Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Introduction to Voice Presentation Attack Detection and Recent Advances   Over the past few years significant progress has been made in the field of
presentation attack detection (PAD) for automatic speaker recognition (ASV).
This includes the development of new speech corpora, standard evaluation
protocols and advancements in front-end feature extraction and back-end
classifiers. The use of standard databases and evaluation protocols has enabled
for the first time the meaningful benchmarking of different PAD solutions. This
chapter summarises the progress, with a focus on studies completed in the last
three years. The article presents a summary of findings and lessons learned
from two ASVspoof challenges, the first community-led benchmarking efforts.
These show that ASV PAD remains an unsolved problem and that further attention
is required to develop generalised PAD solutions which have potential to detect
diverse and previously unseen spoofing attacks.

2
The categories of this paper are: math
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
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The categories of this paper are: quant-ph
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The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
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The categories of this paper are: atom-ph
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The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg