Title :
A comparison of backward adaptive prediction algorithms in low delay speech coders
Author :
Gibson, Jerry D. ; Cheong, Yoon Chae ; Woo, Hong Chae ; Chang, Wen-Whei
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
Abstract :
Simulation results are presented comparing the performances of four backward adaptive lattice algorithms for updating the short-term predictors in adaptive predictive coding (APC) and differential pulse code modulation (DPCM) code generators for low-delay tree coding of speech at 16 and 9.6 kb/s. The algorithms studied are the least-squares lattice, the exponential window lattice, the signal-driven lattice, and the residual-driven lattice. Ideal channels are emphasized, and comparisons are based primarily upon frequency-weighted signal-to-noise ratio and subjective listening tests
Keywords :
decoding; encoding; filtering and prediction theory; pulse-code modulation; speech analysis and processing; APC; DPCM; adaptive predictive coding; backward adaptive prediction algorithms; code generators; differential pulse code modulation; exponential window lattice; frequency-weighted SNR tests; ideal channel performance; least-squares lattice; low delay speech coders; low-delay tree coding; predictors updating; residual-driven lattice; short-term predictors; signal-driven lattice; subjective listening tests; Frequency; Lattices; Modulation coding; Prediction algorithms; Predictive coding; Predictive models; Pulse generation; Pulse modulation; Signal to noise ratio; Speech coding;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
DOI :
10.1109/ICASSP.1990.115582
