Class 381/170 - Compound

Subclass of Class 381 - Electrical audio signal processing systems and devices
Definition: Subject matter having a plurality of independent microphone
No. of patents: 26
Last issue date: 04/03/2012

Number	Title	Issue Date
8150077	Microphone To obtain a composite type microphone, the microphone preventing an increase in size and weight and thereby improving the freedom for installation and handling while keeping the phases of signals output from respective microphone units the same. A composite type mic...	04/03/2012
7434305	Method of manufacturing a microphone A silicon condenser microphone package is disclosed. The silicon condenser microphone package comprises a transducer unit, substrate, and a cover. The substrate includes an upper surface having a recess formed therein. The transducer unit is attached to the upper su...	10/14/2008
7433478	Microphone pick-up device A microphone pick-up device includes an air chamber unit disposed posteriorly of an annular cap body. A pick-up unit generates an acoustic signal in response to detected sound, and includes a yoke mounted in a front portion of the cap body, a voice coil disposed aro...	10/07/2008
7366310	Microphone array diffracting structure The present invention increases the aperture size of a microphone array by introducing a diffracting structure into the interior of a microphone array. The diffracting structure within the array modifies both the amplitude and phase of the acoustic signal reaching t...	04/29/2008
7214179	Low acceleration sensitivity microphone An implanted microphone is provided that has reduced sensitivity to vibration and attendant acceleration forces. In this regard, the microphone differentiates between the desirable and undesirable components of a transcutaneously received signal. More specifically, ...	05/08/2007
7204799	Microphone optimized for implant use An implantable microphone for use with an implantable hearing instrument that has a reduced vibration sensitivity in comparison with its acoustic sensitivity. The microphone utilizes a plurality of small diaphragms as opposed to a single large diaphragm in order to ...	04/17/2007
7162041	Noise canceling microphone with acoustically tuned ports Certain embodiments of a noise canceling microphone with acoustically tuned ports are disclosed herein. In one aspect of the invention, the noise canceling microphone may comprise a housing, a transducer for converting received energy received into electrical signal...	01/09/2007
6829814	Process of making an all-silicon microphone A process of forming a capacitive audio transducer, preferably having an all-silicon monolithic construction that includes capacitive plates defined by doped single-crystal silicon layers. The capacitive plates are defined by etching the single-crystal silicon layer...	12/14/2004
6459798	Sound-collecting device A device for collecting sounds from objects comprises a plurality of microphones whose directivity can be varied depending on the environment in which each object is located. An optical microphone includes a vibration board (2) which vibrates by sound pre...	10/01/2002
6091828	Dynamic microphone A vibration detecting unit is arranged in an air chamber in communication with a microphone unit and changes in pressure in the air chamber caused by the vibrations of a diaphragm of the vibration detecting unit is transmitted to the back surface side of ...	07/18/2000
6014239	Optical microphone An optical microphone includes a laser and beam splitter cooperating therewith for splitting a laser beam into a reference beam and a signal beam. A reflecting sensor receives the signal beam and reflects it in a plurality of reflections through sound pre...	01/11/2000
5745588	Differential microphone assembly with passive suppression of resonances An improved, single diaphragm SOD microphone uses acoustic filters to remove resonances associated with the ducting that guides the ambient sound pressure to the front and rear faces of a FOD microphone element. The microphone element communicates with re...	04/28/1998
5651074	Noise canceling gradient microphone assembly An improved Broadside SOG microphone assembly is realized by employing a microphone assembly having at least three ports arranged in a non-colinear fashion with the at least three ports defining and being in a "gradient" plane and with both outer adjacent...	07/22/1997
5539834	Baffled microphone assembly A second-order differential (SOD) microphone includes a first-order differential (FOD) microphone element installed in a housing. A pair of front sound conduits extend from respective ports to a chamber on the front side of the microphone diaphragm, and a...	07/23/1996
5511130	Single diaphragm second order differential microphone assembly A second-order differential (SOD) microphone includes a first-order differential (FOD) microphone element installed in a housing. A pair of front sound conduits extend from respective ports to a chamber on the front side of the microphone diaphragm, and a...	04/23/1996
5363452	Microphone for use in a vibrating environment A microphone for use in a harsh environment of intense vibration and sound pressure. A microphone transducer and an acceleration transducer are located adjacent each other inside of a housing. The microphone transducer substantially blocks much of the aco...	11/08/1994
5029215	Automatic calibrating apparatus and method for second-order gradient microphone An automatic calibration system for a second-order gradient microphone is provided to ensure optimum sensitivity balance between a pair of first-order gradient microphones mounted in a housing and forming the second-order gradient microphone. Automatic ca...	07/02/1991
4947437	Stereo microphone A stereo microphone that delivers "Right" and "Left" output signals from the sound field at a single point in space. A small, light, ball-like sound-sensing element is loosely suspended so that it is free to move in any direction in a plane. Directional c...	08/07/1990
4888807	Variable pattern microphone system A microphone system including a plurality of sound transducers integrally contained in a single microphone housing, wherein each transducer has a different polar pick-up pattern. The system includes a remote combiner for the symmetrical addition of the ou...	12/19/1989
4447678	Electracoustic transducer An electroacoustic two-way transducer assembly particularly for headphones and microphones comprises an electrostatic treble system having an electrostatic treble system disphragm and an electrodynamic system disposed under said electrostatic treble syste...	05/08/1984
4442323	Microphone with vibration cancellation A microphone unit particularly adapted to be used as a built-in microphone for a device such as a tape recorder in which vibration-induced components in the output of the microphone are substantially eliminated. An electret-type microphone element is moun...	04/10/1984
4420655	Circuit to compensate for deficit of output characteristics of a microphone by output characteristics of associated other microphones A circuit for compensating for frequency characteristic of microphone output which is arranged to have a combination of a microphone member of the pressure gradient type having a proximity effect represented by a rise in its low frequency range sensitivit...	12/13/1983
4414433	Microphone output transmission circuit A microphone output transmission circuit for a capactive microphone such as an electret microphone employs a differential amplifier to provide a transformerless balanced connection to a microphone transmission line, either at the transmission end or at th...	11/08/1983
4249043	Electret transducer backplate, electret transducer and method of making an electret transducer An electret transducer backplate is made of a thermo-softening plastics material rendered electrically conducting by electrically conducting particles distributed therethrough. An electret foil diaphragm is mounted on the backplate and the relative flexur...	02/03/1981
4127749	Microphone capable of cancelling mechanical generated noise A microphone comprises a pair of electroacoustic transducing high polymer piezoelectric semi cylindrical shaped membranes having a single axis of elongation tangent to the curvature mounted in a housing facing each other. The membranes are electrically se...	11/28/1978
4037052	Sound pickup assembly A sound pickup assembly comprising a parabolic reflector in the focal point of which is mounted a pickup and wherein the reverse side of the parabolic reflector is formed as a binaural sound pickup having a pair of microphones mounted on opposite sides of...	07/19/1977

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Class 381/170 - Compound