Voice coding communication system and apparatus

Details Voice coding communication system and apparatus Voice coding communication system and apparatus

1994-06-17

1996-07-23

MacDonald, Allen R.

Electrical audio signal processing systems and devices

Hearing aids, electrical

Specified casing or housing

395 2, 395 235, 395 224, 381 46, G10L 500

Patent

active

055398588

ABSTRACT:
A voice coding communication system in case of applying an adaptive differential PCM system in which a discontinuous transmitter is provided at the transmitting side to reduce its power consumption, transmission is suspended during a silent duration, and a pseudo-noise is generated at the receiving side and is used as the reproduced output during the silent duration. Discomfort is avoided in hearing the reproduced voice which is caused by the difference between the level of the pseudo-noise and the level of a background noise at the transmitting side.

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patent: 5054073 (1991-10-01), Yazu
patent: 5121349 (1992-06-01), Waito

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