Re: [ecasound] I think this has been asked before ... but ...

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Subject: Re: [ecasound] I think this has been asked before ... but ...
From: Kai Vehmanen (kaiv@wakkanet.fi)
Date: Sat Jan 15 2000 - 01:29:48 EET

On Fri, 14 Jan 2000, Jeremy Hall wrote:

> but I do not wish mono signal output.

If you don't convert to mono, it will depend on the listening
environment. With headphones, you won't hear any difference (no
phase cancellation inside your head :)). Even with a nicely balanced
stereo monitoring system, it won't work really well. Of course there
are more sophisticated ways to do this, but they are much more complex
and difficult to implement.
 
> Is there a inversion effect with ecasound?

-ea:-100 and -eac:-100,channel

Here's a simple example:

ecasound -a:1,2 -i track.wav \
         -f:16,1,44100 \
         -a:1 -o channel-1.wav \
         -a:2 -o channel-2.wav -erc:2,1 -ea:-100

Now combine them with:

ecasound -a:1 -i channel-1.wav \
         -a:2 -i channel-2.wav \
         -f:16,1,44100 -a:1,2 -i track-mono.wav

And that's it, you'll only hear hard-panned signals in the resulting
file. 

-- 
Kai Vehmanen <kaiv@wakkanet.fi> -------- CS, University of Turku, Finland
 . http://www.wakkanet.fi/ecasound/ - linux multitrack audio processing
 . http://www.wakkanet.fi/sculpscape/ - ambient-idm-rock-... mp3/ra/wav

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