Audio Quality Assurance: An Application of Cross Correlation

Bolette Ammitzbøll Jurik and Jesper Sindahl Nielsen:
Audio Quality Assurance: An Application of Cross Correlation.
In: iPRES 2012 – Proceedings of the 9th International Conference on Preservation of Digital Objects. Toronto 2012, 144-149.
ISBN 978-0-9917997-0-1

We describe algorithms for automated quality assurance on content of audio files in context of preservation actions and access. The algorithms use cross correlation to compare the sound waves. They are used to do overlap analysis in an access scenario, where preserved radio broadcasts are used in research and annotated. They have been applied in a migration scenario, where radio broadcasts are to be migrated for long term preservation.

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