Matthais, Thansk for the pointer. I think of the two that midiAp.c is pobably closer to what I'm looking for. Now I have to see if I can compile it. I guess this is then jsut a command line app. Presumably it still shows up in QJC so that I can route to it? Thanks, Mark On Tue, 2004-08-24 at 03:20, Matthias Nagorni wrote: > Hello Mark, > > I take this back to the list because it seems I have to explain the > approach that QMidiArp uses in a bit more detail... > > On Mon, 23 Aug 2004, Mark Knecht wrote: > > > I'm having some trouble with the pattern syntax. Let's says that I want to > > create an arpeggio based around just playing and holding a single key but > > creating a series of non-overlapping notes within an octave or two. > > > > Play and hold: C4 > > > > Hear: (quarter notes at tempo) C4, E4, G4, C5, E4, C4, G3, C3 > > > > and when I release C4 the pattern stops immediately. > > > > the arpeggio should always be based around the single key I'm playing, so if I > > play a G3, I'd hear G3, B3, D4, G4, B3, G3, D3, G2 > > An example of this kind of arpeggiator is miniArp, an example of my ALSA HowTo > http://www.suse.de/~mana/alsa090_howto.html#sect07 > > If you look at its simple pattern synthax you'll find that notes are > explicitely defined (IIRC on base note C). And here the pattern is > transposed whenever you press another key on the keyboard. > > However QMidiArp works differently. It is based on my experience with the > MAP1 hardware arpeggiator. The MAP1 takes the notes into which the pattern > is translated from the chord that you play on the keyboard. This way you can > play whatever complicated chords with the most complicated alterations and > the arpeggiator will still perfectly follow it. > > I already have an extension to QMidiArp in mind: There could be an > additional tab that would have radiobuttons to select chords, like > e.g. M, m, 7, M7, m7, ... This could then serve to fill the note buffer > that the arpeggiator uses for its pattern. But then you would have to > manually change the chord whenever you do a modulation. > > Matthias
