A real-time, isolated-word, speech recognition system for dictation transcription

The Speech Recognition Group at IBM, Yorktown Heights, has recently completed the implementation of an experimental, real-time, isolated-word, speech recognition system with a 5,000-word vocabulary which can be used for dictating office correspondence. Typical recognition accuracy is greater than 94% correct word recognition for words within the vocabulary. We first describe the architecture of this system, and then give some recent experimental results obtained with it for read and spontaneously dictated speech from five speakers.