Digital quantizer

Details Digital quantizer Digital quantizer

1983-11-16

1985-08-20

Dobeck, B.

Communications: electrical

Audible indication

Percussion-type sound producer

375 27, H03K 1301

Patent

active

045367418

ABSTRACT:
An input signal sample is converted, i.e., quantized, from a first digital code to a second digital code by combining an array of stored differential quantizer decision levels with the input signal sample to obtain an array of partial sum signal values. The signs of the partial sum signal values are algebraically summed and the result is used to obtain the quantizer interval that the input signal sample falls in.

REFERENCES:
patent: 3973199 (1976-08-01), Widmer
patent: 4206447 (1980-06-01), Ching et al.
patent: 4309694 (1982-01-01), Henry
patent: 4437087 (1984-03-01), Petr
patent: 4475213 (1984-10-01), Medaugh
patent: 4475227 (1984-10-01), Belfield
P. Cummiskey, N. S. Jayant and J. L. Flanagan, "Adaptive Quantization in Differential PCM Coding of Speech, The Bell System Technical Journal, pp. 1105-1118, vol. 52, No. 7, Sep. 1973.

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