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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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To estimate sound direction of arrival with a pair of microphones, a method based on Time Difference of Arrival (TDOA) estimation using the Cross Power Spectrum Phase (CPSP) function is largely used due to its simplicity and good performance. In this paper, we investigate CPSP maximum values for various SNRs and adverse environments, and propose a novel method to improve the estimation performance of sound direction of arrival. The proposed method applies a threshold to the CPSP values and increases the reliability of the estimated sound direction. Through computer simulation for various SNRs, we validate the effectiveness of the proposed method. When the threshold was set to 0.1, more than 90% of success rate of sound direction of arrival estimation has been achieved for directions of 10°, 40°, 70° from the source location even with reverberation times of 0.1s.
목차
ABSTRACT
1. 서론
2. CPSP 함수를 이용한 음원도달방향 추정
3. CPSP 문턱값 설정올 통한 음원도달방향 추정 성능 향상
4. 실험 및 검토
5. 결론
참고문헌
참고문헌 (5)
참고문헌 신청
1. [학술지(정기간행물)] - Veen, B. V / 1988 / Beamforming: A versatile approach to spatial filtering / IEEE ASSP Magazine 5 (2) : 4 ~ 24
2. [학술대회논문] - Claudio, E. D / 2000 / Multi-source localization in reverberant environments by root-music and clustering / ICASSP : 921 ~ 924
3. [학술지(정기간행물)] - Knapp, C / 1976 / The generalized correlation method for estimation of time delay / Acoustics, Speech and Signal Processing 24 (4) : 320 ~ 327
4. [학술지(정기간행물)] - Allen, J / 1979 / Image method for efficiently simulating small-room acoustics / J. Acoust. Soc. Am 65 (4) : 943 ~ 950
5. [학술지(정기간행물)] - 권홍석 / 2009 / 프리엠퍼시스를 이용한 CPSP 기반의 도달시간차이 추정 성능 개선 / 한국음향학회지 28 (5) : 461 ~ 470
2. [학술대회논문] - Claudio, E. D / 2000 / Multi-source localization in reverberant environments by root-music and clustering / ICASSP : 921 ~ 924
3. [학술지(정기간행물)] - Knapp, C / 1976 / The generalized correlation method for estimation of time delay / Acoustics, Speech and Signal Processing 24 (4) : 320 ~ 327
4. [학술지(정기간행물)] - Allen, J / 1979 / Image method for efficiently simulating small-room acoustics / J. Acoust. Soc. Am 65 (4) : 943 ~ 950
5. [학술지(정기간행물)] - 권홍석 / 2009 / 프리엠퍼시스를 이용한 CPSP 기반의 도달시간차이 추정 성능 개선 / 한국음향학회지 28 (5) : 461 ~ 470
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UCI(KEPA) : I410-ECN-0101-2013-701-000760904