Method and means for improving the spectrum utilization of commu

Details Method and means for improving the spectrum utilization of commu Method and means for improving the spectrum utilization of commu

1977-07-18

1978-12-26

Claffy, Kathleen H.

179 15AS, H04B 166

Patent

active

041317653

ABSTRACT:
A system and method for improving the spectrum utilization of communications channels.
In certain embodiments of the invention a plurality of narrowband communications channels are used to transmit a multiplicity of speech signals.
In another embodiment of this invention, a multiplicity of speech signals jointly utilize a common transmission facility and circuitry shifts the amount of bandwidth assigned to each channel as a function of the short term characteristics of the individual speech signal.
Special circuitry is provided to reduce the loss of consonant sounds at the initiation of speech bursts as well as the end of the bursts.

REFERENCES:
patent: 2388001 (1945-10-01), Loughren
patent: 3389225 (1968-06-01), Myers
patent: 3412218 (1968-11-01), Comerci
patent: 3424869 (1969-01-01), Anderson et al.
patent: 3832491 (1974-08-01), Sciulli et al.

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