Adaptive predictive processing system

Details Adaptive predictive processing system Adaptive predictive processing system

1982-09-02

1985-08-27

Kemeny, E. S. Matt

Boots, shoes, and leggings

381 31, G10L 100

Patent

active

045382344

ABSTRACT:
An adaptive predictive coding (APC) and adaptive kit allocation (ABA) system which splits a speech signal into a plurality of bands, subjecting each signal to adaptive predictive coding and adaptively changes quantization characteristics in the adaptive predictive coding so that quantization noise may become small. An average amplitude (not average power) of the signal of each band is detected for each temporal sub-interval, and a quantization bit number and a quantization step size are adaptively determined from the average amplitude for each sub-interval, thereby permitting reduction of the quantity of hardware used.

REFERENCES:
patent: 4184049 (1980-01-01), Crochiere et al.
patent: 4216354 (1980-08-01), Esteban et al.
patent: 4401855 (1983-08-01), Broderson et al.

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