| Patents for H03G 5 - Tone control or bandwidth control in amplifiers (3,156) |
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| 06/24/2003 | US6584204 Loudspeaker system with feedback control for improved bandwidth and distortion reduction |
| 06/19/2003 | WO2003050942A1 Communication device with active equalization and method therefor |
| 06/17/2003 | US6580327 Electronically controllable slope equalizer |
| 06/12/2003 | US20030108209 Communication device with active equalization and method therefor |
| 06/04/2003 | CN1422094A Apparatus and method for controlling multifunction device of mobile terminal |
| 05/29/2003 | US20030100349 Apparatus and method for controlling multi-function device of mobile terminal |
| 05/27/2003 | US6571393 Data transmission system |
| 05/08/2003 | US20030086683 Information processing apparatus and reproduction processing control method |
| 05/08/2003 | US20030086579 Apparatus and method of controlling signal levels |
| 05/08/2003 | US20030086577 Audio system with a phase adjustment circuit |
| 05/01/2003 | WO2003036406A2 Apparatus and method of controlling signal levels |
| 05/01/2003 | US20030081797 Audio processing device |
| 04/24/2003 | WO2002021687A3 System and method for varying levels of low audio frequences inversely with audio signal level |
| 04/24/2003 | US20030078767 Method and system for implementing a low complexity spectrum estimation technique for comfort noise generation |
| 04/23/2003 | CN1106720C Dual-mode radio receiver for receiving narrowband and wide band signals |
| 04/16/2003 | CN1106069C Acoustic signal waveform intensifier and intensifying method |
| 04/03/2003 | WO2003028230A1 Method for operating a noise-output device and noise-output device |
| 04/03/2003 | US20030063760 Remote controlled audio mixing console |
| 03/27/2003 | WO2003026127A1 Unobtrusive removal of periodic noise |
| 03/20/2003 | US20030054787 Gigabit ethernet transceiver with analog front end |
| 03/20/2003 | US20030053640 Unobtrusive removal of periodic noise |
| 03/13/2003 | WO2003021844A2 Controlled phase-canceling circuits/systems |
| 03/06/2003 | WO2003019775A2 Audio processing device |
| 03/04/2003 | US6529605 Method and apparatus for dynamic sound optimization |
| 02/27/2003 | WO2003017716A2 Speaker equalization tool |
| 02/26/2003 | EP1285555A1 Ultra bass ii |
| 02/20/2003 | US20030035555 Speaker equalization tool |
| 02/19/2003 | CN1398499A Infra bass |
| 02/19/2003 | CN1101972C Appts. for adjusting frequency characteristic of audio signal according to biorhythm |
| 02/13/2003 | WO2003012989A1 Programmable if bandwidth using fixed bandwidth filters |
| 02/13/2003 | CA2453944A1 Programmable if bandwidth using fixed bandwidth filters |
| 02/06/2003 | WO2002091104A3 Self-correlation detection and in-band and out-of-band signal detection for automatic gain calibration systems |
| 02/06/2003 | US20030027534 Programmable if bandwidth using fixed bandwidth filters |
| 01/30/2003 | WO2003009469A2 Filter circuit and method for processing an audio signal |
| 01/30/2003 | DE10134927C1 Filterschaltung und Verfahren zur Verarbeitung eines Audiosignals Filter circuit and method for processing an audio signal |
| 01/29/2003 | EP1279316A2 Infra bass |
| 01/22/2003 | EP0732003B1 Fm demodulator with threshold extension and receiver comprising such an fm demodulator |
| 01/16/2003 | US20030012313 In-band and out-of-band signal detection for automatic gain calibration systems |
| 01/15/2003 | EP1275200A2 Method and apparatus for dynamic sound optimization |
| 01/15/2003 | CN1391780A Hearing aid device incorporating signal processing techniques |
| 12/31/2002 | US6501792 Serial digital data communications receiver with improved automatic cable equalizer, AGC system, and DC restorer |
| 12/19/2002 | WO2002101727A1 Method and system for determining filter gain and automatic gain control |
| 12/19/2002 | WO2002101724A1 Method and system for implementing a low complexity spectrum estimation technique for comfort noise generation |
| 12/19/2002 | WO2002101723A1 Method and system for implementing a gaussian white noise generator for real time speech synthesis applications |
| 12/19/2002 | WO2002101722A1 Method and system for generating colored comfort noise in the absence of silence insertion description packets |
| 12/19/2002 | US20020191687 Equalizer arrangement and method for generating an output signal by equalizing an input signal |
| 12/18/2002 | CN1096793C Sound circuit |
| 12/10/2002 | US6492876 Low power analog equalizer with variable op-amp gain |
| 12/05/2002 | WO2002056558A9 Active filter circuit with dynamically modifiable internal gain |
| 12/05/2002 | US20020183027 Self-correlation detection in automatic gain calibration |
| 12/04/2002 | EP1263131A1 Filtering device and method of controlling said device |
| 11/28/2002 | US20020175752 Variable gain and low noise amplifier for received signals in imaging apparata |
| 11/21/2002 | US20020173938 Method and VLSI circuits allowing to change dynamically the logical behaviour |
| 11/20/2002 | EP1258169A2 Infrabass |
| 11/14/2002 | WO2002091104A2 Self-correlation detection and in-band and out-of-band signal detection for automatic gain calibration systems |
| 11/12/2002 | US6479742 Audio system in electronic musical instrument |
| 11/07/2002 | WO2002089521A2 Microphone-tailored equalizing system |
| 11/05/2002 | US6476660 Fully integrated long time constant integrator circuit |
| 10/31/2002 | US20020159607 Method for using source content information to automatically optimize audio signal |
| 10/31/2002 | US20020159603 Picked-up-sound reproducing method and apparatus |
| 10/30/2002 | EP1253711A2 Class D amplifier |
| 10/29/2002 | US6472940 Gigabit ethernet transceiver with analog front end |
| 10/17/2002 | US20020150255 Bass compensation device and a sound system using the device |
| 10/17/2002 | US20020149426 Class D amplifier |
| 10/10/2002 | WO2002080358A2 Digital audio processor |
| 10/03/2002 | WO2002077977A1 Method and device for centralised correction of speech tone on a telephone communication network |
| 09/26/2002 | WO2002056558A3 Active filter circuit with dynamically modifiable internal gain |
| 09/18/2002 | EP1241921A2 Acoustic signal processor |
| 09/12/2002 | WO2002007308A3 Infrabass |
| 09/12/2002 | US20020126858 Digital base booster using arithmetic processor |
| 09/05/2002 | DE10107385A1 Vorrichtung zum geräuschabhängigen Einstellen der Lautstärken Apparatus for the noise-dependent adjustment of the volume |
| 09/04/2002 | EP1236377A1 Hearing aid device incorporating signal processing techniques |
| 08/29/2002 | WO2002067418A2 Device for the noise-dependent adjustment of sound volumes |
| 08/29/2002 | US20020118846 Acoustic signal processor |
| 08/29/2002 | DE10108664C1 Entzerreranordnung und Verfahren zum Erzeugen eines Ausgangssignals durch Entzerren eines Eingangssignals An equalizer and method for generating an output signal by equalizing an input signal |
| 08/28/2002 | EP1235346A2 Equalizer device and method of generating an output signal by equalizing an input signal |
| 08/28/2002 | EP0883934B1 Dual-mode radio receiver for receiving narrowband and wide band signals |
| 08/28/2002 | CN1366784A Ultra bass II |
| 08/28/2002 | CN1366383A Basic digital accentuator using arithmetic processor |
| 08/28/2002 | CN1089967C Amplifier circuit for sound frequency signal |
| 08/27/2002 | US6442281 Loudness volume control system |
| 08/21/2002 | EP1233509A1 Digital audio processor |
| 08/14/2002 | EP1230739A2 Vehicle accessory microphone |
| 08/14/2002 | EP1230732A1 Gigabit ethernet transceiver with analog front end |
| 08/01/2002 | US20020102001 Sound quality regulation apparatus |
| 07/31/2002 | CN1362001A Method for processing an audio signal |
| 07/18/2002 | WO2002056558A2 Active filter circuit with dynamically modifiable internal gain |
| 07/18/2002 | WO2002056470A1 Active filter circuit with dynamically modifiable gain |
| 07/18/2002 | WO2001084880A3 Infra bass |
| 06/18/2002 | US6408079 Distortion removal apparatus, method for determining coefficient for the same, and processing speaker system, multi-processor, and amplifier including the same |
| 06/18/2002 | US6407690 Reference voltage generator circuit |
| 06/13/2002 | WO2002047261A1 Playback device for audio signals that are transmitted over potentially disturbed channels |
| 06/13/2002 | WO2002047260A2 Am receiver with audio filtering means |
| 06/13/2002 | DE10060296A1 Wiedergabevorrichtung für über potentiell störbehaftete Kanäle übermittelte Audiosignale Reproducing apparatus potentially subject to interference on channels transmitted audio signals |
| 06/12/2002 | EP1213832A1 AM receiver with audio filtering means |
| 06/11/2002 | USRE37739 Controllable integrator |
| 06/06/2002 | US20020069051 Speech band division decoder |
| 06/05/2002 | EP1210765A1 Filter banked gain control of audio in a noisy environment |
| 05/30/2002 | US20020065048 Method and apparatus for compensating for distortion in radio apparatus |
| 05/23/2002 | US20020061109 Audio system |