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A master's thesis from Aalborg University
Book cover


Among us - Detecting spoofed audio samples in a multi-party conversation -

Author

Term

4. semester

Publication year

2025

Submitted on

Pages

78

Abstract

As voice technologies become more prevalent, it becomes vital to improve spoofing detection algorithms especially when multiple speakers are involved. This thesis presents a novel pipeline combining speech separation with spoof detection to address the challenge of identifying spoofed audio samples in overlapped speech. The system uses a SOTA spoof detection model which achieves an EER of 2% on ASVspoof 2019 dataset. However, the EER drops to 24% when tested on a custom- generated mixed audio dataset, as a result of modifications of the audio artifacts by the speech separation process. The system when trained on the custom dataset saw an increase in EER to 22% highlighting the importance of domain adaptation for spoof detection in complex acoustic environments and provides a foundation for future research in real-world scenarios.