Signal processing device using several different filterings, especially for audio-frequency coding of voice signals
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United States of America Patent
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Sep 10, 1996
Grant Date -
N/A
app pub date -
Apr 15, 1994
filing date -
Apr 16, 1993
priority date (Note) -
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Abstract
The device comprises a first input (E1) and a first output (S1) which are capable respectively of receiving and delivering a plurality of analog signals and corresponding digital signals having different predetermined types of transmission specifications and associated with substantially homothetic predetermined elementary frequency attenuation templates. A second input (E2) and a second output (S2) are also provided, capable respectively of receiving and delivering a plurality of digital signals and corresponding analog signals having different predetermined types of transmission specifications, associated with different, substantially homothetic predetermined elementary frequency attenuation templates, as well as first and second signal conversion means arranged respectively between the first input and output and between the second input and output and including a single digital filter (6) in common, having a single frequency attenuation template which is compatible with all the elementary templates.
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Family
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