| Patent Number |
Title Of Patent |
Date Issued |
| 5444788 |
Audio compressor combining feedback and feedfoward sidechain processing |
August 22, 1995 |
| An audio compressor having both a feedback compressor and a feedforward compressor. The feedback compressor operates so as to provide envelope detection. A sidechain processor which receives an input from the feedback path includes a non-linear low-pass filter and a non-linear amplifier. |
| 5282252 |
Audio equalizer providing reciprocal equalization plus infinite-depth notch |
January 25, 1994 |
| Audio equalizer circuit for adjusting the amount of boost and cut. The circuit uses a combination negative feedback, positive feedback, negative feed-forward and positive feed-forward resulting in boost and cut characteristics which are entirely reciprocal and which, nonetheless prov |
| 5168526 |
Distortion-cancellation circuit for audio peak limiting |
December 1, 1992 |
| Apparatus for reducing distortion in a peak limited audio siganl. The amount of low-frequency spectral energy in the input audio signal is determined for a peak limited signal and used to control low-frequencies in the output audio signal. Identical low-pass filters with cut-off freq |
| 5050217 |
Dynamic noise reduction and spectral restoration system |
September 17, 1991 |
| An audio processor consisting of a "single-ended" dynamic noise reduction system cascaded and cross-coupled with a program-adaptive dynamic equalizer. The audio at the output has a consistent subjective spectral texture even if the spectral texture of the input audio varies widely. F |
