Method and apparatus for dynamically adjusting playout delay

Method and apparatus for dynamically adjusting playout delay

Disclosed is a method and apparatus for dynamically adjusting playout delay for voice packets, which mainly includes three parts of dynamic adjustment, i.e. playout delay, silence length, and jitter buffer size. In the invention, the time for playout delay is real-time adjusted according to the prob...

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Hauptverfasser: SHIUE, DE-HUI, WU, YI-WEI, LIN, ZHE-HONG
Format: Patent
Sprache:chi ; eng
Schlagworte:
ACOUSTICS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MULTIPLEX COMMUNICATION
MUSICAL INSTRUMENTS
PHYSICS
SPEECH ANALYSIS OR SYNTHESIS
SPEECH OR AUDIO CODING OR DECODING
SPEECH OR VOICE PROCESSING
SPEECH RECOGNITION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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creator SHIUE, DE-HUI
WU, YI-WEI
LIN, ZHE-HONG
description Disclosed is a method and apparatus for dynamically adjusting playout delay for voice packets, which mainly includes three parts of dynamic adjustment, i.e. playout delay, silence length, and jitter buffer size. In the invention, the time for playout delay is real-time adjusted according to the probability distribution of the number of packets buffered in the jitter buffer. A voice active detection is taken to detect silence within a voice packet. By dynamically adjusting the silence length in the voice packet, the present invention reduces the network variation impact on the voice quality. It also overcomes the drawback of conventional techniques for estimating playout delay, and reduces the whole computation complexity of the playout delay for voice packets.
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subjects ACOUSTICS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MULTIPLEX COMMUNICATION
MUSICAL INSTRUMENTS
PHYSICS
SPEECH ANALYSIS OR SYNTHESIS
SPEECH OR AUDIO CODING OR DECODING
SPEECH OR VOICE PROCESSING
SPEECH RECOGNITION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
title Method and apparatus for dynamically adjusting playout delay
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