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J
John24068371ttkr
Participant
April 29, 2024
Question

Audition clips are audible outside of the edits

  • April 29, 2024
  • 1 reply
  • 439 views

Hello, 

I am using Adobe Audition for sound design for a short film for the first time and am finding that the clips I edit are audible outside of the edits. The sound does not start or stop exactly where I’ve edited it; it starts a few frames before the clip and continues a few frames after. This happens whether I have applied a fade or not. It seemingly creates its own fade, which exists outside of the visible clip, making it impossible to achieve the accuracy I need. Is there a way to fix this, or turn off this feature? 

Thank you!

-John

This topic has been closed for replies.

1 reply

SteveG_AudioMasters_
Community Expert
SteveG_AudioMasters_Community Expert
Community Expert
April 30, 2024

There are two settings in Edit>Preferences>Data that set the values for crossfade smoothing. The delete/cut setting should be 2ms, but the one that may well be causing your difficulties is the 'all edit boundaries' one, if it's set too high. You shouldn't reduce either of these to zero, because then you will inevitably get clicks at transitions - that's why they are there at all.

 

Let's say that you are running at 30fps with your video. One frame of this will last 33.3ms, so any smoothing time that's less than this value should be fine. The sort of figure that would keep the clicks at bay but still give you audibly clean cuts is about 5ms. But if, for instance, it was set at 65-70ms then yes, you are likely to get a 2-frame bleed between clips.

 

The other thing that it's not uncommon to do is to edit the copy of your source audio that you are using so that there is a couple of hundred ms of silence at the start and finish of each clip - then you won't have the problem anyway. Yes I do realise that this isn't always possible...

    T
    The Jeffo
    Participant
    May 15, 2024

    Quick question about those 2 fade preference settings:  Are those specified fades applied during PLAYBACK? Or are they baked into the clips themselves during EDITING (at whatever duration was set in preferences at the moment the clip was cut)? In other words, if I play with the settings, will my changes immediately affect every cut/edit in my project?

     

    You're a legend, Steve!

    SteveG_AudioMasters_
    Community Expert
    SteveG_AudioMasters_Community Expert
    Community Expert
    May 15, 2024

    That is a good question, and something I perhaps should have addressed. The fades are applied at the edit stage. If you think about it, they have to be, because a playback-only artifact wouldn't work anywhere else. And this is a Waveform issue, not a Multitrack one, as Multitrack doesn't do edits per se - it's a giant file player.

     

    So with Waveform edits, what is more important is to note that the numbers in the data settings are the ones that apply at the time of the edit you make - so if you change the numbers there during the process of editing a file, then the new numbers will not apply to the existing edits. This is not retrospective. Here is a demonstration:

    This is tone with silence inserted into it. The first silence has 2ms fades, and the second one has 40ms ones. And then the final one is back to 2ms again.

     

    What I don't get about the OP's question is that I get the impression he thinks this is happening in Multitrack. It can't be - all that happens there if you put an abrupt cut-off file in is that it's truncated at mixdown by about 2ms, and there's nothing you can do about that. And that's way shorter than the length of a frame...

     

    It's perfectly possible for anybody to check this out for themselves; I haven't done anything other than use Audition itself to prove how it behaves.

     

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