Method and system for robust processing of speech classifier

Abstract

The present disclosure relates to a method and system for performing speech classification for an audio signal. The method comprises obtaining the audio signal comprising a sequence of audio frames and determining, for each audio frame, a first speech confidence metric using a first speech classifier. For each given audio frame of at least a subset of the sequence of audio frames the method comprises classifying each respective audio frame of a first context window associated with the given audio frame as a speech-frame or non-speech frame by comparing the first speech confidence metric of the respective audio frame to a first predetermined threshold, determining an adaptive threshold based on the number of speech frames of the first context window and determining a first binary speech classification indicator for the given audio frame based on the first speech confidence metric and the adaptive threshold.

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