Title:
METHOD, DEVICE AND SYSTEM FOR RECOGNIZING SAMPLING RATE OF PURE VOICE DATA
Document Type and Number:
WIPO Patent Application WO/2021/179470
Kind Code:
A1
Abstract:
Disclosed in the embodiments of the present application are a method, device, and system for recognizing the sampling rate of pure voice data. The method comprises: performing Fourier transform on pure voice data to obtain frequency domain data; according to received prior threshold data, processing the frequency domain data to obtain frequency band information; acquiring a high-frequency cut-off frequency point of the frequency band information, and calculating, according to preset different sampling rates, hypothetical frequencies corresponding to the high-frequency cut-off frequency point; and comparing the different hypothetical frequencies to a prior frequency, and determining the sampling rate corresponding to the hypothetical frequency when the comparison result is most similar as the actual sampling rate. In the present application, according to the prior characteristic of the bandwidth range in the frequency domain of a voice emitted by an individual being 200 Hz to 4000 Hz, different hypothetical frequencies of pure voice data are compared, and the actual sampling rate can be determined according to the similarity value of the comparison result, thus the magnitude of the sampling rate of pure voice data can be automatically predicted so as to prevent problems such the effect of voice processing being greatly impacted when the sampling rate is unknown.
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Inventors:
LIU BINGBING (CN)
BAO FEI (CN)
WU KEWEI (CN)
LIU RUYI (CN)
CHE YANG (CN)
BAO FEI (CN)
WU KEWEI (CN)
LIU RUYI (CN)
CHE YANG (CN)
Application Number:
PCT/CN2020/097008
Publication Date:
September 16, 2021
Filing Date:
June 19, 2020
Export Citation:
Assignee:
SUNING COM GROUP CO LTD (CN)
SUNING CLOUD COMPUTING CO LTD (CN)
SUNING CLOUD COMPUTING CO LTD (CN)
International Classes:
G10L19/02; G10L25/18; G10L25/27
Foreign References:
| CN101320560A | 2008-12-10 | |||
| CN105513590A | 2016-04-20 | |||
| CN103745726A | 2014-04-23 | |||
| CN109328383A | 2019-02-12 |
Attorney, Agent or Firm:
BEIJING WANHUIDA LAW FIRM (CN)
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