5th International Conference on Spoken Language Processing

Sydney, Australia
November 30 - December 4, 1998

Speech Recognition Using the Probabilistic Neural Network

Raymond Low, Roberto Togneri

The University of Western Australia, Australia

A novel technique for speaker independent automated speech recognition is proposed. We take a segment model approach to Automated Speech Recognition (ASR), considering the trajectory of an utterance in vector space, then classify using a modified Probabilistic Neural Network (PNN) and maximum likelihood rule. The system performs favourably with established techniques. Our system achieves in excess of 94% with isolated digit recognition, 88% with isolated alphabetic letters, and 83% with the confusable /e/ set. A favourable compromise between recognition accuracy and computer memory and speech can also be reached by performing clustering on the training data for the PNN.

Full Paper

Bibliographic reference.  Low, Raymond / Togneri, Roberto (1998): "Speech recognition using the probabilistic neural network", In ICSLP-1998, paper 0645.