Detecting and correcting audio defects to improve the listening experience of older recordings in the Montreux Jazz Festival archive.
Since 1967, 5’000 hours of audio and video were recorded using a variety of media formats such as U-matic video and audio, 1″ and 2″ video and Digital Betacam. Due to natural degeradation of magnetic material over time, audio defects such as pops and cuts have manifested on the original tapes.
By working on the digitized archives, LEMA at EPFL has developed an audio processing algorithms for detecting and correcting defects such as pops and cuts. On average, the pop detection count for this type of defect is 260 pops per hour for one concert.
LEMA (Laboratory of Electromagnetics and Acoustics)