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Voice activity detection 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G10L-005/00
출원번호 US-0952147 (1992-09-28)
우선권정보 GB-0005795 (1988-03-11); GB-0013346 (1988-08-06); GB-0020105 (1988-08-24)
국제출원번호 PCT/GB89/00247 (1989-03-10)
§371/§102 date 19900815 (19900815)
국제공개번호 WO-8908910 (1989-09-21)
발명자 / 주소
  • Freeman Daniel K. (Ipswich GB2) Boyd Ivan (Ipswich GB2)
출원인 / 주소
  • British Telecommunications public limited company (London GB2 03)
인용정보 피인용 횟수 : 100  인용 특허 : 0

초록 ▼

Voice activity detector (VAD) for use in an LPC coder in a mobile radio system uses autocorrelation coefficient R0, R1 . . . of the input signal, weighted and combined, to provide a measure M which depends on the power within that part of the spectrum containing no noise, which is thresholded agains

대표청구항 ▼

Voice activity detection apparatus comprising: (i) means for receiving an electrical input signal in which the presence or absence of signals representing speech is to be detected; (ii) means responsive to said means for receiving for periodically adaptively generating an electrical signal represent

이 특허를 인용한 특허 (100)

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