Hierarchical Neural Network Structures for Phoneme Recognition (Signals and Communication Technology)

Vasquez, Daniel; Gruhn, Rainer; Minker, Wolfgang

ISBN 10: 3642432107 / ISBN 13: 9783642432101

Verlag: Springer, 2014

In. Bestandsnummer des Verkäufers ria9783642432101_new

Inhaltsangabe:

In this book, hierarchical structures based on neural networks are investigated for automatic speech recognition. These structures are mainly evaluated within the phoneme recognition task under the Hybrid Hidden Markov Model/Artificial Neural Network (HMM/ANN) paradigm. The baseline hierarchical scheme consists of two levels each which is based on a Multilayered Perceptron (MLP). Additionally, the output of the first level is used as an input for the second level. This system can be substantially speeded up by removing the redundant information contained at the output of the first level.

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In this book, hierarchical structures based on neural networks are investigated for automatic speech recognition. These structures are evaluated on the phoneme recognition task where a Hybrid Hidden Markov Model/Artificial Neural Network paradigm is used. The baseline hierarchical scheme consists of two levels each which is based on a Multilayered Perceptron. Additionally, the output of the first level serves as a second level input. The computational speed of the phoneme recognizer can be substantially increased by removing redundant information still contained at the first level output. Several techniques based on temporal and phonetic criteria have been investigated to remove this redundant information. The computational time could be reduced by 57% whilst keeping the system accuracy comparable to the baseline hierarchical approach.

Bibliografische Details

Titel: Hierarchical Neural Network Structures for ...
Verlag: Springer
Erscheinungsdatum: 2014
Einband: Softcover
Zustand: New