EAN: 9783031447471

SPRINGERBRIEFS IN COMPUTER SCIENCE SECURE VOI...

This book provides readers with the basic understanding regarding the threats to the voice
processing systems  the state-of-the-art defense methods as well as the current research
results on securing voice processing systems.It also introduces three mechanisms to secure the
voice processing systems against malicious voice attacks under different scenarios  by
utilizing time-domain signal waves  frequency-domain spectrum features  and acoustic physical
attributes. First  the authors uncover the modulated replay attack  which uses an inverse
filter to compensate for the spectrum distortion caused by the replay attacks to bypass the
existing spectrum-based defenses. The authors also provide an effective defense method that
utilizes both the time-domain artifacts and frequency-domain distortion to detect the modulated
replay attacks. Second  the book introduces a secure automatic speech recognition system for
driverless car to defeat adversarial voice command attacks launched from car loudspeakers 
smartphones  and passengers. Third  it provides an acoustic compensation system design to
reduce the effects from the spectrum reduction attacks  by the audio spectrum compensation and
acoustic propagation principle. Finally  the authors conclude with their research effort on
defeating the malicious voice attacks and provide insights into more secure voice processing
systems. This book is intended for security researchers  computer scientists  and electrical
engineers who are interested in the research areas of biometrics  speech signal processing  IoT
security  and audio security. Advanced-level students who are studying these topics will
benefit from this book as well.

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