On 28 September 2015 at 10:43, Tanu Kaskinen <tanuk at iki.fi> wrote: > On Mon, 2015-09-28 at 15:30 +0200, Mikhail Morfikov wrote: >> A few days ago I found a module called module-ladspa-sink , >> and it can be enabled by adding the following code to the >> /etc/pulse/default.pa file: >> >> .ifexists module-ladspa-sink.so >> .nofail >> load-module module-ladspa-sink sink_name=compressor plugin=sc4m_1916 >> label=sc4m control=1,1.5,401,-30,20,5,12 >> .fail >> .endif >> >> It works, but I was trying to figure out what exactly >> control=1,1.5,401,-30,20,5,12 means. There's a link >> (http://plugin.org.uk/ladspa-swh/docs/ladspa-swh.html#tth_sEc2.92), >> where you can find some documentation on the sc4m_1916 plugin, >> but actually I don't really know which of the values corresponds >> to the specific options. In the link, there's 9 parameters, >> and in the code above, there's 7 I think. >> >> Is there someone who could cast a little light on the control >> numbers? > > module-ladspa-sink fails to load if you don't provide all parameters, > so if it works, the plugin really has only 7 control parameters. I > don't know how you then should map them to the documentation. There > very likely is some handy little program somewhere that you could use > to inspect the plugin, but the only one that I can mention off the top > of my head is JACK Rack, but that obviously depends on JACK, and if you > don't already use JACK, it can be a bit of a hassle to set it up. I'd > expect there to be some simple command line ladspa plugin inspector > program too that doesn't need any audio access. There is analyseplugin that is part of the ladspa sdk: % analyseplugin sc4m_1916 Plugin Name: "SC4 mono" Plugin Label: "sc4m" Plugin Unique ID: 1916 Maker: "Steve Harris <steve at plugin.org.uk>" Copyright: "GPL" Must Run Real-Time: No Has activate() Function: No Has deactivate() Function: No Has run_adding() Function: Yes Environment: Normal or Hard Real-Time Ports: "RMS/peak" input, control, 0 to 1, default 0 "Attack time (ms)" input, control, 1.5 to 400, default 101.125 "Release time (ms)" input, control, 2 to 800, default 401 "Threshold level (dB)" input, control, -30 to 0, default 0 "Ratio (1:n)" input, control, 1 to 20, default 1 "Knee radius (dB)" input, control, 1 to 10, default 3.25 "Makeup gain (dB)" input, control, 0 to 24, default 0 "Amplitude (dB)" output, control, -40 to 12 "Gain reduction (dB)" output, control, -24 to 0 "Input" input, audio "Output" output, audio -- Saludos, Felipe Sateler
