Reduction of parasitic pitch variations in archival musical recordings

作者：Czyzewski Andrzej^*; Maziewski Przemyslaw; Kupryjanow Adam

来源：Signal Processing, 2010, 90(4): 981-990.

DOI：10.1016/j.sigpro.2009.09.015

• Audio restoration
• Parasitic pitch variations
• Wow and flutter

A new method for reducing parasitic pitch variations in archival audio recordings is presented. The method is intended for analyzing movie soundtracks recorded in optical films. It utilizes image processing for calculating and reducing effects of tape shrinkage being one of the main reasons for parasitic pitch variations in audio accompanying moving images. As long as the film tape characteristics are known the new method can be easily tuned to analyze archival recordings. The new method is also compared to some previous approaches to pitch variation correction.

• 出版日期2010-4