Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Patent
1997-02-12
1998-06-02
MacDonald, Allen R.
Data processing: speech signal processing, linguistics, language
Speech signal processing
For storage or transmission
704230, G10L 302
Patent
active
057616361
ABSTRACT:
Audio quality perception can be improved in an audio compression system 100 by defining a frequency subband threshold 205. With the frequency subband threshold 205, each frequency subband favorable to the threshold will be allocated at least a predetermined number of bits while frequency subbands unfavorable to the threshold will receive no bit allocations. This determination is made on an audio frame by audio frame basis, or upon change of the audio compression ratio, since changing any of the parameters: bitrate, sampling rate and coding mode changes the compression ratio.
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Bolton Scott Charles
Fiocca James Leonard
Chawan Vijay B.
MacDonald Allen R.
Motorola Inc.
Stockley Darleen J.
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