Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
SPEECH NOISE REDUCTION PROCESSING METHOD AND APPARATUS, AND COMPUTER DEVICE AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2021/078010
Kind Code:
A1
Abstract:
A speech noise reduction processing method and apparatus, and a computer device and a storage medium. The speech noise reduction processing method comprises: when a distance between a speech collection device and a target object is detected to reach a preset value, acquiring a noisy speech signal collected by the speech collection device, and performing frequency division processing on the noisy speech signal to obtain a low-band signal; acquiring an amplitude spectrum and a phase spectrum of the low-band signal; acquiring a modulation domain signal corresponding to the amplitude spectrum; using spectral subtraction to process a modulation domain amplitude spectrum or power spectrum to obtain a noise-reduced modulation domain amplitude spectrum or power spectrum; compensating the modulation domain phase spectrum to obtain a compensated modulation domain phase spectrum; obtaining a noise-reduced low-band signal based on the compensated modulation domain phase spectrum, the noise-reduced modulation domain amplitude spectrum and the phase spectrum of the low-band signal; and using the noise-reduced low-band signal to synthesize a noise-reduced speech signal. A smooth subtraction factor used by the spectral subtraction avoids the problem of excessive elimination of a speech message due to an extremely large smooth subtraction factor.

More Like This:
WO/2017/005979DISTRIBUTED AUDIO CAPTURE AND MIXING CONTROL
WO/2012/109384COMBINED SUPPRESSION OF NOISE AND OUT - OF - LOCATION SIGNALS
JP2009216733FILTER ESTIMATION DEVICE, SIGNAL ENHANCEMENT DEVICE, FILTER ESTIMATION METHOD, SIGNAL ENHANCEMENT METHOD, PROGRAM AND RECORDING MEDIUM
Inventors:
XIAO QIANG (CN)
XIAO QUANZHI (CN)
HUANG RONGJUN (CN)
FANG GUIPING (CN)
YAN YUFENG (CN)
Application Number:
PCT/CN2020/119600
Publication Date:
April 29, 2021
Filing Date:
September 30, 2020
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ZHUHAI JIELI TECHNOLOGY CO LTD (CN)
International Classes:
G10L21/0216; G10L21/0208; G10L21/0232
Foreign References:
CN110797041A2020-02-14
CN103021420A2013-04-03
CN110267163A2019-09-20
CN108735213A2018-11-02
CN108831500A2018-11-16
US20140185827A12014-07-03
JP2006047639A2006-02-16
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: HEAT SINK ANTENNA ARRAY STRUCTURE

Next Patent: WLAN COMMUNICATION METHOD, CONTROLLER AND AP