Patents
Sitemap › H04 - Electric communication technique › H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; Deaf-aid sets; Public address systems › H04R 3 - Circuits for transducers
Patents for H04R 3 - Circuits for transducers (18,190)
12/2007
12/06/2007WO2007139040A1 Speech situation data creating device, speech situation visualizing device, speech situation data editing device, speech data reproducing device, and speech communication system
12/06/2007WO2007138985A1 Discharging/collecting voice device and control method for discharging/collecting voice device
12/06/2007WO2007138878A1 Voice conference device
12/06/2007WO2007138782A1 Group call device
12/06/2007US20070280487 Howling Detection Method, Device, And Acoustic Device Using The Same
12/06/2007US20070280486 Vehicle communication system
12/06/2007CA2653598A1 Sound emission and collection apparatus and control method of sound emission and collection apparatus
12/05/2007CN200987216Y Microphone using frequency modulation system
12/05/2007CN200987145Y Audio power amplifier
12/05/2007CN200986815Y Footplate type MP3 player
12/05/2007CN200986697Y Microphone device for recording of USB interface
12/04/2007US7305095 System and process for locating a speaker using 360 degree sound source localization
11/2007
11/29/2007WO2007135679A2 Volume and tone control in direct digital speakers
11/29/2007WO2007135678A2 Direct digital speaker apparatus having a desired directivity pattern
11/29/2007WO2007135230A1 Speaker and integrated antenna module
11/29/2007US20070274538 Audio signal enhancement
11/29/2007US20070274534 Audio recording system
11/29/2007US20070274533 Microphone system for the fueling environment
11/29/2007US20070274531 Sound pressure monitor
11/29/2007US20070273790 Television apparatus
11/29/2007DE10340367B4 Verfahren und Vorrichtung zur Verbesserung des Schalldruckpegels eines Schallgebers Method and device for improving the sound pressure level of a sound generator
11/29/2007DE102006042059A1 Audio collecting device, has probability value specifying unit for specifying probability value, which is indicative for probability of existence of audio source in pre-determined direction
11/28/2007EP1860911A1 System and method for improving communication in a room
11/28/2007EP1025744B2 Hearing aid comprising an array of microphones
11/28/2007CN200983673Y A motorcycle sound system
11/28/2007CN101080946A Speaker diagnostics based upon driving-point impedance
11/28/2007CN101080108A Microphone circuit
11/28/2007CN101079602A Automatic input-gain control circuit and method thereof
11/28/2007CN101079252A Vehicle mounted display apparatus and sound controlling method
11/27/2007US7302070 Oscillation detection
11/27/2007US7302063 Audio system for an automobile
11/27/2007US7301647 Method for regulating shape of floatation surface of slider floating above record carrier
11/22/2007WO2007132422A1 Capacitive mems sensor device
11/22/2007WO2007132362A2 Method and apparatus for characterizing a welding output circuit path
11/22/2007WO2007132176A1 Wind noise rejection apparatus
11/22/2007WO2007131628A1 Audio mixing
11/22/2007US20070269060 Structure and Method of Condenser Microphone Device for Skin-Contact Usage
11/22/2007US20070269058 Microphone circuit
11/22/2007US20070269055 Feedback System for a Multiple Element Loudspeaker
11/22/2007US20070269039 Method and apparatus for active reduction of speakerphone singing
11/22/2007DE102006023723A1 Hörvorrichtung mit Rückkopplungsdetektion und entsprechendes Verfahren Hearing device with feedback detection and corresponding method
11/21/2007EP1858295A1 Equalization in acoustic signal processing
11/21/2007EP1858289A1 Hearing device with feedback detection and corresponding method
11/21/2007CN200980160Y A switcher for earphone and sound box
11/21/2007CN101076204A Hearing aid equipment with feedback detection and corresponding method
11/21/2007CN100350741C Dynamic allocation of power supplied by a power supply and frequency agile spectral filtering of signals
11/21/2007CN100350257C Potential fixing device, potential fixing method, and capacitance measuring instrument
11/20/2007US7298856 Chip microphone and method of making same
11/20/2007US7298853 Parametric virtual speaker and surround-sound system
11/20/2007US7297118 Ultrasound method and apparatus for multi-line acquisition
11/15/2007WO2007130999A2 Detectable and trackable hand-held controller
11/15/2007WO2007130872A2 Method and apparatus for use in determining lack of user activity, determining an activity level of a user, and/or adding a new player in relation to a system
11/15/2007WO2007130833A2 Scheme for detecting and tracking user manipulation of a game controller body and for translating movements thereof into inputs and game commands
11/15/2007WO2007130819A2 Tracking device with sound emitter for use in obtaining information for controlling game program execution
11/15/2007WO2007130793A2 Obtaining input for controlling execution of a game program
11/15/2007WO2007130792A2 System, method, and apparatus for three-dimensional input control
11/15/2007WO2007130791A2 Multi-input game control mixer
11/15/2007WO2007130766A2 Narrow band noise reduction for speech enhancement
11/15/2007WO2007130765A2 Echo and noise cancellation
11/15/2007WO2007130582A2 Computer imput device having gearing effects
11/15/2007WO2007130341A2 Normalization and calibration of microphones in sound- intensity probes
11/15/2007WO2007129731A1 Sound source tracking system, method and robot
11/15/2007WO2007129627A1 Damper for automobiles for reducing vibration of automobile body
11/15/2007WO2007129003A1 Digital circuit arrangements for ambient noise-reduction
11/15/2007US20070263883 Automatic transformer saturation compensation circuit
11/15/2007US20070263881 Method and apparatus for locating a talker
11/15/2007US20070263878 Sound mask and sound box
11/15/2007DE102006020832A1 Verfahren zum Unterdrücken von Rückkopplungen und zur Spektralerweiterung bei Hörvorrichtungen A method for suppressing feedback and spectral widening in hearing devices
11/14/2007EP1855506A2 Method and apparatus to direct sound using an array of output transducers
11/14/2007EP1855455A1 Audio mixing
11/14/2007EP1854329A1 Microphone comprising an output signal amplifier
11/14/2007EP1854094A2 Methods and systems for intelligibility measurement of audio announcement systems
11/14/2007EP1684466B1 Power saving and handling broadcast as unicast traffic in a WLAN
11/14/2007EP0843934B1 Arrangement for suppressing an interfering component of an input signal
11/14/2007CN200976669Y Earphone output circuit and television set having the same
11/14/2007CN200976668Y Wire control volume controller
11/14/2007CN200976667Y Bluetooth earphone having noise-eliminating function
11/14/2007CN101073287A Device and method for attenuating an anti-resonant circuit
11/13/2007US7295976 Voice activity detector for telephone
11/13/2007US7295675 Phantom powered capacitor microphone and a method of using a vacuum tube in the same
11/13/2007US7295670 Howling suppression device and howling suppression method
11/08/2007WO2007126705A2 Speakerphone with downfiring speaker and directional microphones
11/08/2007WO2007126054A1 Signal separating device, signal separating method, information recording medium, and program
11/08/2007WO2007106399A3 Noise-reducing directional microphone array
11/08/2007WO2006094399A3 Sound filtering system for gaming environments
11/08/2007US20070258579 Multi-channel echo cancel method, multi-channel sound transfer method, stereo echo canceller, stereo sound transfer apparatus and transfer function calculation apparatus
11/08/2007US20070258578 Multi-channel echo cancel method, multi-channel sound transfer method, stereo echo canceller, stereo sound transfer apparatus and transfer function calculation apparatus
11/07/2007EP1853089A2 Method for elimination of feedback and for spectral expansion in hearing aids
11/07/2007EP1853087A1 Echo canceler
11/07/2007EP1853086A1 A/v amplifier and method for driving the same
11/07/2007EP1851992A2 Method and apparatus for ambient sound therapy user interface and control system
11/07/2007EP1851656A2 System and method for formatting multimode sound content and metadata
11/07/2007EP1723825B1 Apparatus and method for controlling a wave field synthesis rendering device
11/07/2007CN200972789Y Flash disk SD card/MMC card/MP3 player
11/07/2007CN101068445A High frequency compensating
11/06/2007US7292833 Reception system for multisensor antenna
11/06/2007US7292696 Electret capacitor microphone
11/01/2007WO2007123172A1 Acoustic reproduction device
11/01/2007WO2007123052A1 Adaptive array control device, method, program, adaptive array processing device, method, program
11/01/2007WO2007123051A1 Adaptive array controlling device, method, program, and adaptive array processing device, method, program
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