Method of training neural networks used for speech recognition

Abstract From the Canadian patent

A speech-recognition system, for recognizing isolated words includes pre-processing circuitry, (3) for performing analog-to-digital conversion and cepstral analysis, and, a plurality of neural networks (12-14) which compute discriminant functions, based on polynomial expansions. The system may be implemented using either hardware or software or, a combination thereof. The speech waveform of a spoken word is analyzed, and converted into a sequence of data frames. The sequence of frames is, partitioned into data blocks and the, data blocks are then broadcast to a plurality of neural networks. Using, the data blocks the neural networks, compute polynomial expansions. The output of the neural …