PROCESSING UNIT, SPEECH RECOGNITION APPARATUS, SPEECH RECOGNITION SYSTEM, SPEECH RECOGNITION METHOD, STORAGE MEDIUM STORING SPEECH RECOGNITION PROGRAM

摘要

A processing unit is provided which executes speech recognition on speech signals captured by a microphone for capturing sounds uttered in an environment. The processing unit has: an initial reflection component extraction portion that extracts initial reflection components by removing diffuse reverberation components from a reverberation pattern of an impulse response generated in the environment; and an acoustic model learning portion that learns an acoustic model for the speech recognition by reflecting the initial reflection components to speech data for learning.