• Apple Final Cut Pro Legacy

  Getting rid of or minimizing echo

  Posted by Chris Poisson on July 13, 2009 at 8:44 pm

  We have s speaker on camera, recorded in a big room with lots of echo.

  I half know the answer to this, so I’m not holding my breath, but is there ANYTHING to help this? It’s a subtle echo, but annoying.

  Have a wonderful day.

  Charles w. Southworth replied 17 years, 1 month ago 3 Members · 2 Replies
• 2 Replies

• 

  John Fishback

  July 13, 2009 at 9:40 pm

  Hi, Chris. Echo’s one of those things you can’t really get rid of. I read about this filter, played around with it a bit and maybe it can help a little.

  Open the audio in Soundtrack Pro. There’s a filter you get to through the Process Menu > Effects > Dynamics > Enveloper > Show User Presets (twirl them open) > Roomkiller. It works a bit like a noise gate – maybe a bit more sophisticated. Play with the threshold, attack and release time, and negative gain (the gain control to the right). Maybe the addition of a little audience ambiance might help mask the echo. Good luck.

  John

  MacPro 8-core 2.8GHz 8 GB RAM OS 10.5.5 QT7.5.5 Kona 3 Dual Cinema 23 ATI Radeon HD 3870, 24″ TV-Logic Monitor
  ATTO ExpressSAS R380 RAID Adapter, PDE Enclosure with 8-drive 6TB RAID 5

  Final Cut Studio 2 (up to date)

  Pro Tools HD w SYNC IO, Yamaha DM1000, Millennia Media HV-3C, Neumann U87, Schoeps Mk41 mics, Genelec Monitors, PrimaLT ISDN
• 

  Charles w. Southworth

  July 15, 2009 at 6:16 pm

  Well if its a low volume echo echo (echo) probably your best bet is to use that to your advantage. Some combination of a noise gate and judicious use of an expander will get you the best signal to ‘noise’ ratio.
  Before you use the expander do some gain adjustment of the overall audio, DOWNWARD, and then expand the remaining areas. (use a conservative ratio probably between 1.5 and 3)

  As previously mentioned, if you have the option of adding on some noise, you can mask a lot of low volume sounds from listeners ears.

  Another thing thats worth a shot: If the echo has any kind of frequency localized resonance, find it and use a fairly high Q to reduce just that portion of the audio. (Q greater than 4) That one though will depend on two things, first does the exist in the audio and second do you have the ears for it?

  If you have time, Soundhack has some items that can probably help you. But it being a few days since your posting, probably not. (There again, you will need ears most video people lack.)

Reply to this Discussion! Login or Sign Up