Classifying VoIP μ-law Packets in Real-Time

Konferenz: Sprachkommunikation 2006 - ITG-Fachtagung
26.04.2006 - 28.04.2006 in Kiel, Germany

Tagungsband: Sprachkommunikation 2006

Seiten: 4Sprache: EnglischTyp: PDF

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Hoene, Christian (RI, Universität Tübingen, 72076 Tübingen, Germany)
Wimmer, Till (TKN, Technische Universität Berlin, 10587 Berlin, Germany)

We present an algorithm, which classifies μ-law coded VoIP packets in real time. It is based on our algorithm calculating frame importance off-line, but uses shorter speech segments, an analysis-by-synthesis approach, and a newly developed perceptual evaluation algorithm called PESQlight. Altogether, we are able to reduce the complexity and algorithm delay significantly. The real-time classification has a correlation of up to R=0.63 compared to the reference, off-line algorithm.