  This study investigated the cepstrogram properties and demonstrated their
effectiveness as powerful countermeasures against replay attacks. A cepstrum
analysis of replay attacks suggests that crucial information for anti-spoofing
against replay attacks may be retained in the cepstrogram. When building
countermeasures against replay attacks, experiments on the ASVspoof 2019
physical access database demonstrate that the cepstrogram is more effective
than other features in both single and fusion systems. Our LCNN-based single
and fusion systems with the cepstrogram feature outperformed the corresponding
LCNN-based systems without the cepstrogram feature and several state-of-the-art
single and fusion systems in the literature.
