Low bit rate voice coding method and system
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United States of America Patent
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Jun 12, 1990
Grant Date -
N/A
app pub date -
Mar 7, 1989
filing date -
Mar 8, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This low bit rate voice encoding involves short-term predictive filtering the voice signal s(n) using partial correlation related coefficients derived from pre-emphasized s(n), and deriving a short term signal r(n); then deriving a long-term residual signal e(n) by subtracting a delayed synthesized short term b.r'(n-31 M) from said r(n); and code excited encoding e(n) into codeword references k's and associated gains G's.
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