发明名称 |
SPEECH RECOGNITION SYSTEM |
摘要 |
An acoustic signal processing circuit extracts input speech pattern data and subsidiary feature data from an input speech signal. The input speech pattern data comprise frequency spectra, whereas the subsidiary feature data comprise phoneme and acoustic features. These data are then stored in a data buffer memory. The similarity measures between the input speech pattern data stored in the data buffer memory and reference speech pattern data stored in a dictionary memory are computed by a similarity computation circuit. When the largest similarity measure exceeds a first threshold value and when the difference between the largest similarity measure and the second largest measure exceeds a second threshold value, category data of the reference pattern which gives the largest similarity measure is produced by a control circuit to correspond to an input speech. When recognition cannot be performed, the categories of the reference speech patterns which respectively give the largest to mth similarity measures are respectively compared with the subsidiary feature data. In this manner, subsidiary feature recognition of the input voice is performed by a subsidiary feature recognition section. |
申请公布号 |
EP0086589(B1) |
申请公布日期 |
1987.07.15 |
申请号 |
EP19830300492 |
申请日期 |
1983.01.31 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
WATANABE, SADAKAZU;SHINODA, HIDENORI;NITTA, TSUNEO;TAKEBAYASHI, YOICHI;HIRAI, SHOUICHI;SAKATA, TOMIO;UEHARA, KENSUKE;TAKAHASHI, YASUO;ASADA, HARUO C/O PROF. P.H. WINSTON THE ARTIFICIAL |
分类号 |
G10L15/10;G10L11/00;G10L15/00;G10L15/28;(IPC1-7):G10L5/00;G10L7/00 |
主分类号 |
G10L15/10 |
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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