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T
TeeKayCC
Inspiring
June 8, 2017
Question

BUG? Mix Paste Issue

  • June 8, 2017
  • 1 reply
  • 921 views

For the sake of this post, I'm going to generate Brown Noise. But this happens with any noise and it affects me all the time.

  1. Copy a section of audio
  2. Mix Paste over a different portion of audio with Overlap (Mix) on and a Crossfade duration set

After doing this, you will always end up with an unwanted dip in amplitude.

See those two darker sections? That's where the crossfade was applied.

While I doubt this is technically a bug in the code, I can imagine that it's an unwanted consequence by most users.

I'm sure the algorithm is functioning as intended, but the cross dissolve is far from ideal, leaving gaps throughout the duration of the transitions. This isn't a phase issue, but something about how Audition treats the amplitudes of the clips during the transitions.

I'd be very surprised if there is a use case where this output result is actually desirable.

Does anyone else run into this issue and want to see it addressed?

This topic has been closed for replies.

1 reply

SteveG_AudioMasters_
Community Expert
SteveG_AudioMasters_Community Expert
Community Expert
June 8, 2017

Have a look at your other post!

ryclark
ryclark
Participating Frequently
June 8, 2017

Also what happens when you mix paste actual audio rather than Brown noise? Will you notice that amount of change in reality? It may just be an artefact of the way that Audition's Brown Noise (which may not be completely as random as you expect, behaves when it is mixed together. I notice form your image that the apparent level change isn't even across the frequency range. It is greater the higher the frequency so it may also be dependant on the Crossfade time that you have selected.

T
TeeKayCCAuthor
Inspiring
June 9, 2017

I have this issue all the time in real life with various room tones. Outdoors with lots of traffic and rumbling, indoors with A/C, indoors with no A/C. Any time I have any sort of background noise, this same thing occurs.

Brown noise was for easy visualization.

The same thing happens with any crossfade durations I've tried.

It's much less noticeable if you have a longer crossfade duration (close to 1s or higher), but that's because the dip becomes so much more gradual that it's much less noticeable.

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