Voice data transmission system and method

Details Voice data transmission system and method Voice data transmission system and method

H - Electricity

04

M

379/66

H04M 7/00 (2006.01) H04J 3/06 (2006.01) H04L 12/56 (2006.01) H04L 12/64 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2001619

A voice data transmission system and method which can reduce a transmission delay time and can remove the unnatural conversation of a received voice due to the truncation of head part of the voice. The signal transmission side of the voice data transmission system, when a voice detection signal is generated. continuously transmits. at a transmission rate faster than a usual transmission rate, a first voice data block at the time of generation of the voice detection signal as well as voice data blocks which are followed by the first voice data block and which correspond to a time duration from the generation time of the voice detection signal block to a predetermined time. In a voice detection mode. the data trans- mission side subjects voice data to a blocking operation and. after the blocking operation is completed, transmits the voice data block. The signal reception side of the data transmission system, when receiving a voice packet signal following by the continuation of a predetermined time of silence (voice absent state), estimates a fluctuation absorbing delay time for the voice packet signal on the basis of transmission delay times between packets corresponding to its head part, attaches packets corresponding in number to the estimated fluctuation absorbing delay time to the head part of the received voice packet signal.

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