Preprocess Audio Files for Phonetic Phrase Search

The following schema describes the preprocessing of an audio file to create a phoneme time track file required for phonetic phrase search.

[createFmd]
0 = a, ts <- audio(MONO, input)
1 = f <- frontend(_, a)
2 = nf <- normalizer(_, f)
3 = output <- phraseprematch(WRITE, nf, ts)
0 The audio module processes the mono audio.
1 The frontend module converts the audio data into speech front-end frame data.
2 The normalizer module normalizes the frame data from 1 (f).
3 The phraseprematch module processes the normalized frame data from 2 (nf) to generate phone-track information, which is written to the .fmd file for phonetic phrase search.

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