[특허]Voice activity detection driven noise remediator

Voice activity detection driven noise remediator 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G10L-003/02 G10L-009/00
출원번호	US-0188294 (1994-01-28)
발명자 / 주소	Janiszewski Thomas John (Clinton NJ) Recchione Michael Charles (Nutley NJ)
출원인 / 주소	Lucent Technologies Inc. (Murray Hill NJ 02)
인용정보	피인용 횟수 : 56 인용 특허 : 0

초록 ▼

A method and apparatus for improving sound quality in a digital cellular radio system receiver. A voice activity detector uses an energy estimate to detect the presence of speech in a received speech signal in a noise environment. When no speech is present the system attenuates the signal and inserts low pass filtered white noise. In addition, a set of high pass filters are used to filter the signal based upon the background noise level. This high pass filtering is applied to the signal regardless of whether speech is present. Thus, a combination of signal attenuation with insertion of low pass filtered white noise during periods of non-speech, along with high pass filtering of the signal, improves sound quality when decoding speech which has been encoded in a noisy environment.

대표청구항 ▼

A receiving apparatus for processing a received encoded signal, said received encoded signal comprising a speech component and a noise component, said apparatus comprising: a speech decoder for receiving said encoded signal and generating a decoded signal, said decoded signal comprising a speech component and a noise component; an energy estimator connected to said speech decoder for receiving said decoded signal and for generating an estimated energy signal representing the acoustic energy of said decoded signal; a noise estimator connected to said energy estimator for receiving said estimated energy signal and for generating an estimated noise signal representing the average background noise level in said decoded signal; a high pass filter driver connected to said noise estimator and said speech decoder for receiving said estimated noise signal and said decoded signal, and for high pass filtering said decoded signal based upon said estimated noise signal, and for generating a high pass filtered output signal; a voice activity detector connected to said energy estimator and said noise estimator for receiving said estimated energy signal and said estimated noise signal and for generating a voice detection signal representing whether said decoded signal contains a speech component; an attenuator calculator connected to said voice activity detector for receiving said voice detection signal and for generating an attenuation signal representing the attenuation to be applied to said high pass filtered signal; a noise generator connected to said noise estimator for receiving said estimated noise signal and for generating a comfort noise signal; and a speech attenuator/comfort noise inserter connected to said high pass filter driver, said shaped noise generator, and said attenuator calculator, for receiving said high pass filtered output signal, said comfort noise signal, and said attenuation signal, and for attenuating said high pass filtered output signal and inserting said comfort noise signal into said high pass filtered output signal based upon said attenuation signal, and for generating a processed high pass filtered signal wherein said speech decoder, noise estimator and said voice activity detector are in said receiving apparatus.

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Niemisto, Riitta Elina; Vartiainen, Jukka Petteri, Electronic device speech enhancement.
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Huang,Tai Huei, Energy feature extraction method for noisy speech recognition.
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Lockwood, Philip; Lubiarz, Stephane, Method for detecting speech activity.
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Nicholls Richard Brent ; Wong Chin Pan ; Karanja Martin Thuo ; Doran Patrick Joseph ; Graham David James, Method for detecting speech in a vocoded signal.
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Retali, Dominique, Method of detecting the operation of a voice signal wireless transmission device.
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연합인증

Voice activity detection driven noise remediator 원문보기

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Voice activity detection driven noise remediator 원문보기

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