Browse Prior Art Database

Method for Synchronizing an Audio Digital Data Stream with another Information Stream

IP.com Disclosure Number: IPCOM000115257D
Original Publication Date: 1995-Apr-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Lamprecht, CS: AUTHOR

Abstract

Disclosed is a method for gradual re-synchronizing when slippage is detected between a digital audio data stream and another information data stream such as video without introducing distortion to the audio. More particularly this present article describes a gradual re-synchronization method that employs the widely know variable time domain harmonic synthesis technique to a digital audio data stream. A compressed digital audio data stream can be employed where the compression technique maintains pitch such as sub-band coding.

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Method for Synchronizing an Audio Digital Data Stream with another
Information Stream

      Disclosed is a method for gradual re-synchronizing when
slippage is detected between a digital audio data stream and another
information data stream such as video without introducing distortion
to the audio.  More particularly this present article describes a
gradual re-synchronization method that employs the widely know
variable time domain harmonic synthesis technique to a digital audio
data stream.  A compressed digital audio data stream can be employed
where the compression technique maintains pitch such as sub-band
coding.

      The re-synchronization  method for a digital audio data stream
and another data stream is outlined in the Figure.  The
re-synchronization method is comprised of a means for determining if
the audio data stream and another data stream are synchronized within
predetermined tolerances and a means for adjusting the digital audio
data stream if synchronization is outside the predetermined
tolerances through the variation of the time domain harmonic
synthesis rate.