I'm interested in this, too. I haven't tried it, yet, but, i've read some of the docs, so I'll try to share what I've learned so far. Hopefully someone who has done this will fill in the gaps .... http://www.wakkanet.fi/~kaiv/ecasound/Documentation/examples.html has a section "Using controller sources with effects" Example #4 shows this: " ecasound -i file.wav -o /dev/dsp -ef3:1000,1.0,1.0 -kos:1,500,2000,1,0 \ -kos:2,0.2,1.0,0.5,0 \ -kx -km:1,0.1,1.5,2,1 Ok, let's get real whacky. Here a 1Hz sine oscillator is assigned to the cutoff frequency, while other controller is controlling resonance. Now we add a MIDI-controller, that controls the second sine oscillator. " The ecasound man page: http://www.wakkanet.fi/~kaiv/ecasound/Documentation/ecasound_manpage.html has a section on MIDI setup and another on CONTROL ENVELOPE SETUP. Under the latter is this option: "-km:fx-param,start-value,end-value,controller,channel MIDI continuous controller (control change messages). Messages on the MIDI-channel 'channel' that are coming from controller number 'controller' are used as the controller source. As recommended by the MIDI-specification, channel numbering goes from 1 to 16. Possible controller numbers are values from 0 to 127. The MIDI-device where bytes are read from can be specified using -Md option. Otherwise the default MIDI-device is used as specified in ~ecasound/ecasoundrc (see ecasoundrc(5)). Defaults to /dev/midi." To send CC messages to ecasound I think you could use alsa's virmidi driver. There is a quick toot covering using a sequencer to control a softsynth this way which might be applicable: http://linux-sound.org/quick-toots/4-sequencers_and_softsynths/quick-toot-midisynth_howto.html then as far as a piece of software to do the actual controlling ... there's something called vkeyboard ... perhaps one of the sequencers apps like muse or rosegarden could be used? QMidiControl, xphat and others listed here: http://sound.condorow.net/midi.html, might be interesting. Though some of those links are broken ... So, the pieces are all there, I think. But, as I said, I haven't tried to put them together, yet. It looks like it is possible. But, anyway, I hope this helps. -Eric Rz. On Thu, Nov 13, 2003 at 12:02:14PM +0100, Alex Marandon wrote: > Hello, > > This my first post in this list so I introduce myself. I am non-native > english speaker, so forgive me if my english is not correct, I hope at > least it will be understandable ;) About my computer skills I'd say that > I'm an advanced beginner in Linux and *BSD systems, i'm very far to be > expert but I manage to deal with my own problems without much pain now. > I work as a Perl/Python programmer and I slowly learn C/C++. > > For a few days now I've started to explore the world of linux > audio-related software, so I'm a real newbie on this topic. I've played > a little bit with ecasound (i love its concept) and I wonder if there is > a way to control parameters of operators in realtime using software > midi-controllers. If yes, what software to use ? What configuration ? Is > it possible, and how to perform automation in order to replay what was > done manually ? Any information about how to achive this goal is > welcome. > > Thanks.
