Jump to content


Photo

removing auto-levels


  • Please log in to reply
1 reply to this topic

#1 Michael Collier

Michael Collier
  • Basic Members
  • PipPipPipPip
  • 1262 posts
  • Gaffer
  • Los Angeles, CA

Posted 30 November 2006 - 09:49 PM

I have some audio that was accidently recorded with auto levels. I can cut it together alright with the auto on, but I was wondering if its possible to remove auto levels. Heres my lame attempt to plan it out:

Take the audio, filter with EQ so all that is left is ambient (consistent) level, except for the auto levels bringing it up and down. Then render out a video track that has a VU with markings of the level. The idea is that the only time the VU would change would corrilate to how the auto level changed the audio.

Then I should be able to come close to smoothing out the audio level changes. I know it won't be perfect, but it may make the ambient noise a bit more consistent. The other option is to find some kind of audio filter that automatically does this function on a sample by sample basis. Does anyone know of a program or plug-in or technique that would get me where I am trying to get (and yes, I know the obvious: check levels before recording...to late now)
  • 0

#2 Tim J Durham

Tim J Durham
  • Sustaining Members
  • 742 posts
  • Director
  • East Coast, Baby!

Posted 30 November 2006 - 10:05 PM

I have some audio that was accidently recorded with auto levels. I can cut it together alright with the auto on, but I was wondering if its possible to remove auto levels. Heres my lame attempt to plan it out:

Take the audio, filter with EQ so all that is left is ambient (consistent) level, except for the auto levels bringing it up and down. Then render out a video track that has a VU with markings of the level. The idea is that the only time the VU would change would corrilate to how the auto level changed the audio.

Then I should be able to come close to smoothing out the audio level changes. I know it won't be perfect, but it may make the ambient noise a bit more consistent. The other option is to find some kind of audio filter that automatically does this function on a sample by sample basis. Does anyone know of a program or plug-in or technique that would get me where I am trying to get (and yes, I know the obvious: check levels before recording...to late now)

Soundtrack Pro has the ability to make an ambient noise print which you can then selectively reduce. Obviously it also affects the audio you want to keep but it does a surprisingly good job once you tweak it a little.
  • 0


Gamma Ray Digital Inc

Ritter Battery

Rig Wheels Passport

FJS International, LLC

Media Blackout - Custom Cables and AKS

Willys Widgets

The Slider

Paralinx LLC

Aerial Filmworks

Technodolly

Abel Cine

Opal

Broadcast Solutions Inc

Wooden Camera

Visual Products

CineLab

CineTape

Metropolis Post

Glidecam

Tai Audio

rebotnix Technologies

Gamma Ray Digital Inc

Paralinx LLC

CineLab

Technodolly

Ritter Battery

Broadcast Solutions Inc

The Slider

CineTape

Aerial Filmworks

Glidecam

rebotnix Technologies

Tai Audio

Media Blackout - Custom Cables and AKS

FJS International, LLC

Visual Products

Abel Cine

Willys Widgets

Wooden Camera

Metropolis Post

Rig Wheels Passport

Opal