Voice recognition device using linear predictive coding
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United States of America Patent
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Mar 24, 1998
Grant Date -
N/A
app pub date -
Dec 15, 1995
filing date -
Feb 7, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sound processor (12) calculates first through third parameters according to an LPC cepstrum, a primary delta cepstrum and a secondary delta cepstrum. The first parameter catches a static characteristic, the second parameter catches a dynamic characteristic with time, and the third parameter catches a locally dynamic characteristic with time. A word dictionary (14) stores first through third parameters for a standard pattern. Hence, a DP matching unit (16) recognizes a voice based on a distance between an input voice of the three parameters and the standard pattern.
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