Methods and devices for noise conditioning signals representativ

Details Methods and devices for noise conditioning signals representativ Methods and devices for noise conditioning signals representativ

1997-07-03

2000-02-15

Voeltz, Emanuel Todd

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704223, G01L 300

Patent

active

060263563

ABSTRACT:
The present invention relates to methods and devices for processing data frames representative of audio information in digitized and compressed form. The method comprises the steps of classifying successive data frames into frames containing speech sounds and non-speech sounds, altering parameters of the data frames identified as containing non-speech sounds for eliminating or at least substantially reducing artifacts that distort the acoustic background noise. In addition, the data frame identified as containing non-speech sounds are low-pass filtered. Finally, a signal level compensation is effected to avoid undesired fluctuations in the signal level.

REFERENCES:
patent: 5485522 (1996-01-01), Solve et al.
patent: 5642464 (1997-06-01), Yue et al.

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