European Conference on Speech Technology

Edinburgh, Scotland, UK
September 1987

AVPC-Subband Coding System for Speech Encoding

E. Masgrau-Gomez, José B. Marino, J. A. Rodriguez-Fonollosa, J. Salavedra-Moli

Dpto. Teoria de la Senal y Comunicaciones, E.T.S.I. Telecomunicacion (U.P.C), Barcelona, Spain

The combination of Vector Quantization (VQ) and predictive techniques -named AVPC systems- has been shown as interesting systems for speech waveform coding at medium-high rates (ref. 1 to 3). In this work we present a such system including a previous four subbbands splitting. This allows good quality of speech at low-medium rates (1-1.25 bits/sample). A comparative study show that the AVPC-SBC outperforms the simple AVPC coder.

Full Paper

Bibliographic reference.  Masgrau-Gomez, E. / Marino, José B. / Rodriguez-Fonollosa, J. A. / Salavedra-Moli, J. (1987): "AVPC-subband coding system for speech encoding", In ECST-1987, 2189-2192.