| Patents for H03G 7 - Volume compression or expansion in amplifiers (2,243) |
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| 01/08/2003 | CN1390044A Reversible wavelet change and embedded code-flow process |
| 01/08/2003 | CN1098560C Circuit arrangement comprising a lograrithmic transfer function |
| 01/02/2003 | US20030004732 Method, apparatus, and program for envelope generation, audio compression, and audio expansion |
| 01/02/2003 | US20030004591 Process for noise reduction, particularly for audio systems, device and computer program product therefor |
| 01/02/2003 | US20030002659 Enhancing the intelligibility of received speech in a noisy environment |
| 01/02/2003 | EP1271772A1 A process for noise reduction, particularly for audio systems, device and computer program product therefor |
| 01/01/2003 | CN1097876C IF amplifiers/amplitude limiter |
| 12/24/2002 | US6498855 Method and system for selectively and variably attenuating audio data |
| 12/19/2002 | US20020190788 Method and apparatus for exponential gain variations with a linearly varying input code |
| 12/05/2002 | WO2002097979A2 Programmable logarithmic gain adjustment for open-loop amplifiers |
| 12/05/2002 | WO2002097977A2 Enhancing the intelligibility of received speech in a noisy environment |
| 12/05/2002 | WO2002056558A9 Active filter circuit with dynamically modifiable internal gain |
| 12/05/2002 | US20020181724 Efficient digital audio automatic gain control |
| 12/04/2002 | EP1263132A2 Variable signal attenuating circuit |
| 11/28/2002 | US20020176590 Variable signal attenuating circuit |
| 11/28/2002 | US20020175758 Programmable logarithmic gain adjustment for open-loop amplifiers |
| 11/26/2002 | US6486711 Capacitor-based exponential programmable gain amplifier |
| 11/21/2002 | US20020173865 Digital audio signal processing |
| 11/21/2002 | US20020172378 Softclip method and apparatus |
| 11/21/2002 | US20020172376 Output processing system and method |
| 11/21/2002 | US20020172374 Noise extractor system and method |
| 11/21/2002 | US20020171491 Non-linear signal processor |
| 11/20/2002 | CN1094715C Apparatus and method for controlling sound for audio/video appliance |
| 11/19/2002 | US6483380 GMC filter and method for suppressing unwanted signals introduced by the filter |
| 11/19/2002 | US6483367 Circuit arrangement for generating and amplifying an amplitude limited DC signal |
| 11/06/2002 | EP1254513A2 Signal processing system and method |
| 11/06/2002 | EP0922328B1 Multi-band audio compressor with look-ahead clipper |
| 10/30/2002 | EP1252712A1 Multiple time constant rectifier apparatus and method |
| 10/29/2002 | US6473662 Signal compressor for audio apparatus |
| 10/24/2002 | US20020154786 Audio dynamics processing control system |
| 10/23/2002 | EP1250754A1 Non-linear signal processor |
| 10/17/2002 | US20020150266 Radio distortion processing |
| 10/17/2002 | US20020149418 Logarithmic if amplifier with dynamic large signal bias circuit |
| 10/16/2002 | CN1092872C Bit serial digital expander |
| 10/15/2002 | US6466085 Amplifier circuit and preconditioning circuit for use in amplifier circuit |
| 10/03/2002 | US20020140507 Variable gain amplifier |
| 10/02/2002 | EP0793896B1 Audio signal reproduction apparatus |
| 10/01/2002 | CA2066793C Circuit configuration for signal limitation and field intensity detection |
| 09/26/2002 | WO2002056558A3 Active filter circuit with dynamically modifiable internal gain |
| 09/26/2002 | WO2001076063A3 Method for processing an input signal for producing an output signal and an application of said method in hearing aids and devices |
| 09/25/2002 | EP1243071A1 Audio compression circuit and method |
| 09/19/2002 | US20020133356 Methods, devices and computer program products for compressing an audio signal |
| 09/12/2002 | WO2002071597A2 Circuit arrangement for providing an exponential pre-distortion for an adjustable amplifier |
| 09/12/2002 | US20020126861 Audio expander |
| 09/12/2002 | US20020126860 Dynamic range compression of an audio signal |
| 09/06/2002 | WO2002069613A2 Method and system for adjusting the dynamic range of a digital-to-analog converter in a wireless communications device |
| 09/03/2002 | US6445248 Low noise amplifier having sequentially interpolated gain stages |
| 09/03/2002 | US6445233 Multiple time constant rectifier apparatus and method |
| 08/29/2002 | US20020120457 Method and system for adjusting the dynamic range of a digital-to-analog converter in a wireless communications device |
| 08/29/2002 | DE10106388A1 Schaltung zur Bereitstellung einer exponentiellen Vorverzerrung für einen einstellbaren Verstärker Circuit for producing exponential predistortion for an adjustable amplifier |
| 08/22/2002 | WO2002065226A1 Attenuator circuit |
| 08/14/2002 | EP1231712A2 Variable gain amplifier |
| 08/14/2002 | EP0776548B1 Linear-in-decibel variable gain amplifier |
| 08/07/2002 | EP1135968B1 Method for producing a constant sound pressure level in hearing aids and corresponding hearing aid |
| 08/01/2002 | WO2002060053A2 Methods, devices and computer program products for compressing an audio signal |
| 08/01/2002 | WO2002060052A2 Precision automatic gain control circuit |
| 08/01/2002 | WO2002033822A3 Circuit arrangement |
| 08/01/2002 | US20020103619 Statistics generator system and method |
| 07/30/2002 | US6426664 Suppresser circuit |
| 07/18/2002 | WO2002056558A2 Active filter circuit with dynamically modifiable internal gain |
| 07/18/2002 | WO2002056516A1 Communication device and communication system using it |
| 07/18/2002 | WO2002056470A1 Active filter circuit with dynamically modifiable gain |
| 07/18/2002 | WO2001076063A9 Method for processing an input signal for producing an output signal and an application of said method in hearing aids and devices |
| 07/11/2002 | US20020090096 Audio amplifier with voltage limiting in response to spectral content |
| 07/04/2002 | WO2002052737A1 Limit circuit |
| 07/04/2002 | US20020086651 Precision automatic gain control circuit |
| 07/04/2002 | US20020085725 System output control method and apparatus |
| 07/04/2002 | US20020084839 Circuit arrangement |
| 06/27/2002 | US20020079967 Attenuator control circuit |
| 06/26/2002 | EP1217731A2 Electric Circuit |
| 06/20/2002 | WO2002049210A2 Variable-gain differential input and output amplifier |
| 06/20/2002 | US20020076072 Software implemented loudness normalization for a digital hearing aid |
| 06/19/2002 | EP1214782A1 Amplifier circuit with a sectional linear transmission function |
| 06/13/2002 | US20020070788 Exponential conversion circuit and variable gain circuit |
| 06/13/2002 | DE10060483A1 Circuit for generating and amplifying limited amplitude d.c. signal with level essentially proportional to input signal logarithm has FM demodulator, squaring stage, current adding unit |
| 06/11/2002 | US6405164 Audio compression circuit and method |
| 06/11/2002 | US6405092 Method and apparatus for amplifying and attenuating digital audio |
| 06/06/2002 | WO2002045261A2 Controllable set of current sources |
| 06/05/2002 | CN1086064C Temperature compensated wide dynanic range power detection circuitry for portable RF transmission terminals |
| 05/23/2002 | US20020061738 System and method for inverting automatic gain control (AGC) and soft limiting |
| 05/23/2002 | US20020061112 Dynamics reduction for dynamics-limited audio systems |
| 05/09/2002 | US20020055341 Variable gain amplifier device |
| 05/08/2002 | EP1203448A1 Log-linear variable gain amplifiers and amplifier control apparatus and methods |
| 05/07/2002 | CA2140668C Semiconductor emulation of vacuum tubes |
| 05/02/2002 | US20020051546 Variable attack & release system and method |
| 04/25/2002 | WO2002033822A2 Circuit arrangement |
| 04/25/2002 | US20020048109 dB linear variable gain amplifier |
| 04/18/2002 | WO2002031973A2 Gain linearizer for variable gain amplifiers |
| 04/18/2002 | DE10051463A1 DC voltage signal generation and amplification circuit for radio receiver has difference amplifier stage in parallel with final amplifier stage, multiplier and adder |
| 04/18/2002 | DE10050150A1 Dynamikreduzierung für dynamikbegrenzte Audiosysteme Dynamic reduction for limited dynamic audio systems |
| 04/18/2002 | DE10049383A1 Manually operated regulating unit has regulating stage in form of manually variable inductance and/or capacitance with control stage matched to correspond to hearing |
| 04/17/2002 | EP1198062A2 Reduction of dynamics for audiosystems with limited dynamics |
| 04/17/2002 | EP0807332B1 Filter with feed-forward agc |
| 04/09/2002 | US6369648 Linear traveling wave tube amplifier utilizing input drive limiter for optimization |
| 04/03/2002 | EP1193868A2 Variable gain amplifier device |
| 03/27/2002 | EP1191687A2 Exponential conversion circuit and variable gain circuit |
| 03/21/2002 | WO2002023723A1 A gmc filter and method for suppressing unwanted signals introduced by the filter |
| 03/13/2002 | EP0856209B1 Trimmable variable compression amplifier for hearing aid |
| 03/06/2002 | CN1080514C Signal processing device with gain controlled amplifier with two responsibilities |
| 02/27/2002 | EP0784825B1 Temperature compensated logarithmic convertor |