Process and apparatus for improving the utilization of transmiss

Details Process and apparatus for improving the utilization of transmiss Process and apparatus for improving the utilization of transmiss

1976-08-17

1978-01-31

Claffy, Kathleen H.

179 1555T, 179 15BW, H04B 166, H04J 318

Patent

active

040717070

ABSTRACT:
The known process for transmitting two or more audio signals over a single transmission channel by eliminating alternate small segments from a first signal and filling the gaps with alternate small segments of a second signal and then filling in the gaps in the received signals with repeated segments, is found to be significantly improved with respect to comprehension or understandability, etc., if the audio signals are divided into a low frequency subband and one or more high frequency subbands and if the lowest frequency subband is transmitted substantially continuously while the higher frequency subbands are segmented and transmitted as before. Processes and apparatuses for splitting the audible signals into high and low frequency subbands and for treating the signals both on the sending and receiving sides to take advantage of the above discovery are disclosed.

REFERENCES:
patent: 1911850 (1933-05-01), Sandeman
patent: 2870260 (1959-01-01), Guenther
patent: 3150374 (1964-09-01), Sunstein
patent: 3158693 (1964-11-01), Flanagan
patent: 3467783 (1969-09-01), Magnuski
patent: 3959597 (1976-05-01), Keiser

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