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Ivan_K_
Ivan_K_
Participant
July 25, 2017
Question

Dual mono and amplitude statistics

  • July 25, 2017
  • 1 reply
  • 461 views

Hello everyone!

I had a weird problem when exporting dual mono from Audition. I need to get dual-ch mono track with absolutely identical L & R channels, matching -23 lufs.

After using Match Loudness I got an excellent result. Here it is:

All indicators in both columns are identical.

But after saving or exporting file i got a different result:

Minimum RMS Amp and Dynamic Range values differs for the left and right channels. I've already tried conert to mono, then back to stereo + match loudness. No result.

Is there any way to fix this?

Any help would be appreciated. Thank you!

    This topic has been closed for replies.

    1 reply

    SteveG_AudioMasters_
    Community Expert
    SteveG_AudioMasters_Community Expert
    Community Expert
    July 25, 2017

    The error you're looking at here is so small as to be completely insignificant, and is most likely a rounding error in the calculations. Humans have difficulty, even with steady tone, of spotting a 1dB difference - an error of 0.04 or 0.05dB is pretty much nothing. You'd even have trouble measuring this sort of difference on a precision meter!

      D
      dmitriyscherbakov
      Participant
      July 26, 2017

      Thanks for your reply! But, for example, we hand over a master to a television channel, which, based on their requirements, requests two absolutely identical audio channels.

        SteveG_AudioMasters_
        Community Expert
        SteveG_AudioMasters_Community Expert
        Community Expert
        July 26, 2017

        What makes you think they won't be? This is only a calculation error, not a real one. If you want to prove this, copy one channel and invert-paste it over the other. If everything disappears, it's identical. If there was a real error, it would almost certainly show in the max and min sample values - and they are identical.

        But as a general principle, if you want two identical tracks (although heaven knows why anybody would...) create the first one, and copy-paste it into the other channel, or wherever you want it, and don't bother messing around with exporting it - although I suspect that the result certainly should, and almost certainly will, be identical.

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