Noise reduction circuit for reducing pulse noise in audio signal

Details Noise reduction circuit for reducing pulse noise in audio signal Noise reduction circuit for reducing pulse noise in audio signal

1986-04-30

1987-11-03

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Signal switching

360 67, G11B 1514, G11B 502

Patent

active

047046422

ABSTRACT:
A noise reduction circuit is provided with a slew rate detection circuit for detecting a slew rate of a reproduced audio signal, and variably controls a pulse width of a hold signal depending on the detected slew rate. The noise reduction circuit successively produces the reproduced audio signal with a predicted level other than a level of pulse noise included in the reproduced audio signal during a time period corresponding to the pulse width of the hold signal, so as to obtain a reproduced audio signal in which the pulse noise has been eliminated.

REFERENCES:
patent: 4559567 (1985-12-01), Maruichi et al.

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