Truncate Silence with Threshold > -20db

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kakaha
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Joined: Sun Feb 07, 2021 6:29 pm
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Truncate Silence with Threshold > -20db

Post by kakaha » Sun Feb 07, 2021 6:36 pm

Hi,

It appears that when I change Threshold value from -20 (default) to -19db or more, OK and Preview buttons become inactive so I can't remove silence when it's louder than -20db.

Why?
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DVDdoug
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Re: Truncate Silence with Threshold > -20db

Post by DVDdoug » Sun Feb 07, 2021 9:02 pm

As a work-around you can reduce the volume (apply the Amplify effect with a negative dB value). Then boost it again after removing "silence".

For example, you can adjust the level by -10dB and then then -30dB is the same as the old -20dB.

kakaha
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Re: Truncate Silence with Threshold > -20db

Post by kakaha » Mon Feb 08, 2021 12:21 pm

DVDdoug wrote:
Sun Feb 07, 2021 9:02 pm
As a work-around you can reduce the volume
Yeah that will work. I just wondering why the upper limit is -20db. Looks like a bug for me.

DVDdoug
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Re: Truncate Silence with Threshold > -20db

Post by DVDdoug » Mon Feb 08, 2021 3:01 pm

I'm sure it's intentional. -20dB is far from silence...

steve
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Re: Truncate Silence with Threshold > -20db

Post by steve » Mon Feb 08, 2021 4:26 pm

DVDdoug wrote:
Mon Feb 08, 2021 3:01 pm
I'm sure it's intentional. -20dB is far from silence...
Originally that control was a drop-down list and you could only select -20, -30, -40 ... -80.
It was changed to a text box so that you could select, for example, -25 dB.

The manual for the next Audacity release says:
Threshold can take values between -20 dB and -80 dB.
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)

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