Analysis of Speech Signals in VoIP Transferred Over a Network Channel
The article examines the impact of VoIP transmission channel characteristics on speech parameters. It seeks ways of emulating properties of a selected VoIP transmission channel and creating a network emulation environment. Several scripts have been created in the Matlab development environment and used to modify and divide a continuous recording into parts identical to the original speeches, before passing through the transmission channel. Subsequently a database of speech recordings is created, as affected by selected characteristics - jitter, bandwidth, loss. Within these databases, symptoms are sought as the most evident characteristics of the transmission channel. Using correlation, symptoms are selected that are best suited for automated determination of the properties of transmission channel characteristics such as jitter, loss and bandwidth.
KeywordsSpeech parameter, VoIP, transmission channel, WAN network emulation, jitter, bandwidth, loss
Document typePeer reviewed
Document versionxmlui.vut.verze.Publishers's version
SourceProceedings of the 22nd Conference STUDENT EEICT 2016. s. 359-364. ISBN 978-80-214-5350-0
- Student EEICT 2016