Spyke

Compare the actual audio you want:

  • If you have a FLAC, put it into Audacity/Tenacity
  • Export it with some codec
  • drag-drop this file to the same window, add it as second track
  • apply the effect "invert" on the compressed stream
  • play both at once

You will only hear hisses, maybe more. Its different between every codec and it shows the actual difference between the audio information.

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define truly lossless please. Does it mean checking if the audio has lost any high frequencies like in mp3?

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Any linux programs for checking if an audio file is truly loseless? | Spyke