Title :
Design of a sub-band coder for low-bit rate using fixed and variable band coding schemes
Author :
Zemouri, R. ; Holt, A.G.J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of the West Indies, St. Augustine, Trinidad and Tobago
fDate :
27 Sep-1 Oct 1994
Abstract :
This paper presents a non-integer sampling method for sub-band coding that exploits the advantages of modifying the centre frequency of the sub-bands according to the dynamic movement of the vocal tract. The above method uses fixed or variable bandwidths, and is based on a new linear phase bandpass filter with a variable cut-off frequency
Keywords :
band-pass filters; delay circuits; digital filters; signal sampling; speech coding; variable rate codes; bandwidths; centre frequency; design; dynamic movement; fixed band coding schemes; linear phase bandpass filter; low-bit rate; noninteger sampling method; sub-band coder; variable band coding schemes; variable cut-off frequency; vocal tract; Band pass filters; Bandwidth; Cutoff frequency; Delay; Finite impulse response filter; Hardware; Mirrors; Nonlinear filters; Sampling methods; Speech;
Conference_Titel :
Universal Personal Communications, 1994. Record., 1994 Third Annual International Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-1823-4
DOI :
10.1109/ICUPC.1994.383048
