KEYWORD DETECTION IN CONTINUOUS SPEECH USING CONTINUOUS CHRONOUS CORRELATION

摘要

A system for detecting one or more keywords in continuous speech is disclosed wherein a speech processor extracts a plurality of analog speech parameters from the input continuous speech, an STV generator circuit selectively converts the plurality of analog speech parameters into digitized speech samples, an asynchronous correlation circuit continuously correlates sequences of the digitized speech samples with stored reference mask templates representative of subelements of one or more desired keywords in order to produce correlation data, and a decision function circuit is responsive to the correlation data for developing an occurrence decision output for each desired keyword that is detected.