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)
05/2005
05/06/2005WO2005041618A1 Adaptive sound reproduction
05/06/2005WO2005041615A1 Method and communication device with means for interference suppression in audio signals
05/05/2005US20050096915 Contents reproducing system and contents reproducing program
05/05/2005US20050096544 Method and apparatus for single transmission Golay coded excitation
05/05/2005US20050094830 Current feedback system for improving crossover frequency response
05/05/2005US20050094829 System and method for achieving extended low-frequency response in a loudspeaker system
05/05/2005US20050094828 Bass boost circuit
05/05/2005US20050094827 Feedback suppression in sound signal processing using frequency translation
05/05/2005US20050092163 Parameter control method and program therefor, and parameter setting apparatus
05/04/2005EP1528734A1 Delay control in a data communication system
05/04/2005EP1528719A1 Data output device, data transmitting device, data processing system, data output method, data transmitting method, data processing method, their programs and recording media storing these programs
05/04/2005EP1528701A2 Parameter display method and program therefor, and parameter setting apparatus
05/04/2005EP1527654A2 Electroacoustic transducer with built in transducer circuit
05/04/2005EP1464048A4 Translation device with planar microphone array
05/04/2005CN1612644A Parameter control method and program therefor, and parameter setting apparatus
05/04/2005CN1612643A Parameter display method and program therefor, and parameter setting apparatus
05/04/2005CN1612640A Adaptive feedback canceller
05/04/2005CN1612469A Bass boost circuit
05/03/2005US6888058 Electronic musical instrument
05/03/2005US6886658 Loudspeaker enclosure system
04/2005
04/30/2005CA2729742A1 Switched resonant ultrasonic power amplifier system
04/28/2005WO2005039041A1 Microphone preamplifier
04/28/2005WO2005022951A3 Audio input system
04/28/2005WO2004027827A3 Integrated circuit with automatic polarity detection and configuration
04/28/2005US20050091043 Acoustic signal processor
04/28/2005US20050090913 Parameter display method and program therefor, and parameter setting apparatus
04/28/2005US20050090295 Communication headset with signal processing capability
04/28/2005US20050089182 Compact surround-sound system
04/28/2005US20050089180 Electret capacitor microphone
04/28/2005US20050089178 Signal converter, output amplifying device, audio apparatus, and transmitting and receiving system
04/28/2005US20050089176 Parametric loudspeaker with improved phase characteristics
04/27/2005EP1526758A2 A 5.1 channel signal output mixer circuit for earphone
04/27/2005EP1526756A2 Microphone apparatus, reproducing apparatus, and image taking apparatus
04/27/2005EP1526755A2 Detecting acoustic echoes using microphone arrays
04/27/2005EP1526639A2 Voice enhancement system
04/27/2005CN1610449A Microphone apparatus, reproducing apparatus, and image taking apparatus
04/27/2005CN1199518C Method for processing an audio signal
04/21/2005WO2005036922A1 Communication headset with signal processing capability
04/21/2005WO2005036921A2 Parametric loudspeaker system for isolated listening
04/21/2005US20050085185 Method and apparatus for focusing sound
04/21/2005US20050084116 Detecting acoustic echoes using microphone arrays
04/21/2005CA2542622A1 Communication headset with signal processing capability
04/20/2005EP1524879A1 Handsfree system for use in a vehicle
04/20/2005CN1608393A High efficiency driver for miniature loudspeakers
04/20/2005CN1608351A Device and method for carrying out multichannel acoustic echo cancellation with a variable number of channels
04/20/2005CN1607865A Acoustic apparatus and acoustic setting method
04/20/2005CN1607864A Content reproducing system and method
04/20/2005CN1198480C Acoustic device
04/19/2005US6882734 Vehicle accessory microphone
04/19/2005US6882222 Low pass filter for output of D-class amplifier
04/14/2005US20050080500 Audio device and playback method in audio device
04/14/2005US20050078839 Sound reproducing apparatus and sound reproducing method
04/14/2005US20050078556 Method for directional location and locating system
04/14/2005DE10313330B4 Verfahren zur Unterdrückung mindestens eines akustischen Störsignals und Vorrichtung zur Durchführung des Verfahrens A method for suppressing the interfering signal and at least one acoustic device for carrying out the method
04/14/2005CA2540708A1 Noise canceling microphone with acoustically tuned ports
04/13/2005EP1523221A2 System and method for audio system configuration
04/13/2005EP1522207A1 Electronic devices, methods of operating the same, and computer program products for detecting noise in a signal based on a combination of spatial correlation and time correlation
04/13/2005EP1208721A4 Improved crossover filters and method
04/13/2005CN2692917Y Multiple circuit safety digital mixer system
04/13/2005CN1606383A Equalizing circuit
04/13/2005CN1606382A Communication apparatus
04/13/2005CN1196446C Ultrasonic image coherent filtering method and device
04/07/2005WO2005032213A1 Acoustic characteristic correction system
04/07/2005WO2005032208A1 Loudspeaker sensitive sound reproduction
04/07/2005WO2005032207A1 Directional loudspeaker control system
04/07/2005WO2005017877A3 Device and method for the generation, storage or processing of an audio representation of an audio scene
04/07/2005US20050074133 Equalizing circuit amplifying bass range signal
04/07/2005US20050074129 Cardioid beam with a desired null based acoustic devices, systems and methods
04/07/2005US20050074128 Hearing system
04/07/2005US20050073782 Sound control circuit for a digital audiovisual reproduction system
04/06/2005EP1520395A2 Stationary spectral power dependent audio enhancement system
04/06/2005EP1520362A1 Wireless audio signal transmission method for a three-dimensional sound system
04/06/2005CN2691200Y Digital speaker
04/06/2005CN1605225A Method and apparatus to create a sound field
04/06/2005CN1605186A Echo canceller having spectral echo tail estimator
04/06/2005CN1604010A Electronic apparatus capable of always executing noise canceling and voice input method for the apparatus
04/06/2005CN1603859A Ultrasonic sensor
04/05/2005US6876749 Microphone for hearing aid and communications applications having switchable polar and frequency response characteristics
03/2005
03/31/2005WO2005029908A2 Loudspeaker with single or dual channel input selector and lockout
03/31/2005WO2005029853A1 Data conversion system
03/31/2005WO2004082321A3 Multi-channel digital feedback reducer system
03/31/2005US20050070243 Multichannel echo canceller system using active audio matrix coefficients
03/31/2005US20050069150 Loudspeaker system
03/31/2005US20050069149 Electronic apparatus capable of always executing proper noise canceling regardless of display screen state, and voice input method for the apparatus
03/30/2005EP1519627A2 Sound reproducing apparatus and sound reproducing method
03/30/2005EP1519619A1 Loudspeaker sensitive sound reproduction
03/30/2005EP1519618A1 Method and communication equipment with means for audio signals interference suppression
03/30/2005EP1518442A1 Piezoelectric biological sounds monitor with printed circuit board
03/30/2005EP1518441A1 Device and method for suppressing a feedback
03/30/2005EP1518394A1 Echo processing devices for single-channel or multichannel communication systems
03/30/2005EP1518180A2 Identification system and method for recognizing any one of a number of different types of devices
03/30/2005CN2689635Y Capacitor microphones
03/30/2005CN1602649A Signal processing device for acoustic transducer array
03/30/2005CN1602583A Communication device with active equalization and method therefor
03/30/2005CN1602116A Microphone apparatus, noise reduction method and recording apparatus
03/30/2005CN1602076A Converter and method with hybrid RGB chart and YUV video signal
03/30/2005CN1602037A Radio earphone with built-in mobile communicating module and its dialing/receiving method
03/30/2005CN1601665A Inductance coil and divider applied for speaker
03/29/2005US6873709 Method and apparatus for filtering and compressing sound signals
03/29/2005US6873708 Method and apparatus to simulate rotational sound
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