Method and system to compensate for the effects of packet...

Details Method and system to compensate for the effects of packet... Method and system to compensate for the effects of packet...

2007-09-04

2007-09-04

Pham, Chi (Department: 2616)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C704S503000

Reexamination Certificate

active

10068023

ABSTRACT:
The system includes a jitter buffer for receiving speech packets in a Voice over Internet Protocol (VoIP) system, a playback device for adjusting the playback speed of the received speed packets, and a jitter buffer manager for detecting out of sequence packets in the jitter buffer and for sending commands to the playback device to adjust playback speed based on the detection. The speech signal is played back at the nominal speed when there are no out of sequence packets. The playback speed is decreased when an out of sequence packet is detected, thereby tending to increase the jitter buffer length. When an out of sequence packet arrives, the playback speed is increased in order to restore jitter buffer length to its nominal length.

REFERENCES:
patent: 6377931 (2002-04-01), Shlomot
patent: 6658027 (2003-12-01), Kramer et al.
patent: 6665317 (2003-12-01), Scott
patent: 6683889 (2004-01-01), Shaffer et al.
patent: 6944174 (2005-09-01), Chow
patent: 6956828 (2005-10-01), Simard et al.
Michael R. Portnoff; “Time-Scale Moderation of Speech Based on Short-Time Fourier Analysis”; IEEE Transactions On Acoustics, Speech, And Signal Processing, vol. ASSP 29, No. 3; pp. 374-390; © Jun. 1981.
David Malah; “Time-Domain Algorithms for Harmonic Bandwidth Reduction and Time Scaling of Speech Signals”; IEEE Transactions On Acoustics, Speech, And Signal Processing, vol. ASSP 27, No. 2; pp. 121-133; © Apr. 1979.

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