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논문 기본 정보

자료유형
학술저널
저자정보
방동혁 (인하대학교) 길세기 (인하대학교) 강현덕 (인하대학교) 윤광섭 (인하대학교) 이상민 (인하대학교)
저널정보
대한전기학회 전기학회논문지 전기학회논문지 제58권 제4호
발행연도
2009.4
수록면
857 - 866 (10page)

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초록· 키워드

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In this paper, a noise cancellation-method using microphone array for digital hearing aids is proposed. The microphone array is located around the ear of a dummy. Speech sound is generated from the forward speaker positioned in the front of the dummy and noise sound is generated from the backward speaker. The speech and noise are mixed in the air space and entered into the microphones. VAD(voice activity detector) and ANC(adaptive noise cancellation) methods were used to eliminate noise in the sound of the microphones. 10 two-syllable words and 4 sentences were used for speech signals. Babble and car interior noise were used for noise signals. The performance of the proposed algorithm was evaluated by SNR(signal-to-noise ratio) and PESQ-MOS(perceptual evaluation of speech quality-mean opinion score). In babble noise condition, SNR was improved as much as 7.963±1.3620㏈ and 3.968±0.6659㏈ for words and sentences respectively. In the case of car interior noise, SNR was improved as 10.512±2.0665㏈ and 6.000±1.7642㏈ for words and sentences respectively. PESQ-MOS of the babble noise was improved as much as 0.1722±0.0861 score for words and 0.083±0.0417 score for sentences. And PESQ-MOS of the car interior noise was improved as 0.2661±0.0335 score and 0.040±0.0201 score for words and sentences respectively. It is verified that the proposed algorithm has a good performance in noise cancellation of microphone array for digital hearing aids.

목차

Abstract
1. 서론
2. 디지털 보청기용 마이크로폰 어레이 배열
3. 제안 알고리즘
4. 실험 구성 및 실험 환경
5. 실험결과
6. 결론
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UCI(KEPA) : I410-ECN-0101-2010-560-002243770