Some errata to my ealier post:
On Mon, 28 Mar 2005, Kai Vehmanen wrote:
> The LADSPA compressors do not export any "current level" output parameters,
> so you cannot monitor those, but you can monitor the audio level.
I'm totally wrong here. :( For example SC4 has two output ports:
"Amplitude (dB)" output, control, -40 to 12
"Gain reduction (dB)" output, control, -24 to 0
> sh> ecasound -i foo.mp3 -o rtnull -evp -el:sc4,3,3,3,3,3,3 -c
I should have tested this first. It seems that current ecasound has a bug
in parsing LADSPA plugin port description which have colon chars in their
descriptions. Unfortunately SC* compressors all have these (for example
"Ratio (1:n)"), and thus ecasound interprets the number of arguments
incorrectly. This was just fixed in CVS. Proper example of SC4 use is:
sh> ecasound -i foo.mp3 -o alsa -evp -el:sc4,0,40,40,-18,3,6,6,0,0 -evp -c
ecasound> start
ecasound> cop-status
... as you can note, the 8. and 9. parameters of SC4 are updated. You can
also use the -evp operator to monitor peak-amplitudes before and after
SC4.
With 'cop-set' you can modify SC4 parameters in real-time and immediately
hear the results.
But, but, for interactive use I strongly recommend using JAMin if at all
possible. It provides a nice and powerful UI with playing with the
compressor parameters.
I also recommend trying out the "-eca" compressor. It is not as flexible
as the LADSPA compressors, but requires less tweaking of parameters, and
thus suits better for ecasound-style use.
And to try all of this, a new snapshot with the LADSPA parsing fix
included is available at:
http://ecasound.seul.org/download/snapshots/ecasound-2.4.1-cvs-20050331.tar.gz
-- http://www.eca.cx Audio software for Linux! ------------------------------------------------------- This SF.net email is sponsored by Demarc: A global provider of Threat Management Solutions. Download our HomeAdmin security software for free today! http://www.demarc.com/info/Sentarus/hamr30 _______________________________________________ Ecasound-list mailing list Ecasound-list@email-addr-hidden https://lists.sourceforge.net/lists/listinfo/ecasound-listReceived on Thu Mar 31 04:15:16 2005
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