Subject: Re: [ecasound] newbie in need for help!
From: Kai Vehmanen (email@example.com)
Date: Mon Feb 26 2001 - 01:57:00 EET
On Thu, 22 Feb 2001, Marco Ciampa wrote:
> I need to create (automatically possibly) some effects like these:
> 1) in audio track 1 I have some background music that I want to lower of
> audio level with the presence of voice in track 2 (like some radio
> broadcast effects). Is it possible?
At least not easily. The new audio stamp system (added in 1.9dev1)
does allow something like this. Here's an untested example:
ecasound -a:1 -i:bcast.wav -ea:100 -ksv:1,100,0,1,0 \
-a:2 -i:voice.wav -eS:1 \
-a:all -o /dev/dsp
Not perfect but should work. Audio from 'voice.wav' is stored into stamp
'1' (-eS:1). When this stamp is silent, 'bcast.wav' is amplified with
-ea:100. As the stamp (ie. voice.wav) gets loud, we gradually go from max
volume to -ea:0, eventually muting 'bcast.wav'.
-- . http://www.eca.cx ... [ audio software for linux ] /\ . . http://www.eca.cx/sculpscape [ my armchair-tunes mp3/ra/wav ]
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