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Different quantisation noise shaping methods for predictive audio coding

: Wabnik, S.; Schuller, G.; Hirschfeld, J.; Kraemer, U.

Institute of Electrical and Electronics Engineers -IEEE-:
IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2006. Proceedings. Vol.5 : Toulouse, France, 14 - 19 May 2006
Piscataway/NJ: IEEE, 2006
ISBN: 1-4244-0469-X
ISBN: 1-4244-0468-1
International Conference on Acoustics, Speech, and Signal Processing (ICASSP) <2006, Toulouse>
Conference Paper
Fraunhofer IDMT ()

The paper presents a comparison of a previous and a new approach to shape quantization noise in low bit rate predictive audio coding. The previous approach uses an adaptation of the step size of a uniform quantizer, the new approach uses a quantizer with clipping. Both approaches are evaluated using a predictive audio coding scheme. The presented results of a listening test show the improved performance of the new approach.