The tempo in BPM is what drives the TimeSignature class in LicK <https://github.com/heuermh/lick/blob/master/lick/duration/TimeSignature.ck>, for example a 4/4 kick drum
RolandTr808 rolandTr808; TimeSignature.common(120) @=> TimeSignature ts; ts.quarterProvider() @=> QuarterProvider q; spork ~ Loops.loop(rolandTr808.kickE, q).run(); // wait a minute, then change the tempo to 110 BPM 1::minute => now; 110 => ts.tempo; // wait another minute, then decelerate the tempo by 0.8 over the next 30 seconds 1::minute => now; spork ~ ts.decel(0.8, 30::second); etc. If I can calculate the BPM from external clock, then I can adjust the BPM in the TimeSignature class as it is running. michael > On Jul 2, 2019, at 4:37 PM, Mario Buoninfante <mario.buoninfa...@gmail.com> > wrote: > > about receiving external clock, I think the goal there is to use the clock to > drive the algorithm. > I wouldn't try to calculate the BPM if not for just displaying it somewhere. > > On Tue, 2 Jul 2019 at 22:17, Michael Heuer <heue...@gmail.com > <mailto:heue...@gmail.com>> wrote: > All, > > I'm curious how to use MIDI clock effectively in ChucK, in two main use cases: > > From a sample-rate-based timer in ChucK, how should I send out MIDI clock? > > while (true) { > 10::ms => now; > // send MIDI clock > } > > or > > TimeSignature.common(120) @=> TimeSignature ts; > > while (true) { > ts.e => now; > // send MIDI clock > } > > or (this one allows the caller to modify the tempo later) > > TimeSignature.common(120) @=> TimeSignature ts; > ts.eighthProvider() @=> EighthProvider e; > > while (true) { > e.evaluate() => now; > // send MIDI clock > } > > > From receiving MIDI clock messages from an external source, how should one > adjust the BPM in ChucK? > > MidiIn min; > MidiMsg msg; > > TimeSignature.common(120) @=> TimeSignature ts; > > while (min.recv(msg)) { > // if is clock … { > /* new BPM */ => ts.tempo; > } > } > > I would imagine I would want to window over the last n clock messages to > average? > > Thanks in advance, > > michael > _______________________________________________ > chuck-users mailing list > chuck-users@lists.cs.princeton.edu <mailto:chuck-users@lists.cs.princeton.edu> > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users > <https://lists.cs.princeton.edu/mailman/listinfo/chuck-users> > _______________________________________________ > chuck-users mailing list > chuck-users@lists.cs.princeton.edu > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users
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