Title :
An adaptive bit allocation scheme for coding of speech signals using partial sets of orthogonal functions
Author :
Spanias, Andreas S. ; Mikhael, Wasfy B.
Author_Institution :
Dept. of Electr. & Comput. Eng., Arizona State Univ., Tempe, AZ, USA
Abstract :
A least squares pole-zero algorithm in the transform domain which fits each of the retained subsets of the complex transform components accurately is presented. The pole-zero function, while characterized by real coefficients about twice the number of the retained complex transform components, carries enough location, magnitude, and phase information for accurate signal reconstruction. The algorithm is applied for the coding of the mixed DFT-WHT parameters. Results are given for 8 kb/s and 6.4 kb/s
Keywords :
decoding; encoding; poles and zeros; speech analysis and processing; 6.4 kbit/s; 8 kbit/s; adaptive bit allocation scheme; coding; complex transform components; least squares pole-zero algorithm; mixed DFT-WHT parameters; orthogonal functions; partial sets; signal reconstruction; speech signals; Bit rate; Discrete Fourier transforms; Discrete transforms; Encoding; Fourier transforms; Iterative algorithms; Least squares methods; Signal reconstruction; Signal representations; Speech coding;
Conference_Titel :
Circuits and Systems, 1989., Proceedings of the 32nd Midwest Symposium on
Conference_Location :
Champaign, IL
DOI :
10.1109/MWSCAS.1989.101925
