Re: [ecasound] sum-mixmode and snapshot 2.3.6-20041222 (was: Re: FYI: Re: ecasound/alsa question (fwd))

From: Adam Linson <>
Date: Sat Jan 22 2005 - 18:29:03 EET


On Wed, 2004-12-22 at 00:28, Kai Vehmanen wrote:
> I've now added a new mixmode to Ecasound CVS which implements
> sum-all-inputs mixing. The old behaviour ('avg' mixing) is still the
> default, but possibly the default will be changed at some point in the
> future. Anyways, with sum-mixing, the above example can be turned into:
> ecasound -z:mixmode,sum \
> -a:1 -f:16,1,48000 -i mono-1.wav \
> -a:2 -f:16,1,48000 -i mono-2.wav -erc:1,2 -eac:0,1 \
> -a:3 -f:16,1,48000 -i mono-3.wav -erc:1,3 -eac:0,1 \
> -a:4 -f:16,1,48000 -i mono-4.wav -erc:1,4 -eac:0,1 \
> -a:all -f:16,4,48000 -o 4ch-mix.wav
> You can select the mixing mode with -z:mixmode,sum (and -z:mixmode,avg
> respectively), or more permanently with the 'default-mix-mode' ecasoundrc
> option. See ecasound(1) and ecasoundrc(5) for more information.
> A new snapshot including the mixmode changes is available at:
> Btw; this is one of the major items on the 2.4.x feature roadmap [1].
> That means first 2.4 release is just around the corner.
> [1]

this summing mode is great (and in my opinion the more intuitive
behavior), thank you!

somehow a "-m" option (below) ended up in the ecasound-iam man page (of
the above-mentioned snapshot, at least). i am assuming this is not an
alias, just an accident which was meant to be "-z", or is it?

Interpret general chainsetup parameters like for example "-b"
(buffersize), "-m" (mixmode), "-n" (name), etc. See ecasound(1) for
more info. [-]


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Received on Sat Jan 22 20:15:33 2005

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