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Audio POPs at the beginning and end of clips
Posted by Jason D’alberti on March 2, 2011 at 6:53 amWe are editing with 7D footage and audio from an external source (I can’t remember what we used) The audio is saved as a .wav file and imported as such at 48hz. The clips are synced but we’ve noticed a pop at the beginning and end of each clip on the timeline but not when we play them back in the viewer window. I tried re-importing the audio file as an .aif file and syncing a clip but there are still pops.
I’ve looked around the internet and I haven’t found anything that helps.
Does anyone have an ideas or have had similar issues?
Paul Sellis replied 10 years, 5 months ago 7 Members · 11 Replies -
11 Replies
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Tom Wolsky
March 2, 2011 at 7:58 amThis is a fairly common problem caused by cuts being placed at points that aren’t exactly zero crossing points in the waveform. The solution is to add a short, three to four frames, 0dB fade at the beginning and end of each clip.
All the best,
Tom
Class on Demand DVDs “Complete Training for FCP7,” “Basic Training for FCS” and “Final Cut Express Made Easy”
Author: “Final Cut Pro 5 Editing Essentials” and “Final Cut Express 4 Editing Workshop” -
Jason D’alberti
March 2, 2011 at 8:41 amThanks for the response. I’ve done that for now but the problem is it is with EVERY cut. I’m sure it happens from time to time but I can’t believe this happens every time. Plus I have edited before using these same specs (a different project) and didn’t have this problem.
Could there be something more, or am I just going to have to edit it then go back and at the small fade on every cut?
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Andrew Rendell
March 2, 2011 at 10:23 am+1 to Tom’s answer. I usually find that a one frame dissolve is enough to deal with the pop, although a slightly longer one usually sounds better at the end of a clip (but that’s a taste thing rather than a technical one).
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Tom Wolsky
March 2, 2011 at 3:10 pmIt depends very much on the content. With full sounds with good level and atmos it gets lost and you don’t hear it. I find it most noticeable on low level audio with a very clean background. The clicks become much more pronounced.
All the best,
Tom
Class on Demand DVDs “Complete Training for FCP7,” “Basic Training for FCS” and “Final Cut Express Made Easy”
Author: “Final Cut Pro 5 Editing Essentials” and “Final Cut Express 4 Editing Workshop” -
Michael Gissing
March 3, 2011 at 7:27 amClicks and pops are also more common when there is a lot of very low frequency content. You might actually have a DC offset problem with that audio. One way to test is to apply a high pass filter with a roll off below 100hz two two clips that cut together and see if the problem goes away. If so, copy and paste attributes (filters) to all audio.
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Joe Zabrosky
June 13, 2012 at 9:47 pmHi,
I used your Hi Pass recommendation and it worked on the back end of my clips but not the front end. Any ideas? I set the frequency at 10 and the Q at .71.
Thanks,
joejoseph zabrosky
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Joe Zabrosky
June 13, 2012 at 9:54 pmHello,
Is there a quick way to add the 0db fade without the pen tool?
Thanks!
joejoseph zabrosky
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Michael Gissing
June 14, 2012 at 3:06 amHi pass frequency should be higher than 10hz. Try adjusting that up towards 100hz.
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Alan Hughes
February 17, 2015 at 12:16 amIs there any way just to stop Final Cut from adding this pop in the first place? I have this bass sample that is like 3 seconds long that I’m trying to loop to create ambient sound to play while reading in my loud neighborhood (like white noise, but in this case bass noise). But when I play two clips of it in a row, it adds this pointless pop.
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Paul Sellis
February 26, 2016 at 3:53 pmHi,
same problem here:
I need to create a 1 minute sound in FCP7. Export it and make it loop in Quicktime or another player.
But it pops when looping…Of course there’s no way to add the two frames cross fade as suggested by Tom as the loop is not made in FCP
So I need to begin and end my 1 minute sound file at “exactly zero crossing points in the waveform”.How could I manage that?
(I still have FCP7)Many thanks if you can help me!
😉Paul
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