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compressor deleting wafeform

Posted: Tue Nov 24, 2020 7:32 pm
by kenfranklin71
Hi

I have been using audacity to edit podcasts for a number of years but use the same basic functions and tools over and over and so I am not particularly experienced from a technical perspective.

Tonight I imported a wav file and, as normal, tried to use the standard compressor as a first step. I have not changed any settings but for some reason after it applied I was left with a no waveform. It is as if it deleted the file.

I reimported and tried again but the problem remined. I updated audacity to the latest version, but no luck. I have been performing the same steps for about 6 years and have no idea why this has suddenly happened now.

I am using windows 10 and the recording was made on a mixpre 3 mk2.

Any help on this would be very much appreciated.

Ta

Re: compressor deleting wafeform

Posted: Tue Nov 24, 2020 7:55 pm
by DVDdoug
What version of Audacity and what compressor settings? (A high compression ratio and a low threshold can compress-down to almost nothing.)

Re: compressor deleting wafeform

Posted: Wed Nov 25, 2020 6:45 pm
by kenfranklin71
2.4.2

3:1, -16DB

The whole waveform disappears. There is nothing.

Re: compressor deleting wafeform

Posted: Wed Nov 25, 2020 7:22 pm
by DVDdoug
Well... I can't explain that...

But that seems like an awful lot of compression, unless your peaks are not too far above the -16dB threshold.

And you are using built-in compressor effect, right? Effect -> Compressor? And it looks like this?

Re: compressor deleting wafeform

Posted: Thu Nov 26, 2020 3:36 pm
by kenfranklin71
yea that's what I am using. thanks for your time anyway.

Re: compressor deleting wafeform

Posted: Thu Nov 26, 2020 4:03 pm
by steve
What settings are you using? (all of them)

Roughly how big is the waveform before applying the Compressor? (a screenshot might be useful - see here for how to attach the screenshot to your post: viewtopic.php?f=49&t=64936)

How long is the track?
Mono or stereo?
Do other effects work as expected?

Re: compressor deleting wafeform

Posted: Sat Nov 28, 2020 12:49 pm
by jademan
kenfranklin71 wrote:
Tue Nov 24, 2020 7:32 pm
Any help on this would be very much appreciated.
Ken, can you post a 10 second sample of the .wav file here that illustrates your issue ?

Re: compressor deleting wafeform

Posted: Sat Nov 28, 2020 2:44 pm
by kenfranklin71
Thanks guys.

Not sure what caused it, or why it fixed it but I deleted the fist sec of the file and this allowed me to compress as normal.