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Document Type and Number:
WIPO Patent Application WO/2018/024058
Kind Code:
Provided are a reverberation time estimation method and apparatus, used for solving the problem, in existing reverberation time estimation methods based on speech models, of the reverberation time of reverberation speech for which the reverberation time is smaller than a preset threshold being overestimated. The reverberation time estimation method is: in a reverberation environment, obtaining a current reverberation speech signal (101); determining an autocorrelation function on the basis of historical reverberation speech signals and the current reverberation speech signal (102); according to the autocorrelation function and a preset maximum-likelihood estimation model, determining the reverberation time of the current reverberation speech signal (103).

ZHAO, Yali (NO. 40 Xueyuan Rd, Haidian District, Beijing 1, 100191, CN)
LIANG, Min (NO. 40 Xueyuan Rd, Haidian District, Beijing 1, 100191, CN)
SHA, Yongtao (NO. 40 Xueyuan Rd, Haidian District, Beijing 1, 100191, CN)
Application Number:
Publication Date:
February 08, 2018
Filing Date:
June 29, 2017
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CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY (NO. 40 Xueyuan Rd, Haidian District, Beijing 1, 100191, CN)
International Classes:
G01H7/00; G10K15/08
Foreign References:
Other References:
KESHAVARZ, A. ET AL.: "Speech-Model Based Accurate Blind Reverberation Time Estimation Using an LPC Filter[J", IEEE TRANSACTIONS ON AUDIO SPEECH AND LANGUAGE PROCESSING, vol. 20, no. 6, 30 August 2012 (2012-08-30), pages 1884 - 1893, XP011442834
JAYASHREE, R. ET AL.: "Accurate Estimation of Reverberation Time and Drr Using Maximum Likelihood Estimator", INTERNATIONAL JOURNAL OF EMERGING TECHNOLOGY AND ADVANCED ENGINEERING, vol. 3, no. 1, 30 January 2013 (2013-01-30), pages 14, XP055461333, ISSN: 2250-2459
WU, LIFU ET AL.: "An Improved Algorithm for Blind Estimation of Reverberation Time Based on Maximum Likelihood", JOURNAL OF APPLIED ACOUSTICS, vol. 35, no. 4, 30 July 2016 (2016-07-30), pages 288 - 293, XP055072696, ISSN: 1000-310X
MEI, TIEMIN ET AL.: "New Method of Reverberation Time Estimation", JOURNAL OF SHENYANG LIGONG UNIVERSITY, vol. 31, no. 6, 30 December 2012 (2012-12-30), pages 66 - 69, ISSN: 1003-1251
Attorney, Agent or Firm:
TDIP & PARTNERS (Room 1304-05, A Zhizhen Building No. 7 Zhichun Road, Haidian District, Beijing 1, 100191, CN)
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