Re: [ecasound] Q: Removing silence from beginning and end of a file?

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Subject: Re: [ecasound] Q: Removing silence from beginning and end of a file?
From: janne halttunen (jhalttun_AT_pp.htv.fi)
Date: Fri Sep 13 2002 - 11:27:47 EEST

On Fri, 13 Sep 2002 10:21:49 +0300 (EEST)
Tapio Kelloniemi <spam_AT_thack.org> wrote:

> Hi
>
> I'd have two questions about using Ecasound:
> First I want to remove silence from beginning and end of a file. I
> can't use thresold gate, because if volume decreases too much in the
> middle of the file it is truncated too early.

This operator seems to be the way to go:

       -ge:open-threshold-%, close-thold-%,volume-mode
              Threshold gate. Initially gate is closed. It is opened when vol­
              ume goes over 'othreshold' percent. After this, if volume drops
              below 'cthold' percent, gate is closed and won't be opened
              again. If 'value_mode' is 'rms', average RMS volume is used.
              Otherwise peak average is used. When closed, passing audio
              buffers are trucated to zero length.

Maybe with RMS value-mode enabled. (should be less sensitive to sudden volume drops)

janne 

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