Re: [ecasound] Using Gverb with pan

On Fri, Apr 28, 2006 at 09:48:01AM +0300, Kai Vehmanen wrote:
> Hi,
>
> On Mon, 24 Apr 2006, Joel Roth wrote:
>
> >Gverb docs (actually info from analyseplugin -- see below)
> >seems to say that this effect converts one input to two
> >outputs.
> [...]
> >ecasound -i one-channel.wav \
> > -el:gverb,80,9,0.9,0.75,0,-6,-8 \
> > -o alsa,stereo
>
> the gverb output will be stereo, but with the above setup, the alsa device
> might be opened in mono mode, so you'll only hear the first channel.
> To work around this, open the the output in stereo mode and it should
> work:
>
> ecasound -i onech.wav -el:gverb,... -f:16,2,44100 -o alsa,stereo
>
> To debug this, run with -ddd and looks for "(audiofx_ladspa)
> Instantiated...". It should print out how many input and output ports are
> really used for the LADSPA plugin loaded.

When I tried running ecasound with -ddd and (also -dddd and -dd)
I found no listing of input or output ports.

I did find that ecasound reported an error. Note that the
file /usr/lib/ladspa/ladspa_list_0 is present and readable.

(eca-static-object-maps) Unable to open plugin file
... "/usr/lib/ladspa/ladspa_list_0".
(eca-object-factory) Creating LADSPA-plugin "GVerb"
(eca-object-factory) Setting parameters: Roomsize (m) = 75.000, Reverb time (s)
... = 12.000, Damping = 0.400, Input bandwidth = 0.750, Dry signal level (dB) = -75.000,
... Early reflection level (dB) = -4.000, Tail level (dB) = -4.000
(eca-chainsetup) Adding chainop to chain default.
(audiofx) Setting samplerate to 44100 for object GVerb. Old value 384000.

The output was only in one channel.

Here is my command line:

ecasound -c -ddd -i onech.wav \
-el:gverb,75,12,0.4,0.75,-75,-4,-4 -f:s16_le,2,44100,i \
-o alsa,stereo

-- 
Joel Roth
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