| Patents for H03G 7 - Volume compression or expansion in amplifiers (2,243) |
|---|
| 02/20/2002 | CN1337096A Improvements relating to polyphase receivers |
| 02/14/2002 | US20020019733 System and method for enhancing the intelligibility of received speech in a noise environment |
| 02/07/2002 | WO2002011283A2 Amplitude limitation |
| 01/31/2002 | US20020012409 Digital automatic gain control |
| 01/24/2002 | WO2001039370A3 Signal processing system and method |
| 12/27/2001 | WO2001048915A3 Electronic circuit |
| 12/27/2001 | US20010055400 Signal compressor for audio apparatus |
| 12/19/2001 | EP1164694A2 Microwave amplifier |
| 12/18/2001 | US6331802 Linear gain control amplifier |
| 12/06/2001 | US20010048334 Logarithmic amplifier |
| 12/05/2001 | EP0796522B1 An intermediate frequency amplifier and a method of producing a received signal strength indicator signal |
| 10/25/2001 | US20010033667 Audio circuitry for dynamics reduction |
| 10/25/2001 | US20010033191 All NPN class-AB log-domain integrator with supporting input and output circuitry for low-voltage and high-frequency continuous-time filtering |
| 10/17/2001 | EP1145451A1 Improvements in or relating to polyphase receivers |
| 10/11/2001 | DE10015833A1 Low frequency circuit for dynamic limiting in audio system uses a pair of non linear input stages |
| 10/10/2001 | EP1143611A1 Digital automatic gain control |
| 10/04/2001 | EP1138116A1 High volume expander circuit |
| 10/03/2001 | CN1072413C Radio receiver |
| 10/03/2001 | CN1072359C Method and apparatus for detecting input signal level |
| 10/02/2001 | US6298139 Apparatus and method for maintaining a constant speech envelope using variable coefficient automatic gain control |
| 10/02/2001 | US6297695 High volume expander circuit |
| 09/27/2001 | DE10011193A1 Compressor circuit for compander system has variable amplifier preceded by pre-attenuator and followed by amplitude limiting device |
| 09/26/2001 | EP1135968A1 Method for producing a constant sound pressure level in hearing aids and corresponding hearing aid |
| 09/19/2001 | CN1071519C Filter with feed-forward AGC |
| 08/29/2001 | EP1128651A2 Impedance blocking filter circuit |
| 08/21/2001 | US6278751 Receiver for digital voice broadcasting |
| 07/25/2001 | CN1305661A User adjustable volume control that accommodates hearing |
| 07/25/2001 | CN1305263A Impadance blocking filter circuit |
| 07/12/2001 | WO2001050609A1 Multiple time constant rectifier apparatus and method |
| 07/12/2001 | WO2001050597A1 Audio compression circuit and method |
| 07/12/2001 | DE19963648A1 Overdrive protection in signal processing unit involves damping or amplifying higher or lower signal amplitudes respectively if signal amplitude exceeded with signal amplitude increasing |
| 07/12/2001 | CA2395281A1 Audio compression circuit and method |
| 07/12/2001 | CA2395277A1 Multiple time constant rectifier apparatus and method |
| 07/10/2001 | US6259482 Digital BTSC compander system |
| 07/05/2001 | WO2001048915A2 Electronic circuit |
| 07/05/2001 | WO2001013513A8 Programmable low noise cmos differential voltage controlled logarithmic attenuator and method |
| 07/05/2001 | US20010006353 Electronic circuit |
| 06/19/2001 | US6249170 Logarithmic gain control circuit and method |
| 06/13/2001 | EP1107451A2 Transmission path switching circuit |
| 06/07/2001 | WO2001041303A1 Non-linear signal processor |
| 06/06/2001 | CN1066872C Low-input-signal bandwidth compressor and amplifier control circuit |
| 05/31/2001 | WO2001039385A1 Improvements in or relating to polyphase receivers |
| 05/31/2001 | WO2001039370A2 Signal processing system and method |
| 05/29/2001 | US6240191 Audio volume control circuit using pulse width modulation signal |
| 05/08/2001 | US6229375 Programmable low noise CMOS differentially voltage controlled logarithmic attenuator and method |
| 05/08/2001 | US6229374 Variable gain amplifiers and methods having a logarithmic gain control function |
| 05/02/2001 | EP1073984A4 Apparatus and method for improved dynamic range and response time in a logarithmic amplifier |
| 04/24/2001 | US6222941 Apparatus for compression using reversible embedded wavelets |
| 04/22/2001 | CA2318588A1 Impedance blocking filter circuit |
| 04/18/2001 | CN1064795C Device for reproducing recorded sound signal |
| 04/17/2001 | USRE37138 Log-polar signal processing |
| 04/12/2001 | WO2001026221A1 Dynamic range compressor-limiter and low-level-expander with look-ahead for maximizing and stabilizing voice level in telecommunication applications |
| 04/12/2001 | DE19948172A1 Level regulation in signal processing unit involves tapping signal from transmission path and regulating level reduction and/or level increase depending on signal amplitude |
| 04/11/2001 | EP1090457A1 Linear traveling wave tube amplifier utilizing input drive limiter for optimization |
| 04/04/2001 | EP1089430A2 A dB-linear variable gain amplifier |
| 04/04/2001 | CN1064200C Transcoding and transdecoding units and method for adjusting the output thereof |
| 04/03/2001 | US6212259 Impedance blocking filter circuit |
| 03/29/2001 | WO2001022579A1 Multi-channel audio compressor control circuit for linking individual channels together |
| 03/29/2001 | WO2001022578A1 Amplifier circuit with a sectional linear transmission function |
| 03/28/2001 | CN1289500A Telephone with means for enhancing the subjective signal impression in the presence of noise |
| 03/22/2001 | WO2001020779A1 High volume expander circuit |
| 03/21/2001 | EP1084532A1 Linear quad variable gain amplifier and method for implementing same |
| 03/14/2001 | EP1083656A2 Switched signal processing circuit |
| 03/14/2001 | EP0885484A4 Fat sound creation means |
| 03/13/2001 | US6201873 Loudspeaker-dependent audio compression |
| 03/06/2001 | US6198830 Method and circuit for the amplification of input signals of a hearing aid |
| 02/27/2001 | US6195465 Method and apparatus for compression using reversible wavelet transforms and an embedded codestream |
| 02/27/2001 | US6194921 Analog signal amplifier circuit using a differential pair of MOSFETs (insulated-gate field effect transistors) in an input stage |
| 02/22/2001 | WO2001013513A1 Programmable low noise cmos differential voltage controlled logarithmic attenuator and method |
| 02/21/2001 | EP1076928A1 User adjustable volume control that accommodates hearing |
| 02/15/2001 | WO2001011770A1 Dynamic compressor used as part of a signal processing circuit in audio technique, for adjustment and/or telephone system |
| 02/14/2001 | EP1076447A2 Impedance blocking filter circuit |
| 02/14/2001 | CN1283920A 阻抗阻塞滤波器电路 An impedance blocking filter circuit |
| 02/07/2001 | EP1073984A1 Apparatus and method for improved dynamic range and response time in a logarithmic amplifier |
| 02/07/2001 | EP1020027A4 Cmos differential voltage controlled logarithmic attenuator and method |
| 02/01/2001 | WO2001008302A1 Log-linear variable gain amplifiers and amplifier control apparatus and methods |
| 01/31/2001 | EP1073196A2 Signal notching system for limiting signal peaks |
| 01/31/2001 | CN1061490C Amplifier stage with DB-linear output voltage |
| 01/30/2001 | US6181777 Impedance blocking filter circuit |
| 01/10/2001 | EP1067683A1 Electrical clipper |
| 01/09/2001 | US6172561 High volume expander circuit |
| 01/09/2001 | CA2077849C Circuit arrangement for controlling the volume range of a voice terminal |
| 01/02/2001 | US6169808 Signal compressing circuit |
| 12/27/2000 | EP0867067A4 Amplifier having linear-in-db gain control |
| 12/26/2000 | US6167139 Apparatus and method for controlling sound for audio/video appliance |
| 12/19/2000 | US6163212 Power amplifier system |
| 12/19/2000 | US6163198 Log-linear variable gain amplifiers and amplifier control apparatus and methods |
| 11/22/2000 | CN1274195A Electric limiter |
| 11/07/2000 | US6144244 Logarithmic amplifier with self-compensating gain for frequency range extension |
| 11/07/2000 | CA2049544C Logarithmic amplifier/detector delay compensation |
| 11/02/2000 | WO2000065872A1 Loudness normalization control for a digital hearing aid |
| 11/02/2000 | CA2372017A1 Loudness normalization control for a digital hearing aid |
| 10/26/2000 | WO2000064047A1 Linear traveling wave tube amplifier utilizing input drive limiter for optimization |
| 10/18/2000 | EP1044549A1 Telephone with means for enhancing the subjective signal impression in the presence of noise |
| 10/04/2000 | EP1040570A2 A current steering variable gain amplifier with linearizer |
| 10/03/2000 | US6127899 High frequency anharmonic oscillator for the generation of broadband deterministic noise |
| 09/26/2000 | US6124761 Variable gain amplifier with gain linear with control voltage |
| 09/19/2000 | US6121834 Signal compressing apparatus |
| 08/29/2000 | US6111961 Amplifier for a guitar or other musical instrument |
| 08/22/2000 | US6107879 Automatic dynamic range control circuit |