Showing papers by "José Tribolet published in 1988"
TL;DR: An 8 kbit/s simulation is presented, using hard switching between harmonic coding and ATC to discuss the state of the art in analysis-synthesis methods and their application to coding.
9 citations
01 Jan 1988
TL;DR: A systematic experimental study, in which this type of quantization is compared with traditional scalar techniques, for quantizing the harmonic parameters, showed that it is possible to quantize voiced speech below 8 kbps, and still obtain high quality synthetic signals.
Abstract: For some years now, vector quantization has been used as a synonym of efficient quantization schemes, despite the large computational overhead involved in this type of approaches. The introduction of vector quantization in the harmonic coder framework may affect several sets of parameters, namely the amplitudes and the phases of the harmonic coefficients. This paper reports a systematic experimental study, in which this type of quantization is compared with traditional scalar techniques, for quantizing the harmonic parameters. The experiments showed that it is possible to quantize voiced speech below 8 kbps, and still obtain high quality synthetic signals.
4 citations
11 Apr 1988
TL;DR: A systematic experimental study is reported in which vector quantization is compared with traditional scalar techniques for quantizing the harmonic parameters and showed that it is possible to quantize voice speech below 8 kb/s and still obtain high-quality synthetic signals.
Abstract: The introduction of vector quantization in the harmonic coder framework can affect several sets of parameters, namely the amplitudes and the phases of the harmonic coefficients A systematic experimental study is reported in which this type of quantization is compared with traditional scalar techniques for quantizing the harmonic parameters The experiments showed that it is possible to quantize voice speech below 8 kb/s and still obtain high-quality synthetic signals >