Digital multiplex telephone transmission system using statistical properties of speech |
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| Authors: | Flood J.E. Whitehouse K.G. |
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| Affiliation: | University of Aston in Birmingham, Department of Electrical Engineering, Birmingham, UK; |
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| Abstract: | A digital multiplex telephone transmission system is proposed, which should achieve a smaller bandwidth than conventional pulse-code modulation by using the statistical properties of speech waveforms. Each frame of transmitted pulses only contains a coded sample for a channel if the sample differs from the previous one from that channel. The frame can thus contain fewer time slots than there are channels, if there is a high probability of baseband signals changing by less than one quantising level during the frame period. |
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