroacoustic transducer comprising a membrane with a middle area comprising stiffening grooves
A membrane ( 20 ) has a membrane axis ( 5 ) and a middle area ( 50 ), a central cup-shaped depression ( 52 ) being provided around said membrane axis ( 5 ), which depression ( 52 ) preferably has a...
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7302068 |
Loudspeaker
A loudspeaker for audible sound is described having a sound emitting element mounted onto a support structure and at least one actuator adapted to rotate said sound emitting element around a hinge...
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7174025 |
Resonant panel-form loudspeaker
A loudspeaker assembly comprising a visual display screen, a resonant panel-form member positioned adjacent to the display screen, and a vibration exciter to cause the panel-form member to resonate...
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7082668 |
Electro-acoustic transducer having vibrating function and method of manufacturing the same
A mechanical resonance frequency of a vibration section of an electro-acoustic transducer having a vibrating function is measured during an assembly process, and is compared with a predetermined...
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7085392 |
Loudspeaker sound modulation appliance
In combination with a loudspeaker assembly that includes a speaker diaphragm that is displaced to produce sound, the combination comprising a spinner element mounted to rotate in the path of sound...
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7020295 |
Piezoelectric electroacoustic transducer and manufacturing method of the same
A piezoelectric electroacoustic transducer includes a substantially rectangular piezoelectric diaphragm having electrodes and flexurally vibrating in response to application of an alternating...
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6985593 |
Baffle vibration reducing
A vibration reducing apparatus comprising, a baffle subject to vibration, a first electroacoustical transducer characterized by a first mass seated in the baffle, a second electromechanical...
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6978031 |
Loudspeaker sound modulation apparatus
A loudspeaker assembly includes a speaker diaphragm that is displaced to produce sound, and a spinner element mounted to rotate in the path of sound waves produced by the speaker diaphragm, the...
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6834114 |
Multifunction acoustic device
A rotor having a yoke is rotatably supported in a frame, and a stator provided in the frame at a central portion of the frame. An annular first permanent magnet is provided on the yoke, and an...
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6807284 |
Speaker and speaker device
A speaker has a very small size and is arranged to emit sound waves in a non-directional manner. The speaker includes a case and a speaker unit attached to a plate provided at an opening of the...
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6798888 |
Mount for underwater acoustic projector
A mount for acoustic transducers has a resilient sheet with a plurality of mounting apertures therein. Each mounting aperture has an annular groove formed about the inside surface of the sheet to...
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6751329 |
Loudspeaker driver
A drive module for attachment to a rigid panel and adapted to apply bending wave energy at audio frequencies to the panel whereby the panel can radiate an audio output. The drive module has a...
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6739425 |
Evacuated enclosure mounted acoustic actuator and passive attenuator
This invention presents a novel means to passively achieve a compact moving-coil actuator with a very low natural frequency. The diaphragm and voice coil are mounted in a sealed enclosure from...
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6590993 |
Panel-shaped loudspeaker
A panel-shaped loudspeaker includes a panel ( 1 ) and an exciter coupled to the panel. The panel is provided with two parallel extending thin walls ( 1 a, 1 b ) which are interconnected by a...
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6522759 |
Speaker
A reduced-size speaker for generating sound waves in wide low frequency audio region includes a cylindrical main body which is open at the top and bottom surfaces, a top lid being provided on the...
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6438242 |
Acoustic transducer panel
An electro-acoustic transducer in which a plurality of cymbal-type electro-acoustic actuators are disposed in mechanical and electrical parallel between a pair of stiff plates. The resultant...
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6411719 |
Loudspeaker assembly
A loudspeaker assembly for use in electronic devices especially hand held communication devices e.g. a cellular mobile telephone, comprising a loudspeaker ( 12 ) for emitting sound through a front...
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6298140 |
Electroacoustic transducer with improved tonal quality
An electroacoustic transducer with attenuated effective output irregularities caused by intrinsic normal modes of oscillation. What stands out, as a structural property of a preferred embodiment,...
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6198831 |
Panel-form loudspeakers
A panel form loudspeaker/microphone combination has a distributed resonant bending wave member and two transducers mounred on the member at sites where the number of vibrationally active resonance...
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6108433 |
Method and apparatus for a magnetically induced speaker diaphragm
An ultrasonic emitter device having broad frequency range capacity with relatively large diaphragm displacement compared to typical electrostatic diaphragm movement. The device includes a core...
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5995635 |
Sound pickup and amplifier apparatus for vibrating strings
An apparatus to pick up and amplify sounds created by vibrations of a flexible member having a base which supports a sound pick up that transmits a signal to an amplifier. The apparatus is attached...
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5802189 |
Subwoofer speaker system
The present invention provides for an electromechanical transducer for producing sound in response to an audio signal. The transducer has a generally rectangular enclosure, a diaphragm, a cylinder,...
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5442710 |
Body-felt sound unit and vibration transmitting method therefor
A body-felt sound unit having a vibration transmitting member imbedded in a human body support member, for example, a chair, a bed, etc., and an electro-mechanical vibration transducer attached to...
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5282858 |
Hermetically sealed implantable transducer
A hermetically sealed acoustic mechanism for an implantable hearing aid system having a signal processing unit having at least one electromechanical transducer coupled to the auditory system of a...
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5255321 |
Acoustic transducer for automotive noise cancellation
An acoustic transducer is disclosed for incorporation into an engine exhaust system or other gas carrying duct. The transducer produces pressure variations within the duct in accordance with an...
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5251188 |
Elongated-pattern sonic transducer
A sonic transducer (10) includes an elongated diaphragm (12) secured to a base (14) by a clamping member (16). The shapes of the surfaces (26, 30) by which the base (14) and clamping element (16)...
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5137110 |
Highly directional sound projector and receiver apparatus
An acoustic apparatus (10) adapted for use as either a sound projector or a ound receiver. The apparatus (10) comprises a bundle (20) of individual sound tubes (21, 22) disposed in a tube array...
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5125031 |
Speaker system with focused vibration
A loud speaker vibration transmitting apparatus has a speaker housing which encloses a speaker cone which vibrates within the housing and a propagation member which has a first contact end in...
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4967871 |
Body-sensible acoustic device
A body-sensible acoustic device and an electromechanical vibration converter for use in the same. The body-sensible acoustic device includes frames forming the structure of a chair having a seat...
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4961227 |
Portable loud speaker system
A portable speaker having a speaker housing which vibrates in harmony with the audible sounds generated by the speaker. The speaker includes a loud speaker housing having a surface capable of...
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4951270 |
Audio transducer apparatus
Transducer apparatus includes a two-part housing having a rear boss for securing the transducer to a wall. Within the housing are two magnetic elements for providing an output in response to...
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4821330 |
Wide-band loudspeaker having a diaphragm area divided into sub-areas for various frequency ranges
The invention relates to a wide-band loudspeaker in which the overall diaphragm is divided into an inner and an outer diaphragm sub-area. The inner diaphragm sub-area preferably consists of a...
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4817168 |
Directional microphone
A directional microphone operating according to the electrostatic or electrodynamic transducer principle. The pickup effect of the microphone is determined by a single phase-shifting delay line...
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4750208 |
Audio-band electromechanical vibration converter
Audio-band electromechanical vibration converter characterized in that a yoke having a permanent magnet and a magnetic gap formed therein is displaceably housed by a damper in a casing to which a...
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4564727 |
Subwoofer speaker system
A method and apparatus for producing low frequency sound (20 to 100 Hz) at levels of intensity above the minimum threshold of human hearing. A mechanical-electrical drive having high power capacity...
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4547631 |
Large-excursion electroacoustic transducer
An electroacoustic transducer comprises a diaphragm (1), a magnet system (4) and a voice coil (3) arranged on a voice-coil former (2) in an air gap (5) of the magnet system. The movement is...
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4520238 |
Pickup device for picking up vibration transmitted through bones
A pickup device for picking up sound generated by the vocal chords and transmitted through bones from the nasal bone. A microphone (11) is mounted on or embedded into an eyeglass-like assembly (13,...
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4517416 |
Electro-acoustic transducer having a diaphragm comprising a layer of polymethacrylimide foam
An electro-acoustic transducer has a diaphragm which comprises a layer of a polymethacrylimide foam having a modulus of elasticity between 15×10 6 and 120×10 6 N/m 2 and a density between 10...
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4506117 |
Electroacoustic transducer
The electroacoustic transducer comprises an oscillating element (6, 7) holding a coil (8), the oscillating element (6, 7) being connected to a magnet frame (11-17) by an elastomer ring (10'). The...
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4495641 |
Microphone pickup for musical instruments
An audio pickup for musical instruments employing a condenser-type microphone mounted on a suction cup which is pressed against the sounding board or the like of the instrument.
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4431873 |
Diaphragm design for a bender type acoustic sensor
An omnidirectional acoustic sensor has an air-backed diaphragm in a unit which has a central axis and is mounted so as to be responsive to acoustic pressure waves. A piezoelectric ceramic disc is...
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4387275 |
Speaker and speaker system
A speaker in which a voice coil bobbin (4) is connected through a mechanical filter to vibrating members (11, 14) for limiting the reproducing frequency band in predetermined range by the...
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4246447 |
Piezoelectric transducer drive
A stack of piezoelectric discs for driving the diaphragm of a transducer such as a loudspeaker. The discs are arranged in pairs with the outer edges of each pair supported by engagement with an...
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4232205 |
Microphone mount
The built-in microphone of portable sound recorders or the like is mounted to the interior of the cabinet wall by means of a fixture which includes an intermediate member that holds the microphone...
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4204096 |
Sonic transducer mounting
A sonic transducer incorporating a rigid plate-like transmitting member coupled to electromechanical compression wave generating means such as a piezoelectric crystal for transmitting sonic energy...
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