Dynamic noise reduction and spectral restoration system

Details Dynamic noise reduction and spectral restoration system Dynamic noise reduction and spectral restoration system

1990-02-16

1991-09-17

Isen, Forester W.

Electrical audio signal processing systems and devices

Noise or distortion suppression

Interpolation

381106, 381 98, 333 14, 333 28T, H04B 1500

Patent

active

050502174

ABSTRACT:
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. Further, although the system often adds high frquency energy to the audio, it does not increase the perceived noise level and is free from audible noise modulation.

REFERENCES:
patent: 4562591 (1985-12-01), Stikvoort
patent: 4609878 (1986-09-01), Rodgers
patent: 4696044 (1987-09-01), Waller, Jr.
patent: 4704726 (1987-11-01), Gibson
patent: 4953216 (1990-08-01), Beer

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