Audio CAPTCHA for SIP-Based VoIP.

Yannis Soupionis George Tountas Dimitris Gritzalis

Published in: SEC (2009)

Keyphrases

session initiation protocol
multimedia
visual information
audio visual
signal processing
audio stream
ip multimedia subsystem
quality of service
visual data
network architecture
audio video
emotion recognition
voice over ip
audio signals
cross modal
ip networks
music score
packet loss
response time