Title:
VOICE DEREVERBERATION METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/143670
Kind Code:
A1
Abstract:
Provided is a voice dereverberation method, comprising: acquiring the voice spectrum signal of the reverberant voice (41); normalizing the voice spectrum signal of the reverberant voice to obtain the normalized voice spectrum diagram of the reverberant voice (42); performing two-dimensional filtering in the time-frequency domain on the normalized voice spectrum diagram of the reverberant voice to acquire the frequency response of the reverb-like system (43); post-processing the frequency response of the reverb-like system to acquire the frequency response estimation of the reverberation system (44); according to the voice spectrum signal of the reverberant voice and the frequency response estimation of the reverberation system, acquiring the voice spectrum of the dereverberation voice signal (45); according to the voice spectrum of the dereverberation voice signal, acquiring the time domain dereverberation voice signal (46).
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Inventors:
LIANG MIN (CN)
XU HONGYAN (CN)
BI HAI (CN)
XU HONGYAN (CN)
BI HAI (CN)
Application Number:
PCT/CN2020/070922
Publication Date:
July 16, 2020
Filing Date:
January 08, 2020
Export Citation:
Assignee:
CHINA ACADEMY TELECOMMUNICATIONS TECHNOLOGY (CN)
International Classes:
G10L21/0208
Foreign References:
| CN109637553A | 2019-04-16 | |||
| CN106485674A | 2017-03-08 |
Other References:
MINGMING ZHANG ; WEIFENG LI ; LONGBIAO WANG ; JIANGUO WEI ; ZHIYONG WU ; QINGMIN LIAO: "Frequency-domain Dereverberation on Speech Signal using Surround Retinex", 2013 ASIA-PACIFIC SIGNAL AND INFORMATION PROCESSING ASSOCIATION ANNUAL SUMMIT AND CONFERENCE, 1 November 2013 (2013-11-01), pages 1 - 5, XP032549705, DOI: 10.1109/APSIPA.2013.6694195
XIAO, CHUNZHI ET AL: "A Speech Enhancement Algorithm Based on Speech Spectrogram", AUDIO ENGINEERING, vol. 36, no. 9, 30 September 2012 (2012-09-30), XP009521903, ISSN: 1002-8684
XIAO, CHUNZHI ET AL: "A Speech Enhancement Algorithm Based on Speech Spectrogram", AUDIO ENGINEERING, vol. 36, no. 9, 30 September 2012 (2012-09-30), XP009521903, ISSN: 1002-8684
Attorney, Agent or Firm:
DRAGON INTELLECTUAL PROPERTY LAW FIRM (CN)
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