VoIP audio codecs

Joint pre-echo control and frame erasure concealment for VoIP audio codecs

FREE-DOWNLOAD [PDF] B Geiser… – Analysis, 2009
ABSTRACT Pre-echo artifacts are a common problem of transform au- dio codecs owing to their
comparatively large block lengths. If such codecs are used in Voice-over-IP (VoIP)
applications, the concealment of lost audio packets poses another major is- sue. These