发明名称 |
SIGNAL ANALYSIS DEVICE, SIGNAL PROCESSING DEVICE, SPEECH RECOGNITION DEVICE, SIGNAL ANALYSIS PROGRAM, SIGNAL PROCESSING PROGRAM, SPEECH RECOGNITION PROGRAM, RECORDING MEDIUM, AND ELECTRONIC DEVICE |
摘要 |
<p>A signal analysis device includes: frequency band division means for dividing an input signal into a signal of a plurality of frequency bands; band energy extraction means for extracting band energy in each band for the input signal divided into respective bands; and normalization means for normalizing the extracted band energy for each band and obtaining normalized band energy for each band. With this configuration, it is possible to obtain a stable speech recognition accuracy even under a high-noise environment. Moreover, it is possible to obtain a stable speech recognition accuracy even when speech having no noise section is input or when the noise level is gradually changed during vocalization.</p> |
申请公布号 |
WO2005020212(A1) |
申请公布日期 |
2005.03.03 |
申请号 |
WO2004JP10841 |
申请日期 |
2004.07.29 |
申请人 |
SHARP KABUSHIKI KAISHA;AKABANE, TOSHIO |
发明人 |
AKABANE, TOSHIO |
分类号 |
G10L15/02;G10L11/00;G10L15/20;G10L21/02;(IPC1-7):G10L21/02 |
主分类号 |
G10L15/02 |
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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