Voice activated date rate change in simultaneous voice and data

Details Voice activated date rate change in simultaneous voice and data Voice activated date rate change in simultaneous voice and data

1993-11-15

1995-12-12

Safourek, Benedict V.

Multiplex communications

Wide area network

Packet switching

375216, 375264, H04L 2734

Patent

active

054756910

ABSTRACT:
A simultaneous voice and data modem performs "voice-activated" data rate changes to improve the transmission quality of the voice signal. In particular, when the simultaneous voice and data modem detects that a local telephone set has gone "off-hook," the simultaneous voice and data modem selects a signal space with a lower symbol density, which, although resulting in fewer bits per symbol, provides for a higher quality voice transmission.

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