Digital audio reproduction system with improved noise suppressio

Details Digital audio reproduction system with improved noise suppressio Digital audio reproduction system with improved noise suppressio

1993-06-01

1995-03-14

Hajec, Donald

Dynamic magnetic information storage or retrieval

Converting an analog signal to digital form for recording;...

360 65, G11B 509, G11B 5035

Patent

active

053981391

ABSTRACT:
A digital audio reproduction system for compact discs, digital audio tapes and other similar systems suppresses digital noise present in the frequency band immediately above the audio band. Digital preprocessing combined with narrow output filters result in significant noise suppression without adverse distortion of the desired audio signal. The digital preprocessor may be combined with digital oversampling filters into a single integrated circuit or microprocessor.

REFERENCES:
patent: 5107480 (1992-04-01), Naus
patent: 5210732 (1993-05-01), Suenaga et al.

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