Presentation 2022-01-27
Speech Watermarking Approach for Securing Speaker Anonymization using McAdams Coefficients
Candy Olivia Mawalim, Masashi Unoki,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Speaker anonymization aims to suppress speaker individuality to protect privacy in speech while preserving the other aspects, such as speech content. One effective solution for anonymization is to modify the McAdams coefficient. In this work, we propose a method to improve the security for speaker anonymization based on the McAdams coefficient by using a speech watermarking approach. The proposed method consists of two main processes: one for embedding and one for detection. In embedding process, two different McAdams coefficients represent binary bits “0”and “1”. The watermarked speech is then obtained by frame-by-frame bit inverse switching. Subsequently, the detection process is carried out by a power spectrum comparison. We conducted objective evaluations with reference to the VoicePrivacy 2020 Challenge (VP2020) and of the speech watermarking with reference to the Information Hiding Challenge (IHC) and found that our method could satisfy the blind detection, inaudibility, and robustness requirements in watermarking. It also significantly improved the anonymization performance in comparison to the secondary baseline system in VP2020.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) speaker anonymizationMcAdams coefficientlinear predictionspeech watermarkingvoice privacy
Paper # EMM2021-88
Date of Issue 2022-01-20 (EMM)

Conference Information
Committee EMM
Conference Date 2022/1/27(1days)
Place (in Japanese) (See Japanese page)
Place (in English) Online
Topics (in Japanese) (See Japanese page)
Topics (in English) Sense of Presence, Universal Media, Digital Entertainment, etc.
Chair Ryoichi Nishimura(NICT)
Vice Chair Masaaki Fujiyoshi(Tokyo Metropolitan Univ.) / Masatsugu Ichino(Univ. of Electro-Comm.)
Secretary Masaaki Fujiyoshi(Utsunomiya Univ.) / Masatsugu Ichino(NICT)
Assistant Shoko Imaizumi(Chiba Univ.) / Youichi Takashima(Kaishi Professional Univ.)

Paper Information
Registration To Technical Committee on Enriched MultiMedia
Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Speech Watermarking Approach for Securing Speaker Anonymization using McAdams Coefficients
Sub Title (in English)
Keyword(1) speaker anonymizationMcAdams coefficientlinear predictionspeech watermarkingvoice privacy
1st Author's Name Candy Olivia Mawalim
1st Author's Affiliation Japan Advanced Institute of Science and Technology(JAIST)
2nd Author's Name Masashi Unoki
2nd Author's Affiliation Japan Advanced Institute of Science and Technology(JAIST)
Date 2022-01-27
Paper # EMM2021-88
Volume (vol) vol.121
Number (no) EMM-362
Page pp.pp.25-30(EMM),
#Pages 6
Date of Issue 2022-01-20 (EMM)