디지털 보청기를 위한 다중 마이크로폰을 이용한 잡음제거 성능 연구
A Study on the Performance of Noise Reduction using Multi-Microphones for Digital Hearing Aids
1
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
In this study, we analyzed the reduction of noise in a noise environment using 2, 3, 4 or 5 microphones in digital hearing aids. In order to be able to use this in actual digital hearing aids, we made the experiment microphone set similar to the behind-the-ear type (BTE) and then recorded the signal accordingly, with each situation. With the recorded signals, we reduced the noise in each signal by a noise reduction algorithm using multi-microphones. As a result, in the case of By comparing the SNR (Signal to Noise Ratio) and PESQ (Perceptual Evaluation of Speech) measurements, before and after the noise reduction, the results showed that the improvement in performance was highest when three or four microphones were used. Generally, when two or more microphones were used, we found that as the number of microphones increased there was an increase in performance.
Abstract
In this study, we analyzed the reduction of noise in a noise environment using 2, 3, 4 or 5 microphones in digital hearing aids. In order to be able to use this in actual digital hearing aids, we made the experiment microphone set similar to the behind-the-ear type (BTE) and then recorded the signal accordingly, with each situation. With the recorded signals, we reduced the noise in each signal by a noise reduction algorithm using multi-microphones. As a result, in the case of By comparing the SNR (Signal to Noise Ratio) and PESQ (Perceptual Evaluation of Speech) measurements, before and after the noise reduction, the results showed that the improvement in performance was highest when three or four microphones were used. Generally, when two or more microphones were used, we found that as the number of microphones increased there was an increase in performance.
참고문헌 (16)
- 대한청각학회, "청각검사지침" (2008), 학지사
- Schaub, "Digital Hearing Aids", Thieme, ~ (2008)
- A.M.Kondoz, "Digital Speech Coding for Low Bit Rate Communication Systems Second Edition" (2004), John Wiley & Sons
- J.Chen, "Theoretical comparisons of dual microphone systems in Proceeding. (ICASSP '04). IEEE International Conference on", Acoustics, Speech, and Signal Processing, 4, pp.63~75 (2004)
- J.Bernard Widrow, "Adaptive noise cancelling:principles applications", Proceeding of the IEEE, 63(12), pp.1692~1716 (1975)
- L.Krasny, "Voice activity detector for microphone array processing in hand-free systems", Sensor Array and Multichannel Signal Processing Workshop Proceedings, pp.224~228 (2002)
- G.W.Elko, "Adaptive noise cancellation with directional microphones", Applications of Signal Processing to Audio and Acoustics,1997 IEEE ASSP Workshop on, pp.4~22 (1997)
- Lloyd J. Griffiths, "An alternative approach to linearly constrained adaptive beamforming", IEEE Transactions on antennas and propagation, AP-30(1) (1982)
- 황석윤, "Dual과 Triple 배열 신호처리에 따른 후방간섭신호 제거 효과 비교", 언어치료연구, 16(1), pp.165~174 (2007), 한국언어치료학회
- 이윤창, "Multi-band power Subtraction과 Wavelet Packets Decomposition을 이용한 개선된 음성 향상 방법", 한국통신학회논문지C, 31(6), pp.589~602 (2006), 한국통신학회
- 방동혁, "디지털 보청기에서 마이크로폰 어레이를 이용한 잡음제거", 전기학회논문지ABCD, 58(4), pp.857~866 (2009), 대한전기학회
- "Rice Univ.DSP group homepage"[URL]
- Simon Dolco, "GSVD-Based Optimal Filtering for Single and Multimicrophone Speech Enhancement", IEEE Transactions on signal processing, 50(9) (2002)
- "Perceptual evaluation of speech quality(PESQ), an objective method for end-to-end speech quality assessment of narrow-band telephone networks and speech codecs", ITU-T P.862, ~ (2001)
- 정옥조, "VoIP 통화품질 표준기술 동향", 정보통신기술협회(TTA)저널, (92) (2004)
- 박미라, "EXCEL을 이용한 의학데이터의 통계분석" (2002), 자유아카데미