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Re: Can I record and have it stop when there is silence?

Posted: Tue May 10, 2011 5:39 pm
by feelthebeat
How is it possible to define the length of the silence, because there might be short "blanks" in a conversation and then its starts again.
What's the final answer then ??
If it is "No, but I think there's a feature request for that... shall your vote be added?"
URL please ?

Re: Can I record and have it stop when there is silence?

Posted: Tue May 10, 2011 5:52 pm
by steve
The answer is, upgrade to Audacity 1.3.13 http://audacityteam.org/download/
and use "Sound Activated Recording" http://manual.audacityteam.org/man/Transport_Menu#sar

Re: Can I record and have it stop when there is silence?

Posted: Thu May 12, 2011 12:29 pm
by feelthebeat
>upgrade to Audacity 1.3.13
Done

>Sound Activated Recording" http://manual.audacityteam.org/man/Transport_Menu#sar
Well, maybe I missed a point, all I see is that I can set the db activation level, unfortunately this is NOT an answer to my question.
How is it possible to define the length of the silence, because there might be short "blanks" in a conversation and then its starts again.
To reformulate:
Say I set the activation level at -42DB.
A person starts talking, Audacity records, after a while this person pause (i.e. stop talking, usually in order to think or for a memory recall) let's say during 3 seconds, then continues.
I do NOT want Audacity to stop recording, because the activation level is breached for 3 sec, I want to set the stop recording when both one is under the activationg level AND this perdure for a given time, let's say 10 sec ! This is something as:
Function triggerStop()
If ( inputSound < -42 DB ) THEN
While (elepasedTime < 10sec)
if ( inputSound > -42 DB ) THEN triggerStop=FALSE; exit triggerStop();
EndWhile
triggerStop=TRUE
ENDIF
EndtriggerStop

This is quite common in radio or conferences and later one can work on the sound file if need be. Silences do have a lot of meaning.

Re: Can I record and have it stop when there is silence?

Posted: Thu May 12, 2011 7:29 pm
by steve
feelthebeat wrote:all I see is that I can set the db activation level
That's correct. I thought everything else had already been covered in the previous posts.

I've added your vote here: http://wiki.audacityteam.org/wiki/Featu ... hest-rated
Sound Activated Recording (currently in Audacity Beta only)

* Pre- and post-roll duration: define a duration to be recorded before the threshold-level sound occurs, and similarly a duration to be recorded after the input falls back below the threshold. Requires buffering of the recording for pre-roll, but is expected behaviour for this type of tool. (30 votes)