Frequency domain format enhancement
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United States of America Patent
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Sep 30, 2008
Grant Date -
Apr 26, 2007
app pub date -
Aug 31, 2006
filing date -
Apr 2, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A method for enhancing speech prediction coefficient signals, including: a) receiving a set of prediction coefficient signals; b) calculating a set of amplitude spectrum coefficient signals based on the prediction coefficient signals; c) calculating a set of enhancement coefficient signals based on the amplitude spectrum coefficient signals; d) calculating a set of enhanced autocorrelation coefficient signals based on the enhancement coefficient signals; e) converting at least some of the enhanced autocorrelation coefficient signals into reflection coefficient signals; f) testing the range of values of the reflection coefficient signals; and g) converting at least some of the tested reflection coefficient signals into prediction coefficient signals.
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