Dual-step sound pattern matching
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United States of America Patent
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-
Oct 4, 1988
Grant Date -
N/A
app pub date -
Apr 30, 1986
filing date -
May 1, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sound or speech recognition system is made faster by first using data-reduced patterns to find candidates in preliminary testing, and then making a final decision by testing against full-data patterns. Specifically, a signal is transformed to a time-sequence of spectral vectors, which forms a full-data pattern. Then, a predetermined number of vectors representing the beginning or front-end of the signal are duplicated and summed to form a sum spectral vector which is used as the data-reduced pattern for preliminary testing.
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