| Patents for H03G 5 - Tone control or bandwidth control in amplifiers (3,156) |
|---|
| 01/29/1985 | US4496910 Pre-amplifier having improved sonic performance |
| 01/22/1985 | US4495640 Adjustable distortion guitar amplifier |
| 12/25/1984 | US4490843 Dynamic equalizing |
| 12/25/1984 | US4490585 Hearing aid |
| 11/20/1984 | US4484345 Prosthetic device for optimizing speech understanding through adjustable frequency spectrum responses |
| 11/06/1984 | US4481662 Method and apparatus for operating a loudspeaker below resonant frequency |
| 11/06/1984 | US4481661 Effects box system and method |
| 10/24/1984 | EP0122663A2 Method and system for improving speaker performance |
| 10/23/1984 | US4479238 Audio effects system and method |
| 10/03/1984 | EP0120029A1 Noiseless connection and disconnection of audio effects modules |
| 10/02/1984 | CA1175505A1 Circuit arrangement with electronically controllable transfer characteristic |
| 09/26/1984 | EP0119791A1 Circuit arrangement for correcting frequency response in accordance with frequency response of a sound field |
| 09/26/1984 | EP0119645A1 Automatic equalizing system with discrete Fourier transform (DFT) or fast Fourier transform (FFT) |
| 09/18/1984 | CA1174738A1 Frequency characteristic adjusting apparatus |
| 08/07/1984 | US4464781 Equalizer apparatus |
| 08/02/1984 | WO1984003009A1 Tunable active filter |
| 07/24/1984 | CA1171566A1 Amplitude equalizer |
| 07/17/1984 | US4461026 Radio with audio graphic equalizer |
| 07/17/1984 | CA1171146A1 Active equalizer |
| 07/03/1984 | US4458362 Automatic time domain equalization of audio signals |
| 07/03/1984 | US4458210 Distortion compensated cross-coupled differential amplifier circuit |
| 06/26/1984 | US4457014 Signal transfer and system utilizing transmission lines |
| 06/20/1984 | EP0111173A2 Circuit arrangement for controlling the gain of preamplifier stages |
| 06/19/1984 | US4455674 Amplitude-modulated signal receiver having a variable Q circuit |
| 06/19/1984 | US4455535 Frequency characteristic adjusting apparatus |
| 06/05/1984 | US4453255 Characteristic control system for a digital equalizer |
| 05/29/1984 | US4451795 Circuit arrangement with controllable transfer characteristic at higher frequencies |
| 05/01/1984 | US4446493 Variable frequency-response equalizer |
| 04/17/1984 | CA1165828A1 Circuit arrangement comprising two cross-coupled differential amplifiers |
| 04/03/1984 | CA1164960A1 Digitally controlled bandwidth sampling filter- detector |
| 03/29/1984 | WO1984001256A1 Noiseless connection and disconnection of audio effects modules |
| 03/27/1984 | US4439739 Circuit arrangement with electronically controllable transfer characteristic |
| 03/20/1984 | US4438414 Tone control circuit |
| 03/20/1984 | US4438409 Active equalizer |
| 02/21/1984 | US4433301 Equalization preamplifier with high frequency gain peaking |
| 02/14/1984 | US4432097 Tone control circuit |
| 02/07/1984 | US4430626 Networks for the log domain |
| 01/17/1984 | US4426727 FM Noise reducing circuit |
| 12/27/1983 | US4423289 Signal processing systems |
| 12/20/1983 | US4422109 Magnetic recording and reproducing apparatus automatically adjustable to each individual magnetic tape |
| 12/20/1983 | US4422108 Tape recorder |
| 12/20/1983 | US4422095 Video tone control circuit |
| 12/20/1983 | US4422048 Multiple band frequency response controller |
| 12/20/1983 | US4422047 Solid state autotune power amplifier |
| 11/29/1983 | CA1157781A2 Method and system of controlling sound and effects devices by a film strip |
| 11/23/1983 | EP0094762A2 Automatic time domain equalization of audio signals |
| 11/22/1983 | US4417215 Tuned analog network |
| 11/22/1983 | CA1157383A1 Digitally controlled equalizer |
| 10/25/1983 | CA1155926A1 Radio with audio graphic equalizer |
| 10/12/1983 | EP0091160A1 Circuit for amplifying and/or attenuating a signal |
| 10/05/1983 | EP0090464A1 Digital tone control arrangement |
| 09/28/1983 | EP0089639A2 Electronic apparatus, especially for amplifier arrangements for musical instruments |
| 09/20/1983 | US4406019 Selectivity means in amplitude modulated radio receivers |
| 09/20/1983 | US4405836 Signal equalization selector |
| 09/20/1983 | US4405832 Circuit for distorting an audio signal |
| 09/13/1983 | US4404529 Lowpass filter with electronic control of cutoff and resonance |
| 09/13/1983 | CA1153702A1 Dynamic speaker equalizer |
| 09/06/1983 | US4403201 Bandpass filter circuit |
| 08/31/1983 | EP0087175A1 Circuit for electronically controlling amplification |
| 08/31/1983 | EP0086839A1 High-sensitivity fm demodulating system |
| 08/31/1983 | EP0086838A1 High-sensitivity fm signal demodulation system |
| 08/23/1983 | US4400583 Complete audio processing system |
| 08/16/1983 | US4399561 Variable capacitance circuit |
| 08/16/1983 | US4399326 Audio signal processing system |
| 08/02/1983 | US4396806 Hearing aid amplifier |
| 07/27/1983 | EP0084402A1 Method and apparatus for operating a loudspeaker below resonant frequency |
| 07/21/1983 | WO1983002536A1 Method and apparatus for operating a loudspeaker below resonant frequency |
| 07/12/1983 | US4393275 Hearing aid with controllable wide range of frequency response |
| 07/05/1983 | US4392114 Audio device having a tone control cancelling circuit |
| 06/21/1983 | US4389683 Switch-tuned filters |
| 06/21/1983 | US4389620 Current transfer amplifier |
| 06/08/1983 | EP0080538A1 Amplifier printed circuit board and mounting system therefor |
| 05/31/1983 | CA1147267A1 Gain control circuit for noise reduction system |
| 05/25/1983 | EP0079825A2 Improved selectivity means in amplitude modulated radio receivers |
| 05/24/1983 | CA1147062A1 Digital gain control apparatus |
| 05/17/1983 | CA1146474A1 Current transfer amplifier |
| 05/03/1983 | US4382158 Tone control of the operational type |
| 04/06/1983 | EP0075615A1 Sound field simulation system and method for calibrating same |
| 04/05/1983 | US4379207 Automatic noise eliminating device for an FM receiver |
| 03/17/1983 | WO1983000974A1 High-sensitivity fm demodulating system |
| 03/17/1983 | WO1983000973A1 High-sensitivity fm demodulating system |
| 03/16/1983 | EP0074137A1 Apparatus for electroacoustic energy conversion |
| 03/03/1983 | WO1983000787A1 System for maximum efficiency transfer of modulated signals utilizing line systems |
| 02/22/1983 | CA1141831A1 Composite video automatic gain control amplifier |
| 02/01/1983 | US4371846 Bandwidth control circuitry for radar i-f amplifier |
| 01/25/1983 | US4370681 Gain control circuit for noise reduction system |
| 01/11/1983 | US4368435 System for maximum efficient transfer of modulated audio frequency energy |
| 12/08/1982 | EP0066515A1 Apparatus to generate noise and device to control the acoustic insulation in buildings |
| 12/07/1982 | US4363001 Digital gain control apparatus |
| 11/17/1982 | EP0064819A1 An FM signal demodulation system |
| 11/16/1982 | US4359601 Audio control system |
| 11/09/1982 | US4358737 Digitally controlled bandwidth sampling filter-detector |
| 10/26/1982 | US4356568 Receptive condition automatic selection device for FM receiver |
| 10/26/1982 | US4356567 Radio receiver with bandwidth switching |
| 10/26/1982 | US4356454 Equalizer amplifier |
| 10/12/1982 | US4354162 Wide dynamic range control amplifier with offset correction |
| 10/12/1982 | US4354160 Amplitude equalizer |
| 09/21/1982 | CA1132210A1 Equalizing network |
| 09/07/1982 | CA1131356A1 Analog recording on magnetic media |
| 09/07/1982 | CA1131355A1 Signal processing circuit |