| Patents for H03G 5 - Tone control or bandwidth control in amplifiers (3,156) |
|---|
| 08/15/1978 | US4107622 Tone controller |
| 08/08/1978 | US4105945 Active load circuits |
| 07/18/1978 | US4101837 Threshold extension fm demodulator apparatus for wide band width fm signals |
| 07/04/1978 | US4099134 Amplifier with controllable transmission factor and switchable control characteristic |
| 06/13/1978 | US4095188 Cascaded amplifier with frequency sensitive coupling |
| 05/23/1978 | US4091236 Automatically tunable notch filter and method for suppression of acoustical feedback |
| 05/02/1978 | US4087641 Noise limiting circuit for FM stereo receiver |
| 03/14/1978 | US4079334 Digitally controlled amplifying equipment |
| 03/07/1978 | US4078215 Electronic filter circuit |
| 02/28/1978 | US4076959 Volume, tone and balance control for multi-channel audio systems |
| 01/31/1978 | USRE29529 Equalization circuit |
| 01/31/1978 | US4071782 Phaseless equalizer |
| 12/20/1977 | US4063450 Voltage controlled electronic filter |
| 12/13/1977 | US4063039 Stereo noise reduction circuit |
| 10/25/1977 | US4055818 Tone control circuit |
| 10/04/1977 | US4052560 Loudspeaker distortion reduction systems |
| 09/06/1977 | US4046960 Audio fidelity frequency equalizer system |
| 08/30/1977 | US4045748 Audio control system |
| 08/30/1977 | US4045740 Method for optimizing the bandwidth of a radio receiver |
| 08/30/1977 | US4045731 Filter having an automatically controlled variable cut-off frequency |
| 08/02/1977 | US4039980 Voltage-controlled filter |
| 08/02/1977 | US4039977 Adjustable compensating circuit having differential capacitor in each tunable stage |
| 07/05/1977 | US4034308 Amplifier with controllable transmission factor and switchable control characteristic |
| 06/28/1977 | US4032866 Low loss frequency response corrective network |
| 06/28/1977 | US4032855 Phonograph preamplifier network with infrasonic cutoff response |
| 06/14/1977 | US4030036 Bandwidth changing circuit |
| 06/14/1977 | US4029906 Automatic noise reduction system of FM stereo receiver |
| 05/24/1977 | US4025721 Method of and means for adaptively filtering near-stationary noise from speech |
| 02/22/1977 | US4009400 Digitally controlled variable conductance |
| 01/11/1977 | US4002994 Tone control circuit |
| 01/04/1977 | US4001709 Active dual channel tuning control |
| 12/14/1976 | US3997852 RF amplifier |
| 11/09/1976 | US3991374 Controllable bandwidth IF filter circuit for radio receivers |
| 11/09/1976 | US3991283 Multichannel record disc reproducing system |
| 11/02/1976 | US3989904 Method and apparatus for setting an aural prosthesis to provide specific auditory deficiency corrections |
| 11/02/1976 | US3989897 Method and apparatus for reducing noise content in audio signals |
| 10/26/1976 | US3988541 Method and apparatus for frequency compensation of electro-mechanical transducer |
| 09/28/1976 | US3983505 Signal frequency band control system |
| 09/14/1976 | US3980965 Frequency response control circuit apparatus |
| 08/31/1976 | US3978422 Broadband automatic gain control amplifier |
| 08/31/1976 | US3978421 Electrical musical instrument amplifier having improved tremolo circuit, improved reverberation control, and power reduction circuit for distortion mode operation |
| 08/10/1976 | US3974461 Wide dynamic range voltage controlled filter for electronic musical instruments |
| 07/06/1976 | US3968430 Installation for the detection and processing of electrical signals |
| 06/01/1976 | US3961278 Transistor amplifier |
| 05/11/1976 | US3956719 Variable band pass filter circuit |
| 05/04/1976 | US3955151 Amplifier with a plurality of negative feedback circuits |
| 04/27/1976 | US3953771 Multiple trimmer capacitor, particularly for adjustment of crystal oscillators |
| 04/13/1976 | US3950711 Frequency characteristics-controlling device |
| 04/13/1976 | US3950694 Installation for the detection and processing of electrical signals |
| 04/06/1976 | US3949325 Audio equalizers for large rooms |
| 03/23/1976 | US3946249 Signal control circuit |
| 03/09/1976 | US3943303 Abnormal sound eliminating system in record disc reproducing apparatus |
| 03/09/1976 | US3943293 Stereo sound reproducing apparatus with noise reduction |
| 02/24/1976 | US3940709 Equalization circuit |
| 02/17/1976 | US3939428 Receiver with automatic pass band control |
| 01/06/1976 | US3931576 Automatic gain control circuit for radio receiver |