Subject: Re: [ecasound] I think this has been asked before ... but ...
From: Jeremy Hall (jhall@UU.NET )
Date: Fri Jan 14 2000 - 14:08:20 EET
but I do not wish mono signal output.
Is there a inversion effect with ecasound?
In the new year, Kai Vehmanen wrote:
> On Thu, 13 Jan 2000, Jeremy Hall wrote:
> > If you right-shift the left channel by a factor of say 50%, then move it
> > back, you end up with zeros on the "right" side of the left channel.
> Unfortunately panning doesn't work this way. It simply controls the
> relative amplitude of two channels (left and right). When some audio
> elements is present on both channels, it appers to be on center.
> So to get rid of the center you need get rid of shared parts.
> One way to do is to invert the phase of one channel and then combine.
> In the resulting mono-file, shared parts are cancelled out.
> > I want to remove his signal, yet preserve the rest with a band filter,
> > except the band is not frequency related, rather it is a scale between 0
> > and 100, 0 being left, and 100 being right. so on this scale, if something
> > represents a 50, I want to remove it. With a center freq of 50, and a
> Hmm, I understand what you mean. It won't be easy to implementing
> the 0-100 parameter.
> Kai Vehmanen <firstname.lastname@example.org> -------- CS, University of Turku, Finland
> . http://www.wakkanet.fi/ecasound/ - linux audio processing
> . http://www.wakkanet.fi/sculpscape/ - ambient-idm-rock-... mp3/ra/wav
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