Speaker independent speech recognition system and method
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United States of America Patent
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-
Aug 31, 1999
Grant Date -
N/A
app pub date -
Oct 1, 1997
filing date -
Oct 1, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An improved method of training a SISRS uses less processing and memory resources by operating on vectors instead of matrices which represent spoken commands. Memory requirements are linearly proportional to the number of spoken commands for storing each command model. A spoken command is identified from the set of spoken commands by a command recognition procedure (200). The command recognition procedure (200) includes sampling the speaker's speech, deriving cepstral coefficients and delta-cepstral coefficients, and performing a polynomial expansion on cepstral coefficients. The identified spoken command is selected using the dot product of the command model data and the average command structure representing the unidentified spoken command.
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