Title:
METHOD OF DETERMINING NOISE SIGNAL, AND METHOD AND DEVICE FOR AUDIO NOISE REMOVAL
Document Type and Number:
WIPO Patent Application WO/2017/063516
Kind Code:
A1
Abstract:
A method of determining a noise signal, and method and device for audio noise removal. The method of determining a noise signal comprises: performing the Fourier transform on respective frame signals in an audio signal segment to be analyzed, so as to obtain a power spectrum of each frame signal in the audio signal segment (S101); determining, according to the power spectra of the frame signals, power value variances of respective frame signals in the audio signal segment with respect to frequency values (S102); and determining, according to the variances, whether respective frame signals in the audio signal segment are a noise signal or not (S103). The present invention enables accurate acquisition of noise frames contained in an audio signal segment to be analyzed, thus improving the effect of audio noise removal.
Inventors:
DU ZHIJUN (CN)
Application Number:
PCT/CN2016/101444
Publication Date:
April 20, 2017
Filing Date:
October 08, 2016
Export Citation:
Assignee:
ALIBABA GROUP HOLDING LTD (CN)
International Classes:
G10L21/0232
Foreign References:
| CN101968957A | 2011-02-09 | |||
| CN103903629A | 2014-07-02 | |||
| CN103632677A | 2014-03-12 | |||
| CN102314883A | 2012-01-11 | |||
| CN103489446A | 2014-01-01 | |||
| CN102800322A | 2012-11-28 | |||
| CN101853661A | 2010-10-06 | |||
| EP2031583A1 | 2009-03-04 | |||
| JP2009216733A | 2009-09-24 | |||
| JPH03180900A | 1991-08-06 |
Other References:
See also references of EP 3364413A4
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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