- Aug 18, 2017
I am trying to compare 2 audio files and I struggle to interpret results from this app. Could someone please help?
I recorded a short audio, while playing a test video on Youtube - it contains pure left, pure right and mixed audio. One file is just simple loop headphone out -> line in. Second file is recorded with an "audio gadget" in the path and I would like to know if it does anything audible (if yes, what does it do?).
Files were too large for an attachment, so I uploaded them here: https://ufile.io/f/vr1fy
Btw. I tried to match L channels and it seems to be working fine. But when I switched to R channels, no audio was detected nor matched. Are my files from Audacity "broken" or did I miss something in the app?
Thanks in advance!
I suspect the issue is the large parts that are silence (noise) that can't be matched between the two tracks. The drift computation requires more meaningful data to match than random noise throughout the track (usually -- music). Turn off drift correction and see if you can get a better result:
Here's the waveform showing large portions that are silence:
Comparing the right channels between the two files without drift correction, I get this:
Comparing left channels:
For left channels, bit perfect check:
Files are NOT a bit-perfect match (match=9.22%) at 16 bits
Files are NOT a bit-perfect match (match=0%) at 32 bits
Files match @ 50.0007% when reduced to 13.41 bits