Speech processing technologies and telecommunications applications at NTT

Abstract

The paper describes major research and development in speech recognition and synthesis technologies at NTT from the telecommunications applications viewpoint. Technologies include speaker-dependent, speaker-independent word recognition based on DP matching, speaker-independent word spotting based on HMM, large vocabulary speaker-independent continuous speech recognition based on HMM-LR and high-quality Japanese text-to-speech synthesis. A commercial ANSER system that uses speech recognition and synthesis technologies is also introduced.<>