Backdoor Defence for Voice Print Recognition Model Based on Speech Enhancement and Weight Pruning

Voice print recognition is one of the most mature biometric authentication technologies, and the application of deep neural networks (DNNs) has led to a significant improvement in the accuracy of voice print recognition. However, DNN models can be attacked by backdoor attackers, which poses a seriou...

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Main Authors: Jiawei Zhu, Lin Chen, Dongwei Xu, Wenhong Zhao
Format: Article
Language:English
Published: IEEE 2022-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/9930770/
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author Jiawei Zhu
Lin Chen
Dongwei Xu
Wenhong Zhao
author_facet Jiawei Zhu
Lin Chen
Dongwei Xu
Wenhong Zhao
author_sort Jiawei Zhu
collection DOAJ
description Voice print recognition is one of the most mature biometric authentication technologies, and the application of deep neural networks (DNNs) has led to a significant improvement in the accuracy of voice print recognition. However, DNN models can be attacked by backdoor attackers, which poses a serious threat to the security of model for voice print recognition. In this paper, a method is proposed for backdoor defence of voice print recognition model based on speech enhancement and weight pruning. Firstly, input samples are perturbed by superimposing various speech patterns, and the backdoor samples are determined based on the randomness (entropy value) of the prediction classes with perturbed inputs from a given deployment model (malicious or benign). Secondly, the backdoor samples are fed into a network (Deep Complex Convolution Recurrent Network) dedicated for speech enhancement, with which the backdoor samples can be denoised by removing the backdoor noise. Finally, the model is pruned using an automatic progressive weight pruning algorithm, which can avoid the accuracy degradation caused by neurons pruning. Experimental results on the AISHELL speech dataset show that the method not only reduces the success rate of backdoor attacks, but also greatly realizes the purification of the backdoor samples.
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spelling doaj.art-6c9e16c246db497e98dbcca3b6ae2e152022-12-22T04:35:18ZengIEEEIEEE Access2169-35362022-01-011011401611402310.1109/ACCESS.2022.32173229930770Backdoor Defence for Voice Print Recognition Model Based on Speech Enhancement and Weight PruningJiawei Zhu0Lin Chen1https://orcid.org/0000-0001-9805-3466Dongwei Xu2https://orcid.org/0000-0003-2693-922XWenhong Zhao3Science and Technology on Communication Information Security Control Laboratory, Jiaxing, ChinaInstitute of Cyberspace Security, Zhejiang University of Technology, Hangzhou, ChinaInstitute of Cyberspace Security, Zhejiang University of Technology, Hangzhou, ChinaSchool of Information Engineering, Jiaxing Nanhu University, Jiaxing, ChinaVoice print recognition is one of the most mature biometric authentication technologies, and the application of deep neural networks (DNNs) has led to a significant improvement in the accuracy of voice print recognition. However, DNN models can be attacked by backdoor attackers, which poses a serious threat to the security of model for voice print recognition. In this paper, a method is proposed for backdoor defence of voice print recognition model based on speech enhancement and weight pruning. Firstly, input samples are perturbed by superimposing various speech patterns, and the backdoor samples are determined based on the randomness (entropy value) of the prediction classes with perturbed inputs from a given deployment model (malicious or benign). Secondly, the backdoor samples are fed into a network (Deep Complex Convolution Recurrent Network) dedicated for speech enhancement, with which the backdoor samples can be denoised by removing the backdoor noise. Finally, the model is pruned using an automatic progressive weight pruning algorithm, which can avoid the accuracy degradation caused by neurons pruning. Experimental results on the AISHELL speech dataset show that the method not only reduces the success rate of backdoor attacks, but also greatly realizes the purification of the backdoor samples.https://ieeexplore.ieee.org/document/9930770/Backdoor defencespeech enhancementweight pruning
spellingShingle Jiawei Zhu
Lin Chen
Dongwei Xu
Wenhong Zhao
Backdoor Defence for Voice Print Recognition Model Based on Speech Enhancement and Weight Pruning
IEEE Access
Backdoor defence
speech enhancement
weight pruning
title Backdoor Defence for Voice Print Recognition Model Based on Speech Enhancement and Weight Pruning
title_full Backdoor Defence for Voice Print Recognition Model Based on Speech Enhancement and Weight Pruning
title_fullStr Backdoor Defence for Voice Print Recognition Model Based on Speech Enhancement and Weight Pruning
title_full_unstemmed Backdoor Defence for Voice Print Recognition Model Based on Speech Enhancement and Weight Pruning
title_short Backdoor Defence for Voice Print Recognition Model Based on Speech Enhancement and Weight Pruning
title_sort backdoor defence for voice print recognition model based on speech enhancement and weight pruning
topic Backdoor defence
speech enhancement
weight pruning
url https://ieeexplore.ieee.org/document/9930770/
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AT wenhongzhao backdoordefenceforvoiceprintrecognitionmodelbasedonspeechenhancementandweightpruning