Apparatus and method for discriminating speech, and computer readable medium

Patent metadata

Field	Value
Publication number	US-9330682-B2
Application number	US-201113232469-A
Country	US
Kind code	B2
Filing date	Sep 14, 2011
Priority date	Mar 11, 2011
Publication date	May 3, 2016
Grant date	May 3, 2016

Abstract

According to one embodiment, an apparatus for discriminating speech/non-speech of a first acoustic signal includes a weight assignment unit, a feature extraction unit, and a speech/non-speech discrimination unit. The first acoustic signal includes a user's speech and a reproduced sound. The reproduced sound is a system sound having a plurality of channels reproduced from a plurality of speakers. The weight assignment unit is configured to assign a weight to each frequency band based on the system sound. The feature extraction unit is configured to extract a feature from a second acoustic signal based on the weight of each frequency band. The second acoustic signal is the first acoustic signal in which the reproduced sound is suppressed. The speech/non-speech discrimination unit is configured to discriminate speech/non-speech of the first acoustic signal based on the feature.

First claim

What is claimed is:

1. A speech recognition system, comprising:
a plurality of speakers that reproduce a system sound having a plurality of channels;
a microphone that generates a first acoustic signal including a user's speech and an echo of the system sound;
an echo canceller that generates a second acoustic signal by suppressing the echo included in the first acoustic signal;
a monophonization unit that generates a third acoustic signal by monophonizing the system sound a…

Assignees

• Suzuki Kaoru
• Sakai Masaru
• Kida Yusuke
• Toshiba Kk

Inventors

• Suzuki Kaoru
• Sakai Masaru
• Kida Yusuke

Classifications

• G10L25/78 Primary

  Physics · mapped topic

• G10L25/18

  Physics · mapped topic

• H04M9/082

  Electricity · mapped topic

• G10L2021/02082

  Physics · mapped topic