Method for processing audio signals in a sub-band coding system

Details Method for processing audio signals in a sub-band coding system Method for processing audio signals in a sub-band coding system

1991-08-27

1994-01-18

Knepper, David D.

G10L 500

Patent

active

052805611

ABSTRACT:
Improvements in a method of processing wideband audio signals by a sub-band coding system are provided. Linear codes having frequency components in which audio signal power is concentrated are selected from linear codes separated into a plurality of frequency band components and decoded. The presence or absence of sound in the audio signals is detected by referring to the selected linear codes and/or a gain coefficient is determined. Level control of the decoded linear codes is performed by using the thus determined gain coefficient.

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"Basic Digital Switching" by Shinichi Aizawa, OHM Co. Ltd., pp. 121-124 (FIG. 2.51), Jan. 10, 1983.

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