Compression Gain Reduction

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cpsmusic
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Compression Gain Reduction

Post by cpsmusic » Tue Jul 29, 2014 3:53 am

Hi,

I'm currently editing and cleaning up some live radio programs. I often find that I need to use compression. I know Audacity uses an "offline" model for effects processing however I'm getting a bit frustrated because I can't figure out how to monitor gain reduction - is this possible in Audacity?

Cheers,

Chris

steve
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Re: Compression Gain Reduction

Post by steve » Tue Jul 29, 2014 4:32 am

cpsmusic wrote:I'm currently editing and cleaning up some live radio programs.
Is that, programs on the radio that you are recording, or live shows that you are recording to go on a radio station?
If you can give a clear picture of what you are doing, we may be able to offer some suggestions / tips / tricks to help.
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)

cpsmusic
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Re: Compression Gain Reduction

Post by cpsmusic » Tue Jul 29, 2014 4:56 am

Neither!

They're recordings of live shows recorded from the studio desk to a portable recorder. I'm editing the shows for podcasting.

Gale Andrews
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Re: Compression Gain Reduction

Post by Gale Andrews » Tue Jul 29, 2014 3:09 pm

cpsmusic wrote:They're recordings of live shows recorded from the studio desk to a portable recorder. I'm editing the shows for podcasting.
Then you are not using Audacity to record, correct? So are you looking for the controls in Audacity Compressor to have an effect when you preview?

Audacity doesn't do that yet, but it might happen some day.


Gale
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cpsmusic
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Re: Compression Gain Reduction

Post by cpsmusic » Tue Jul 29, 2014 10:44 pm

Thanks. You're right, I'm using Audacity only for the editing not the recording (I don't do the recording).

Cheers!

kozikowski
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Re: Compression Gain Reduction

Post by kozikowski » Wed Jul 30, 2014 2:03 am

I found Chris's Compressor is a good simulation of the US Broadcast Compressor.

http://theaudacitytopodcast.com/chriss- ... -audacity/

Change the first number, Compression, from the default 0.5 to the new 0.77 and the compressed sound appears remarkably like the local KPCC broadcasting the same show. Some shows I listen to in the car are unlistenable without that.

Yes, unprocessed podcasts are a big surprise for someone used to the highly processed broadcast sound. I've never run into this problem, but people post that the first and last handful of seconds could experience unusual behavior. Put some silence into those areas and the problem should go away.

Koz

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