RESEARCH TOPICS - SPEECH RECOGNITION

Introduction

Speech recognition is a processing which extracts character data by recognizing utterances.
By this technology, we can operate robots or computers by our voices.

HMM speech recognition

Generally, speech recognition is studied separately on acoustic models with acoustic characteristics and language models with language characteristics.
HMM Speech recognition is a technology of speech recognition which studied in our laboratory well, and it models acoustic models with based on probability models called HMM(Hidden Markov Model).

Research Field

Sequential Speech Recognition

This technology analyzes speeches and converts to sentences.
This is a research for getting better speech recognition accuracy.

Speaker Adaptation

The property of human voices have a great deal of characteristics in sex or age, so it is difficult for us to recognize it at high accuracy, however, we hope more capable system by specializing in speech recognition system applied to particular target.
This is a research in terms of specializing in systems for particular speaker.

Speaker Identification

This is a technology that identifies whose voice input sounds are or judges whether preregistered speakers or not.
This is a research for using automatic speech archives for each speakers at security systems or meetings, and so on.