| Patents for H04R 3 - Circuits for transducers (18,190) |
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| 02/17/2005 | US20050036634 Clip state display method, clip state display apparatus, and clip state display program |
| 02/17/2005 | US20050036629 Method and device for the interference elimination of a redundant acoustic signal |
| 02/17/2005 | US20050036271 Sensor capacity sensing apparatus and sensor capacity sensing method |
| 02/16/2005 | EP1507439A2 Apparatus and method for controlling speakers |
| 02/16/2005 | EP1507349A2 Clip state display method and apparatus |
| 02/16/2005 | CN1582602A Bass frequency amplifying apparatus |
| 02/16/2005 | CN1582066A Clip state display method and clip state display apparatus |
| 02/16/2005 | CN1582060A Dodecahedral speaker system |
| 02/16/2005 | CN1190107C Piezoelectric film sonic emitter |
| 02/15/2005 | US6856577 Method and apparatus for forming a reception beam |
| 02/10/2005 | US20050033786 Device and method for filtering electrical signals, in particular acoustic signals |
| 02/10/2005 | US20050031149 Echo-eliminating microphone |
| 02/10/2005 | US20050031141 Timer ramp-up circuit and method for a sound masking system |
| 02/10/2005 | US20050031140 Position detection of an actuator using a capacitance measurement |
| 02/10/2005 | US20050031139 Position detection of an actuator using impedance |
| 02/10/2005 | US20050031138 Method of measuring a cant of an actuator |
| 02/10/2005 | US20050031136 Noise canceling microphone system and method for designing the same |
| 02/10/2005 | US20050031133 Process for position indication |
| 02/10/2005 | US20050031132 Control system |
| 02/10/2005 | US20050031131 Method of modifying dynamics of a system |
| 02/10/2005 | US20050030679 Potential fixing device and potential fixing method |
| 02/10/2005 | CA2736342A1 System and method of safe and automatic acoustic volume adjustment for handsfree operation |
| 02/09/2005 | EP1505852A1 Piezoelectric speaker, speaker system employing it, and electronic apparatus employing piezoelectric speaker |
| 02/09/2005 | EP1505828A2 Information output control system, information output control method, and information output control program |
| 02/09/2005 | EP1505802A1 Handheld device having an auto-volume control means for earphone plugging and controlling method thereof |
| 02/09/2005 | EP1368936B1 Vehicle audio system |
| 02/09/2005 | EP1216598B1 Audio signal processing |
| 02/09/2005 | CN2678297Y Voice transmission device without microphone |
| 02/09/2005 | CN2678293Y Toning handle for 8-position loudspeakers |
| 02/09/2005 | CN1578536A Supplying electrical power |
| 02/09/2005 | CN1578535A Line array electroacoustical transducing |
| 02/08/2005 | US6854005 Crossover filter system and method |
| 02/08/2005 | US6853733 Two-wire interface for digital microphones |
| 02/08/2005 | US6851952 Karaoke device with built-in microphone and microphone therefor |
| 02/04/2005 | CA2436624A1 Timer ramp-up circuit and method for a sound masking system |
| 02/03/2005 | WO2005011327A1 Howling margin measuring device |
| 02/03/2005 | WO2005011323A2 Self-adjustment of acoustic and light amplitudes |
| 02/03/2005 | WO2005011108A2 Low-power high-psrr current-mode microphone pre-amplifier system and method |
| 02/03/2005 | WO2004030407B1 Drive mechanism |
| 02/03/2005 | US20050027884 Information output control system, information output control method, and information output control program |
| 02/03/2005 | US20050025320 Multi-media apparatus |
| 02/03/2005 | US20050025319 Dodecahedral speaker system |
| 02/02/2005 | EP1502475A1 Method and system of representing a sound field |
| 02/02/2005 | EP1502361A2 Multi-channel downmixing device |
| 02/02/2005 | EP1290912B1 Method for noise suppression in an adaptive beamformer |
| 02/02/2005 | CN2676552Y 网络语音播放器 VoIP player |
| 02/02/2005 | CN1575620A Method and device for the interference elimination of a redundant acoustic signal |
| 02/02/2005 | CN1575558A Apparatus and method of controlling signal levels |
| 02/02/2005 | CN1575037A Loudspeaker assembly |
| 02/02/2005 | CN1574536A Loudspeaker apparatus equipped with optional devices |
| 02/02/2005 | CN1573930A Speech correction apparatus |
| 02/02/2005 | CN1573917A Active vibratory noise control apparatus |
| 02/02/2005 | CN1572577A Sound system with equalization for a convertible automobile |
| 02/02/2005 | CN1187906C Method and device for producing a virtual speaker having a certain distance from sound source |
| 02/01/2005 | US6850623 Parametric loudspeaker with improved phase characteristics |
| 01/27/2005 | WO2005009074A1 Panel-shaped acoustic wave generator |
| 01/27/2005 | WO2005009072A2 Microphone comprising integral multi-level quantizer and single-bit conversion means |
| 01/27/2005 | WO2004083884A3 Method and device for segregating acoustic signals |
| 01/27/2005 | US20050018861 System and process for calibrating a microphone array |
| 01/27/2005 | US20050018856 System and method for controlling audio signals for playback |
| 01/27/2005 | US20050018836 Method to reduce acoustic coupling in audio conferencing systems |
| 01/26/2005 | EP1501332A2 A method to reduce acoustic coupling in audio conferencing systems |
| 01/26/2005 | EP1500304A2 Loudspeaker positions select infrastructure signal |
| 01/26/2005 | EP1500299A1 Loudspeaker system |
| 01/26/2005 | EP1499949A1 Apparatus and method for adapting audio signal |
| 01/26/2005 | EP1186155B1 Loudspeaker volume range control |
| 01/26/2005 | CN1571580A Loudspeaker system with LED lamp and controller therefor |
| 01/26/2005 | CN1186965C 扬声器装置 The speaker device |
| 01/26/2005 | CN1186963C Radio remote control system with microphone/loud speaker for Internet apparatus and method for controlling its telecontroller |
| 01/20/2005 | WO2005006808A1 Method and device for noise reduction |
| 01/20/2005 | US20050015252 Speech correction apparatus |
| 01/20/2005 | US20050013456 Active noise suppression for a hearing aid device which can be worn in the ear or a hearing aid device with otoplastic which can be worn in the ear |
| 01/20/2005 | US20050013455 MEMS digital-to-acoustic transducer with error cancellation |
| 01/20/2005 | US20050013451 Device and method for operating voice-supported systems in motor vehicles |
| 01/20/2005 | US20050013449 Integrating apparatus |
| 01/20/2005 | US20050013447 Supplying electrical power |
| 01/20/2005 | US20050013443 Audio correcting apparatus |
| 01/19/2005 | EP1499159A2 Active noise suppression in hearing-aids |
| 01/19/2005 | EP1499157A1 Speaker driving circuit and mobile terminal |
| 01/19/2005 | EP1499017A2 Electrical power supply |
| 01/19/2005 | EP1497823A1 Nicrophone and voice activity detection (vad) configurations for use with communication systems |
| 01/19/2005 | EP1186157B1 Symmetry based subband acoustic echo cancellation |
| 01/19/2005 | CN1568502A Sound intelligibilty enhancement using a psychoacoustic model and an oversampled filterbank |
| 01/19/2005 | CN1568094A Array type micro-electromechanic capacitor microphone |
| 01/19/2005 | CN1185908C Loudspeaker protection system having frequency band selective audio power control |
| 01/19/2005 | CN1185787C Switchable voltage follower and bridge driving circuit unit with the follower |
| 01/18/2005 | CA2344871C Method for in-situ measuring and in-situ correcting or adjusting a signal process in a hearing aid with a reference signal processor |
| 01/13/2005 | WO2005004533A1 Sound reproduction systems for use by adjacent users |
| 01/13/2005 | WO2005004532A1 Handsfree system for use in a vehicle |
| 01/13/2005 | WO2005004114A1 System and method for audio signal processing |
| 01/13/2005 | US20050010111 Ultrasound method and apparatus for multi-line acquisition |
| 01/13/2005 | US20050008172 Apparatus and method for eliminating noise |
| 01/13/2005 | US20050008171 Audio data processing device, audio data processing method, program for the same, and recording medium with the program recorded therein |
| 01/13/2005 | US20050008167 Device for picking up/reproducing audio signals |
| 01/13/2005 | US20050008165 Automated system for adjusting line array speakers |
| 01/13/2005 | US20050008143 Echo canceller having spectral echo tail estimator |
| 01/12/2005 | EP1312162B1 Voice enhancement system |
| 01/12/2005 | EP1123637B1 Public address apparatus |
| 01/12/2005 | CN1565145A Transponder with a changeable circuit configuration |
| 01/12/2005 | CN1565088A Apparatus and method for level-dependent companding for wireless audio noise reduction |