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Patent Searching and Data


Title:
VOICEPRINT REGISTRATION AND AUTHENTICATION METHODS AND DEVICES
Document Type and Number:
WIPO Patent Application WO/2017/206375
Kind Code:
A1
Abstract:
Disclosed are a voiceprint registration and authentication methods and devices. The registration method comprises: performing frame alignment on a registration character string inputted by a user by means of voice entry, and extracting an acoustic feature from each character; calculating, in a global GMM model, a posterior probability of the acoustic feature of each character so as to perform BW calculation; respectively extracting, by means of preset vector feature extractors for multiple characters, a vector feature from each character; and sequentially joining the vector features of all characters to obtain a registration voiceprint model of the user. In an embodiment of the invention, feature processing is performed on respective characters in a registration character string, thereby increasing accuracy of a voiceprint registration model.

Inventors:
LI, Chao (3/F Baidu Campus, No. 10 Shangdi 10th StreetHaidian District, Beijing 5, 100085, CN)
WU, Bengu (3/F Baidu Campus, No. 10 Shangdi 10th StreetHaidian District, Beijing 5, 100085, CN)
Application Number:
CN2016/096479
Publication Date:
December 07, 2017
Filing Date:
August 24, 2016
Export Citation:
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Assignee:
BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD. (3/F Baidu Campus, No. 10 Shangdi 10th StreetHaidian District, Beijing 5, 100085, CN)
International Classes:
H04L9/32; G10L17/04; G10L15/02
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (Room 301 Trade Building, ZhaolanyuanTsinghua University, Qinghuayua, Haidian District Beijing 4, 100084, CN)
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