• Audio

  Construction Equipment

  Posted by Elliott Sidey on July 24, 2012 at 6:07 pm

  The loud beeping noise of construction equipment is apparent briefly for one of my video/audio recordings.
  Any ideas how to isolate that noise and maybe apply a filter in FCP7 to drown it out? without losing my interview subjects voice?

  Thanks!

  Peter Groom replied 14 years, 1 month ago 3 Members · 8 Replies
• 8 Replies

• 

  Peter Groom

  July 25, 2012 at 9:30 am

  If you want to post a sample mp3 up via the cow so we can have a listen (and a go at removal) that would be fun?

  I dont think youve got any chance in FCP.
  Peter

  Post Production Dubbing Mixer
• 

  Elliott Sidey

  July 25, 2012 at 6:36 pm

  What program do you suggest? I would love to understand what filters/passes to apply in a program like Logic.

  Thanks
• 

  Peter Groom

  July 25, 2012 at 9:13 pm

  Id use Isotope rX but its costly
  Id like to have a listen and a go at fixing it if you can upload
  Peter

  Post Production Dubbing Mixer
• 

  Richard Crowley

  July 26, 2012 at 5:59 am

  I don’t know anything about FCP or any other cult-of-Mac hardware or software, but any legitimate audio editing application should have a feature to filter out specific frequencies (notch filter, parametric filter, etc.) Those back-up audio alarms on vehicles are pretty much a pure tone and thus relatively easy to filter out without losing too much of the desired signal.

  For example, in Adobe Audition, I can manually “tune” the notch filter up and down to identify the specific tone and completely remove it.

  But as others have already mentioned, without posting an actual sample that we can hear and test, we can’t really offer you anything more than vague theoretical responses.
• 

  Peter Groom

  July 26, 2012 at 8:47 am

  Hi Richard
  yes you are right and FCP/ AVID etc etc do have basic notch filtering.
  The impressive thing about dedicated tools for restoration and tones removal is that they “learn” exactly which sound you want to replace and attenuate / remove it, and its harmonics. Thus leaving other sounds of the same frequencies (say in a vo) alone.

  BUT theyre not an easy learn. Sometimes I get amazing results, and sometimes I struggle to improve things much. I think its down to training.
  Peter

  Post Production Dubbing Mixer
• 

  Elliott Sidey

  July 26, 2012 at 8:08 pm

  So not 100% i did this right, but heres an aiff of the sample clip. So this happens throughout the entire clip, could u guys give me some recommendations on how to fix the entire clip?
  I’ve been playing with the notch filter with no success.

  I have FCP7, FCPX, and Adobe Audtion

  https://www.dropbox.com/s/slb0qe6c56rnen4/Sample%20Cut%20Beep_1-2.aif
• 

  Peter Groom

  July 27, 2012 at 8:13 am

  id get some proper audio restoration tool on it. (like isotope rx) I dont think merely filters will get it out.
  heres my attempt

  Post Production Dubbing Mixer
• 

  Peter Groom

  July 27, 2012 at 8:14 am

  4442_samplecutbeep12afterfix.aif.zip

  Post Production Dubbing Mixer

Reply to this Discussion! Login or Sign Up