Dseq, Dser and Demand - unexpected behaviour on bela

[miguel-negrao]

Environment

• SuperCollider version: commit cee2becc757a92f4b79799111076fc843b2ce2c2 (HEAD, tag: Version-3.10.0-beta1)

Steps to reproduce

(
x = { |numSteps = 2|
    var seq = Dseq(Dser(8.collect{ |i| 400 * i }, numSteps), inf);
    var freq = Demand.kr(Impulse.kr(4), 0, seq);
    SinOsc.ar(freq) * 0.1;
}.play
)

x.set(\numSteps, 4)

Expected vs. actual behavior

I'm getting unexpected behaviour on bela:

Running this on my computer (debian 10, with commit above) it plays continuously and changing numSteps increases or decreases the sequence size. Running the same code on the bela only runs the sequence once. My bela has supercollider version scsynth 3.10.0-beta1 (Built from branch 'HEAD' [1378ce7b8]) and tested on my computer on commit cee2becc757a92f4b79799111076fc843b2ce2c2 (HEAD, tag: Version-3.10.0-beta1).

Let me know if I should move this issue to the SuperCollider repo.

[miguel-negrao]

doing freq.poll bela ide prints:

UGen(OutputProxy): 0
UGen(OutputProxy): 0
UGen(OutputProxy): 0
UGen(OutputProxy): 400
UGen(OutputProxy): 400
UGen(OutputProxy): nan
UGen(OutputProxy): nan
UGen(OutputProxy): nan
UGen(OutputProxy): nan
UGen(OutputProxy): nan
UGen(OutputProxy): nan

[giuliomoro]

no idea, but can you try it against the latest and greatest Bela release? https://github.com/BelaPlatform/supercollider/releases/

[miguel-negrao]

Updating to latest and greatest has fixed it !

[giuliomoro]

That's great!