发明名称 |
Speech section detection apparatus |
摘要 |
A speech section detection apparatus capable of reliably detecting a speech section even for a word containing a glottal stop sound or for a word containing a succession of "s" column sounds or "h" column sounds (sounds in the third column or the sixth column in the Japanese Goju-on Zu syllabary table). A speech signal detected by a microphone is amplified by a line amplifier, and converted by an analog/digital converter into a digital signal which is then stored in a memory. The stored speech signal is fetched into a pitch detector where a speech pitch is extracted by processing the speech signal in time domain. A gate signal generator controls the gate signal based on the speech pitch, and a speech section signal generator controls a speech section signal based on the gate signal. A word can be extracted by segmenting the speech signal stored in the memory in accordance with the speech section signal.
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申请公布号 |
US7231346(B2) |
申请公布日期 |
2007.06.12 |
申请号 |
US20030401107 |
申请日期 |
2003.03.26 |
申请人 |
FUJITSU TEN LIMITED |
发明人 |
YAMATO TOSHITAKA;KITAO HIDEKI;IWAMOTO SHINICHI;IWATA OSAMU;NAKAMURA MASATAKA;OOMOTO YOSHINAO |
分类号 |
G10L15/20;G10L11/02;G10L11/04 |
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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