Variable for Rest

Questions
1

hello!

I am a little confused about how I would sequence Rest times for \dur in pbind? Or in that case any pbind argument?

I get the error
ERROR: Primitive ‘_Event_Delta’ failed.

When I want to do something like this-
\dur, ,Pseq([0.2,Rest(Pseq([0.3,0.01],inf).asStream)],inf),

same result if I get rid of .asStream

Thanks!

2

Hi,

you could write

(
Pbind(
	\dur, Pseq([0.2, Prand([0.3, 0.1]).collect(Rest(_)) ], inf),
	\note, Prand((1..10), inf)
).play
)

which is short for

(
Pbind(
	\dur, Pseq([0.2, Prand([0.3, 0.1]).collect { |x| Rest(x) } ], inf),
	\note, Prand((1..10), inf)
).play
)

If you think that this is clumsy - I agree, you’d be not the first one. See this thread:

https://scsynth.org/t/pbind-and-samples-with-different-durations-2

IMO something like Pattern.rest or Pattern.asRest should exist, but there is no consensus on that. You could also take James’ suggestion Prest from there.

3

This has come up often enough that I’m willing (after the dust settles from a few things at work) to make this my first RFC.

See this thread:

https://scsynth.org/t/pbind-and-samples-with-different-durations-2

IMO something like Pattern.rest or Pattern.asRest should exist, but there is no consensus on that. You could also take James’ suggestion Prest from there.

chuckle I just reread that thread… I don’t have a lot to add to it, and tbh, my opinion hasn’t changed very much.

  • In pattern-land, the baseline way to modify patterns’ results is a filter pattern: Pfin, Pcollect etc.

  • EDIT deleted one point because it wasn’t true.

  • I’d also argue that reading the code out loud doesn’t work very well for a rest method. pattern.collect(func) reads as “I have these values, and I want this operation to be done for them.” pattern.rest reads as “I have these values, and… oh, by the way, I want them to be rests.” The latter strikes me as awkward, where the former does not.

  • Last, I now think Prest should have a count argument (like Pfin) instead of a probability, default = 1. It seems to me that the typical case is to interlace a single rest in the middle of some other sequence. (Unless you’re John Cage, you never want an infinite stream of rests.) Tendency masking should be done by another class.

hjh

4

Thanks so much! This really helpful.

5

I also very much appreciate this!

6

Submitted: https://github.com/supercollider/rfcs/pull/4

hjh

1 Like
7

Thanks for this initiative, James !