公开(公告)号：WO2022236451A1

公开(公告)日：2022-11-17

申请号：PCT/CN2021/092281

申请日：2021-05-08

Applicant: MICROSOFT TECHNOLOGY LICENSING, LLC ,  CUI, Yang ,  WANG, Ke ,  HE, Lei ,  SOONG, Frank Kao-Ping K

Inventor： CUI, Yang ,  WANG, Ke ,  HE, Lei ,  SOONG, Frank Kao-Ping K

IPC: G10L19/018 ,  G10L25/30

Abstract: Solutions for authenticating digital audio include: generating a first band-limited watermark using a first key, generating a second band-limited watermark using a second key, wherein the bandwidth of the second watermark does not overlap with the bandwidth of the first watermark; and embedding the first watermark and the second watermark into a segment of the digital audio file. Solutions also include determining a first watermark score of a segment of the digital audio file for the first watermark using the first key; determining a second watermark score of the segment of the digital audio file for the second watermark using the second key; based on at least the first watermark score and the second watermark score, determining a probability that the digital audio file is watermarked: and generating a report indicating whether the digital audio file is watermarked. In some examples, solutions may also embed and decode messages.

公开(公告)号：WO2022015404A1

公开(公告)日：2022-01-20

申请号：PCT/US2021/032133

申请日：2021-05-13

Applicant: MICROSOFT TECHNOLOGY LICENSING, LLC

Inventor： MAO, Shaoguang ,  SOONG, Frank Kao-Ping K ,  XIA, Yan ,  TIEN, Jonathan Y.

IPC: G10L25/30 ,  G10L25/60

Abstract: According to implementations of the present disclosure, there is provided a solution for sample assessment. In this solution, a set of comparison results is generated based on an input sample and a reference sample set. Each comparison result in the set of comparison results indicates a probability that a target attribute of the input sample is superior to the target attribute of a respective reference sample in the reference sample set. Then, at least one reference sample is determined from the reference sample set based on the set of comparison results. The at least one reference sample matches the input sample in terms of the target attribute. A score of the input sample with respect to the target attribute is determined based on a respective score of the at least one reference sample with respect to the target attribute.