Title :
Bounds on performance and dynamic bit allocation for sub-band coders
Author :
Gibson, Jerry D.
Author_Institution :
Texas A&M Univ., College Station, TX, USA
Abstract :
Optimal sub-band coder design is considered based on Shannon´s bounds for the rate of a continuous source with a given spectral density. Minimization of these bounds with respect to band partitioning and rate per band is considered. For fixed sub-band bandwidths, the optimum rate allocation for each band is derived. The resulting expressions can be solved in real-time to yield a dynamic rate allocution scheme.
Keywords :
Bandwidth; Bit rate; Entropy; Equations; Frequency; Mean square error methods; Radio spectrum management; Speech coding; Upper bound; Vocoders;
Conference_Titel :
Acoustics, Speech, and Signal Processing, IEEE International Conference on ICASSP '81.
DOI :
10.1109/ICASSP.1981.1171216
