지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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This paper proposes a speech enhancement algorithm to improve the speech intelligibility by suppressing both reverberation and background noise. The algorithm adopts a non-causal single-channel minimum variance distortionless response (MVDR) filter to exploit an additional information that is included in the noisy-reverberant signals in subsequent frames. The noisy-reverberant signals are decomposed into the parts of the desired signal and the interference that is not correlated to the desired signal. Then, the filter equation is derived based on the MVDR criterion to minimize the residual interference without bringing speech distortion. The estimation of the correlation parameter, which plays an important role to determine the overall performance of the system, is mathematically derived based on the general statistical reverberation model. Furthermore, the practical implementation methods to estimate sub-parameters required to estimate the correlation parameter are developed. The efficiency of the proposed enhancement algorithm is verified by performance evaluation. From the results, the proposed algorithm achieves significant performance improvement in all studied conditions and shows the superiority especially for the severely noisy and strongly reverberant environment.
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참고문헌 (40)
참고문헌 신청
E.A.P. Habets / 2007 / Single- and multi-microphone speech dereverberation using spectral enhancement
A.K. N´abˇelek / 1989 / Reverberant overlap-and self-masking in consonant identification / J. Acoust. Soc. Am. 86:1259~1265
L.L. Beranek / 1996 / Concert and opera halls: how they sound / Acoustical Society of America through the American Institute of Physics
L.E. Kinsler / 1999 / Fundamentals of Acoustics, 4th Edition / Wiley-VCH :560
H. Kuttruff / 2000 / Room acoustics / Taylor & Francis
A.K. N´abˇelek / 1989 / Reverberant overlap-and self-masking in consonant identification / J. Acoust. Soc. Am. 86:1259~1265
L.L. Beranek / 1996 / Concert and opera halls: how they sound / Acoustical Society of America through the American Institute of Physics
L.E. Kinsler / 1999 / Fundamentals of Acoustics, 4th Edition / Wiley-VCH :560
H. Kuttruff / 2000 / Room acoustics / Taylor & Francis
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