Modified Cepstral Feature for Speech Anti-spoofing

• Published in: 东华大学学报（英文版） Vol. 40; no. 2; pp. 193 - 201
• Main Authors: HE Mingrui, ZAIDI Syed Faham Ali, TIAN Mianxin, SHAN Zhiyong, JIANG Zhengru, XU Longting
• Format: Journal Article
• Language: English
• Published: College of Information Science and Technology,Donghua University,Shanghai 200051,China%SPIC Jiangsu Offshore Wind Power Co.,Ltd.,Yancheng 224001,China 01.04.2023
• Subjects: linear frequency cepstral coefficient(LFCC); hand-crafted feature; log magnitude spectrum; spoofed speech detection
• ISSN: 1672-5220
• DOI: 10.19884/j.1672-5220.202205007

TN912.3; The hidden danger of the automatic speaker verification(ASV)system is various spoofed speeches.These threats can be classified into two categories,namely logical access(LA)and physical access(PA).To improve identification capability of spoofed speech detection,this paper considers the research on features.Firstly,following the idea of modifying the constant-Q-based features,this work considered adding variance or mean to the constant-Q-based cepstral domain to obtain good performance.Secondly,linear frequency cepstral coefficients(LFCCs)performed comparably with constant-Q-based features.Finally,we proposed linear frequency variance-based cepstral coefficients(LVCCs)and linear frequency mean-based cepstral coefficients(LMCCs)for identification of speech spoofing.LVCCs and LMCCs could be attained by adding the frame variance or the mean to the log magnitude spectrum based on LFCC features.The proposed novel features were evaluated on ASVspoof 2019 datase.The experimental results show that compared with known hand-crafted features,LVCCs and LMCCs are more effective in resisting spoofed speech attack.