- when you design a DSP that following the polyphonic instrument conventions, the MIDI key to freq conversion is done for you. Read again the "MIDI Polyphony Support » in https://faustdoc.grame.fr/manual/midi/
- then you need to activate the polyphonic mode in the Faust IDE, that is « Poly Voices » on the left, and chose the number of voices you want. You’ll se that the GUI then will take a different layout. - then connect the MIDI keyboard by selecting the proper input in then MIDI Input section on the top right. Stéphane > Le 25 sept. 2020 à 02:42, Bob Bobsled <thebobbobs...@gmail.com> a écrit : > > Hi, > > Yes this is all very good information. I haven't used the Web IDE before, so > that was nice to see. > > Using the .dsp code from the ex. tutorial > https://faust.grame.fr/doc/tutorials/#adding-an-envelope-generator , in the > Web IDE it sees my midi keyboard, and shows the midi note number. > > import("stdfaust.lib"); > declare options "[midi:on]"; > declare options "nvoices:12]"; > decimalpart(x) = x-int(x); > phase(f) = f/ma.SR : (+ : decimalpart) ~ _ ; > timbre(f) = phase(f)*0.5 + phase(f*2)*0.25 + phase(f*3)*0.125; > > process = timbre(hslider("freq", 440, 20, 10000, 1)) > * hslider("gain", 0.5, 0, 1, 0.01) > * (button("gate") : en.adsr(0.1,0.1,0.98,0.1)); > > effect = dm.zita_light; > > > However the result is the same as always when I hit run. I get a gui with > the ubiquitous gate button. What I'm searching for is to play a key on the > external usb midi keyboard and have it play the corresponding frequency. > > I can make a single midi key control the gate button, but that's still not > quite I'm searching for because I still need to change frequency using a > slider. There must be a way to set frequency to the midi keys in the .dsp, > but this bit of code model seems hard to locate. > > It might look roughly something like this, but not sure how to pass note > numbers # to the midi key. > > freq = midikey2hz([midi:key #]); > ... > process = gate* freq; > > Regards, > Bob > > On Wed, Sep 23, 2020 at 4:06 PM Thadeus Reed <t...@creativecontrol.cc> wrote: > Hi Bob, > > I'm not sure what your development setup is but I found it very helpful to > use the Web IDE when developing https://faust.grame.fr/ide/ . This has a > dropdown menu that lets you choose the MIDI input that controls your .dsp. I > believe this only works in Chrome because of the WebMIDI implementation. > > If you look at the tutorial > https://faust.grame.fr/doc/tutorials/#adding-an-envelope-generator it shows > the basic setup for a MIDI controlled synthesizer. The "gate", "freq", and > "gain" variables will be connected automatically to incoming MIDI "gate", > "midinote", and "velocity" respectively. > > If you are outside of the IDE I believe you have to have MIDI enabled with > declare options "[midi:on]"; > and if you need polyphony > declare options "[nvoices:12]"; > at the top of your .dsp file. There are more options explained in > https://faust.grame.fr/doc/manual/#midi-and-polyphony-support . > > How you connect different MIDI controllers outside of the Web IDE will depend > a lot on which platform you are compiling the DSP for. > > I hope that helps, > Thadeus > > http://www.creativecontrol.cc > > > On Wed, Sep 23, 2020 at 5:43 PM Bob Bobsled <thebobbobs...@gmail.com> wrote: > How does one play a .dsp instrument using an external usb midi keyboard? > I would like to play the midi keyboard keys and hear the frequency associated > with the > midi key being played. Not a virtual keyboard, not a smartphone, but an > external usb keyboard. > > I have tried various faust2scripts, but nothing seems to work. I thought > perhaps faust doesn't do it; since the gate button is ubiquitous, and there > is next to nothing available for help using an external midi keyboard to > trigger frequencies. A simple .dsp example would suffice, if someone is > willing to share. > > > _______________________________________________ > Faudiostream-users mailing list > Faudiostream-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/faudiostream-users > _______________________________________________ > Faudiostream-users mailing list > Faudiostream-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/faudiostream-users _______________________________________________ Faudiostream-users mailing list Faudiostream-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/faudiostream-users
