Title :
Stochastic tree coding: voice coding for wireless channels
Author :
Veeneman, Dale ; Mazor, Baruch
Author_Institution :
GTE Labs. Inc., Waltham, MA, USA
Abstract :
Describes a speech coding algorithm termed stochastic tree coding (STC) that is capable of delivering high-quality speech at bit rates of 4.8 to 8 kb/s. Through the use of a tree-structured excitation codebook and an efficient 3-tap pitch search, the algorithm has a moderate computational complexity that enables implementation on a fixed-point DSP56001. The authors also describe an error protection scheme designed for wireless fading channels
Keywords :
computational complexity; error correction codes; radio transmitters; speech coding; telecommunication channels; tree data structures; vocoders; 3-tap pitch search; 4.8 to 8 kbit/s; STC; computational complexity; error protection scheme; fixed-point Motorola DSP56001; high-quality speech; speech coding algorithm; stochastic tree coding; tree-structured excitation codebook; voice coding; wireless channel; wireless fading channels; Code standards; Computational complexity; Crosstalk; Fading; Filters; Protection; Speech analysis; Speech coding; Speech synthesis; Stochastic processes;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1992. Proceedings, PIMRC '92., Third IEEE International Symposium on
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-0841-7
DOI :
10.1109/PIMRC.1992.279848
