1 research outputs found
Integrated Replay Spoofing-aware Text-independent Speaker Verification
A number of studies have successfully developed speaker verification or
presentation attack detection systems. However, studies integrating the two
tasks remain in the preliminary stages. In this paper, we propose two
approaches for building an integrated system of speaker verification and
presentation attack detection: an end-to-end monolithic approach and a back-end
modular approach. The first approach simultaneously trains speaker
identification, presentation attack detection, and the integrated system using
multi-task learning using a common feature. However, through experiments, we
hypothesize that the information required for performing speaker verification
and presentation attack detection might differ because speaker verification
systems try to remove device-specific information from speaker embeddings,
while presentation attack detection systems exploit such information.
Therefore, we propose a back-end modular approach using a separate deep neural
network (DNN) for speaker verification and presentation attack detection. This
approach has thee input components: two speaker embeddings (for enrollment and
test each) and prediction of presentation attacks. Experiments are conducted
using the ASVspoof 2017-v2 dataset, which includes official trials on the
integration of speaker verification and presentation attack detection. The
proposed back-end approach demonstrates a relative improvement of 21.77% in
terms of the equal error rate for integrated trials compared to a conventional
speaker verification system.Comment: 9 pages, 2 figures, 6 tables, Published in MDPI Applied Sciences
(SCIE