| Patents for H03G 7 - Volume compression or expansion in amplifiers (2,243) |
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| 10/20/1988 | WO1988008227A1 Method and apparatus for improving voice intelligibility in high noise environments |
| 10/06/1988 | WO1988007787A1 Semiconductor emulation of tube amplifiers |
| 09/13/1988 | US4771472 Method and apparatus for improving voice intelligibility in high noise environments |
| 08/23/1988 | US4766395 Circuits to provide desired conductance characteristics using a FET |
| 08/02/1988 | CA1240002A1 Fast recovery amplifier |
| 08/02/1988 | CA1239876A1 Variable emphasis circuit |
| 07/27/1988 | EP0275993A2 Fmx stereophonic receiver |
| 07/26/1988 | US4760602 Variable preemphasis/deemphasis network |
| 07/19/1988 | US4758797 Amplifier with compressor and expander function for ground symmetrical electrical signals |
| 07/14/1988 | WO1988005226A1 Radio receiver speech amplifier circuit |
| 07/12/1988 | US4757373 Amplifier circuit operative with an adaptive signal compression |
| 06/30/1988 | DE3642984A1 Circuit for volume compression and/or expansion of a signal |
| 06/28/1988 | US4754483 Data compression system and method for audio signals |
| 06/28/1988 | US4754230 For a communication system |
| 06/22/1988 | EP0272161A1 Method and circuit for the linearization of the transfer function of a two-port by digital error samples, particularly of an LF two-port with an asymmetric transfer function |
| 06/16/1988 | DE3642366A1 Compander system for electro-acoustic transmission paths |
| 06/16/1988 | DE3642363A1 Compression level setting stage for a broadband compander |
| 05/19/1988 | WO1988003695A1 Analogical system for noise reduction in magnetic recordings |
| 05/10/1988 | US4743863 Device to increase the dynamic ratio of an amplifier circuit, especially that of an on-board MLS receiver |
| 05/10/1988 | US4743861 Frequency response compensation circuit |
| 05/04/1988 | EP0265763A2 Frequency response compensation circuit |
| 04/05/1988 | US4736434 MOSFET analog signal squaring circuit |
| 04/05/1988 | US4736433 Circuit arrangements for modifying dynamic range using action substitution and superposition techniques |
| 03/30/1988 | EP0261954A2 Digital signal gain control circuitry |
| 03/24/1988 | WO1988002201A1 Digital audio companding and error conditioning |
| 03/23/1988 | EP0260785A2 Fast recovery amplifier |
| 03/15/1988 | US4731851 Digital signal gain control circuitry for varying digital signals in substantially equal db steps |
| 03/08/1988 | US4730165 Non-linear signal processing apparatus |
| 03/02/1988 | EP0258100A1 Peak power regulation circuit for a radio transmitter |
| 03/02/1988 | EP0257346A2 Proportional automatic gain control |
| 02/18/1988 | DE3627056A1 Circuit for dynamic compression or expansion in a useful-signal path |
| 02/16/1988 | US4726067 Method of and apparatus for extending the useful dynamic range of digital-audio systems |
| 02/11/1988 | WO1988001112A1 Sound compression and expansion circuit in a useful signal path |
| 02/11/1988 | DE3627055A1 Circuit for dynamic compression or expansion in a useful-signal path |
| 02/09/1988 | US4724398 Gain-controlled amplifier |
| 01/26/1988 | US4721923 Radio receiver speech amplifier circuit |
| 01/05/1988 | US4718099 Automatic gain control for hearing aid |
| 12/29/1987 | US4716316 Full wave, self-detecting differential logarithmic rf amplifier |
| 12/22/1987 | US4714844 Logarithmic compression circuit |
| 12/15/1987 | US4713620 Dual signal amplitude modifying and combining apparatus |
| 12/09/1987 | EP0248428A2 Intermediate frequency amplification circuit capable of detecting a field strength with low electric power |
| 12/01/1987 | US4710772 Log magnitude pulse interference detection for a radar system |
| 11/24/1987 | US4709403 Apparatus for controlling output power of transmitter |
| 11/03/1987 | US4704584 Instantaneous floating point amplifier |
| 10/27/1987 | CA1228670A1 Video signal emphasis circuit |
| 10/20/1987 | US4701722 Circuit arrangements for modifying dynamic range using series and parallel circuit techniques |
| 09/22/1987 | US4696044 Dynamic noise reduction with logarithmic control |
| 09/16/1987 | EP0237203A2 Hearing aid circuit |
| 09/10/1987 | DE3606702A1 Controllable RF amplifier having a linear control characteristic |
| 09/09/1987 | EP0236122A2 Attenuator circuit employing bootstrapping |
| 09/09/1987 | EP0236076A2 Circuits for altering the dynamic range of audio signals |
| 09/03/1987 | DE3606703C1 Controllable RF amplifier |
| 09/01/1987 | US4691381 Receiver for amplitude modulated signals |
| 09/01/1987 | US4691174 Fast recovery amplifier |
| 08/12/1987 | EP0231721A2 Automatic gain control for hearing aid |
| 07/28/1987 | US4683449 Noise reduction compression system controlled by compressed output components which are in-band |
| 07/28/1987 | CA1224876A1 Data compression system and method for audio signals |
| 07/21/1987 | US4682152 Digital data companding |
| 07/14/1987 | US4680553 Intermediate frequency amplifier with signal strength detection circuit |
| 06/30/1987 | US4677645 Audio signal transmission system having noise reduction means |
| 06/24/1987 | EP0226401A2 Pulse interference detection for a radar system |
| 06/16/1987 | US4674122 Encoding for the FMX companding system |
| 05/27/1987 | EP0223295A1 Amplifier circuit operative with an adaptive signal compression |
| 05/26/1987 | CA1222293A1 Automatic linear compression circuit |
| 04/29/1987 | EP0220043A2 Circuits to provide desired conductance characteristics using a fet |
| 04/28/1987 | US4661981 Method and means for processing speech |
| 04/14/1987 | CA1220527A1 Fm stereophonic system incorporating companding of difference signal |
| 03/31/1987 | CA1219810A2 Audio compressors and expanders |
| 03/31/1987 | CA1219809A2 Audio compressors and expanders |
| 03/03/1987 | US4647960 Vertical contour emphasis de-emphasis circuit |
| 02/25/1987 | EP0211714A1 Device for increasing the dynamic range of an amplifying circuit, in particular of an MLS board receiver |
| 02/24/1987 | US4646275 Dynamic range compression for variable area or wiggle trace display method and apparatus |
| 02/04/1987 | EP0096719B1 Non-linear amplifier systems |
| 01/27/1987 | CA1217246A1 Wide band amplifier limiter device |
| 01/21/1987 | CN86104008A Circuit arrangements for modifying dynamic range using action substitution and superposition techniques |
| 01/13/1987 | CA1216525A1 Method and means for processing speech |
| 01/06/1987 | US4634960 Automatic linear compression circuit |
| 12/30/1986 | EP0206746A2 Circuit arrangements for modifying dynamic range using series and parallel circuit techniques |
| 12/30/1986 | EP0206732A2 Circuit arrangements for modifying dynamic range using variable combining techniques |
| 12/30/1986 | EP0206731A2 Circuit arrangements for modifying dynamic range using action substitution and superposition techniques |
| 12/16/1986 | US4630302 Hearing aid method and apparatus |
| 12/16/1986 | US4629995 Variable emphasis circuit |
| 12/09/1986 | US4628276 Logarithmically linearly controlled variable gain amplifier |
| 09/23/1986 | CA1211843A1 Digital voice compression having a digitally controlled agc circuit and means for including the true gain in the compressed data |
| 09/09/1986 | US4611342 Digital voice compression having a digitally controlled AGC circuit and means for including the true gain in the compressed data |
| 08/20/1986 | EP0191619A2 Automatic linear compression circuit |
| 08/13/1986 | CN86101494A Automatic linear compression circuit |
| 08/12/1986 | CA1209705A1 Digital code translator |
| 07/22/1986 | CA1208138A1 Aurally sensitized flat frequency response noise reduction compansion system |
| 07/08/1986 | CA1207241A1 System for maximum efficient transfer of modulated energy |
| 06/17/1986 | US4595846 Electronic circuit for amplitude variation and level displacement of a signal |
| 06/17/1986 | CA1206249A1 Extrema coding signal processing method and apparatus |
| 06/10/1986 | CN85106804A Nonlinear signal processing apparatus |
| 05/27/1986 | US4591796 Performance predictable linearizing or function modifying circuit |
| 05/27/1986 | US4591733 Circuit arrangement for generating a control voltage which is dependent upon an alternating voltage |
| 05/27/1986 | CA1205018A1 Digital dynamic range converter |
| 05/13/1986 | US4588958 Adjustable reflective predistortion circuit |
| 05/13/1986 | US4588956 Wide band amplifier-limiter device |
| 04/23/1986 | EP0178936A2 Variable emphasis circuit |
| 04/15/1986 | US4583074 Expansion circuit for digital signals |