CEDAR Audio announces DeThump 96 for SADiE

9 May 2001

Thumps are most often encountered in signals transcribed from optical soundtracks, damaged 78 rpm records and scratched vinyl discs, but they also occur in modern recordings when, for example, microphones and stands are bumped. They can last for many hundreds of milliseconds, so conventional declicking processes are unsuitable for restoring audio containing them, and their spectral content will usually overlap the genuine signal, so simple filters cannot remove them without degrading the underlying signal.

Consequently, CEDAR Audio is pleased to announce the release of DeThump 96 for SADiE, which allows users to remove these low frequency noises from audio digitised at sampling rates of up to 96kHz. The process uses the data in and around the damaged signal to build up a picture of what the low frequency data would have been had the thump not occurred, and then inserts this while leaving the undamaged high frequency data unaffected. Furthermore, DeThump 96 utilises the floating-point processing offered by SADiE to ensure the highest possible sound quality throughout the system. Processing is very rapid, allowing near instant evaluation of the result.

The range of CEDAR processes now available on SADiE comprises:

  • DeClick & DeClick 96
  • DeCrackle & De Crackle 96
  • DeThump & DeThump 96
  • DeNoise

For further information:

CEDAR Audio Limited, 20 Home End, Fulbourn, Cambridge, CB21 5BS, United Kingdom.
t: +44 1223 881771
f: +44 1223 881778
e: info@cedaraudio.com