A robust 1200 bps voice coder based on vector quantization of line spectral frequencies
Shan Lu, M. Baraniecki · 2002
This paper describes a 1200 bps voice codec that is based on a 10th-order linear prediction analysis, split vector quantization of line spectral frequencies, and differential pitch quantization. Robust codebooks and error protection and concealment techniques are used to minimize the effect of channel errors. Listening tests show that the codec has a high degree of speech intelligibility and speaker recognizability with natural voice quality.