发明名称 |
Separating speech waveforms into periodic and aperiodic components, using artificial waveform generated from pitch marks |
摘要 |
According to one embodiment, in a speech processing device, an extractor windows a part of the speech signal and extracts a partial waveform. A calculator performs frequency analysis of the partial waveform to calculate a frequency spectrum. An estimator generates an artificial waveform that is a waveform according to an interval between the pitch marks for each harmonic component having a frequency that is a predetermined multiple of a fundamental frequency of the speech signal and estimates harmonic spectral features representing characteristics of the frequency spectrum of the harmonic component from each of the artificial waveforms. A separator separates the partial waveform into a periodic component produced from periodic vocal-fold vibration as an acoustic source and an aperiodic component produced from aperiodic acoustic sources other than the vocal-fold vibration by using the respective harmonic spectral features and the frequency spectrum of the partial waveform.
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申请公布号 |
US8438014(B2) |
申请公布日期 |
2013.05.07 |
申请号 |
US201213358702 |
申请日期 |
2012.01.26 |
申请人 |
MORITA MASAHIRO;LATORRE JAVIER;KAGOSHIMA TAKEHIKO;KABUSHIKI KAISHA TOSHIBA |
发明人 |
MORITA MASAHIRO;LATORRE JAVIER;KAGOSHIMA TAKEHIKO |
分类号 |
G10L25/90;G10L25/93 |
主分类号 |
G10L25/90 |
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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