January 2019
Intermediate to advanced
386 pages
11h 13m
English
book
Python Deep Learning - Second Edition
by Ivan Vasilev, Daniel Slater, Gianmario Spacagna, Peter Roelants, Valentino Zocca
Content preview from Python Deep Learning - Second Edition
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Acoustic model
In speech recognition, we want to output the words being spoken as text. We can do this by learning a time-dependent model that takes in a sequence of audio features, as described in the previous section, and outputs a sequential distribution of possible words being spoken. This model is called the acoustic model.
The acoustic model tries to model the likelihood that a sequence of audio features was generated by a sequence of words or phonemes: P (audio features | words) = P (audio features | phonemes) * P (phonemes | words).
A typical speech recognition acoustic model, before deep learning became popular, would use hidden Markov models (HMMs) to model the temporal variability of speech signals (http://mi.eng.cam.ac.uk/~mjfg/mjfg_NOW.pdf ...
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