ESSV Konferenz Elektronische Sprachsignalverarbeitung

Title: A fast indexing method for shells of the gosset lattice

Authors: Hauke Krüger, Bernd Geiser, Peter Vary, Haiting Li, Deming Zhang


An iterative algorithm for indexing codevectors that are taken from spherical shells of the Gosset lattice E8 is described. The proposed approach has a significantly lower computational complexity than the traditional Schalkwijk indexing method. Both methods are described in detail and an analysis of the encoding and decoding complexity is presented. The new indexing method is implemented in the “Gosset Low Complexity Vector Quantizer” (GLCVQ) which is used for super-wideband transform audio coding in Amd. 6 to ITU-T Rec. G.729.1.

Year: 2011
In session: Poster zu verschiedenen Themenbereichen
Pages: 205 to 212