Excavating
Patent
1982-06-17
1985-02-05
Atkinson, Charles E.
Excavating
371 8, 375 38, H04B 706
Patent
active
044981732
ABSTRACT:
The present invention relates to a technique using interpolative coders and decoders to permit an analog input message signal to be sampled at the Nyquist rate, each sample is then encoded into a corresponding level of an X-bit code and the encoded corresponding level is then encoded into a unique corresponding digital number pair. Each digital number pair includes two separate digital signals comprising Y bits each for transmission over two separate channels or paths to a remote receiver for inverse decoding. In accordance with the present technique either half of the transmitted signal can be used to reproduce the original signal to a fair degree of accuracy and both halves can provide high-quality reproduction of the original signal.
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R. S. Cheung et al., The Design of a 16 Kb/s Split-Band Adaptive Predictive Coder for Noisy Channels, ICASSP 81, vol. 1, Mar. 1981, pp. 631-635.
AT&T Bell Laboratories
Atkinson Charles E.
Pfeifle Erwin W.
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