发明名称 |
SPEECH RECOGNITION DEVICE, SPEECH RECOGNITION METHOD, AND COMPUTER READABLE MEDIUM |
摘要 |
The present invention can increase the types of noises that can be dealt with enough to enable speech recognition with a speech recognition rate of high accuracy. A speech recognition device of the present invention performs processes of: storing, in a manner to relate them to each other, a suppression coefficient representing a noise suppression amount and an adaptation coefficient representing an adaptation amount of a noise model, where the noise model is generated on the basis of a predetermined noise and is to be compounded (synthesized) to a clean acoustic model generated on the basis of a voice including no noise; estimating noise from an input signal; suppressing from the input signal a portion of the estimated noise of an amount specified by a suppression amount specified on the basis of the suppression coefficient; generating an adapted acoustic model which is noise-adapted, by compounding (synthesizing) the clean acoustic model with a noise model generated on the basis of the estimated noise in accordance with an adaptation amount specified on the basis of the adaptation coefficient; and recognizing voice on the basis of the noise-suppressed input signal and the generated adapted acoustic model.
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申请公布号 |
US2013231929(A1) |
申请公布日期 |
2013.09.05 |
申请号 |
US201113883716 |
申请日期 |
2011.11.10 |
申请人 |
KOMEJI SHUJI;ARAKAWA TAKAYUKI;KOSHINAKA TAKAFUMI;NEC CORPORATION |
发明人 |
KOMEJI SHUJI;ARAKAWA TAKAYUKI;KOSHINAKA TAKAFUMI |
分类号 |
G10L15/20;G10L15/065;G10L21/02 |
主分类号 |
G10L15/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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