Transmission system for digitized voice signals and coder/decode

Details Transmission system for digitized voice signals and coder/decode Transmission system for digitized voice signals and coder/decode

1995-12-18

1998-07-28

Bocure, Tesfaldet

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

395 291, H04B 166

Patent

active

057871191

ABSTRACT:
The novel transmission system includes a compression/decompression circuit CVA formed by two processors DSP and .mu.P. The first processor DSP is coupled to a combination analog/digital and digital/analog converter CNA-AN for producing and processing voice signals received from and supplied to the subscriber connected to the accesses to such processor. It is this processor DSP that performs the compression and decompression operations. A second processor .mu.P has receive and transmit accesses for the digital signals grouped in frames. To avoid unacceptable delays in processing of the voice signals, signal compression is given priority over signal decompression.

REFERENCES:
patent: 5455576 (1995-10-01), Clark, II et al.
Jayant et al., "ding of Speech and Wideband Audio", AT&T Technical Journal, Sep./Oct. 1990, pp. 25-41.

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