[PD] [r pd-dsp-started] was: Re: samplerate~

[Christof Ressi]

> If DSP is on, you get a bang. If it's off, you won't.
Yes, that's pretty much expected, I guess. After all, it's not 
[savebang] ;-)
> Perhaps [r pd-dsp-started] should only send bangs when dsp starts or 
> stops, and not when the dsp graph is redrawn. 
When the DSP graph gets rebuilt, DSP *does* stop and start (again).
> even though I do understand that, for a tiny moment, the dsp needs to 
> be off behind the scenes
It doesn't matter how much time passes between stopping and starting 
DSP, the point is that the DSP graph has or might have changed and 
"pd-dsp-started" will report it.

> If, say, you want to send one and only one bang to [switch~] so as to 
> graph tables when DSP starts
What do you consider a "real" start of DSP?

Actually, I'm rather asking myself whether it's necessary that saving 
triggers a rebuilt of the DSP graph...

Christof

On 18.02.2020 23:57, ffdd cchh wrote:
> It depends.
> If DSP is on, you get a bang. If it's off, you won't.
>
> So, If I am expecting a bang because I saved and DSP is off, it just 
> bugs me that no bang is sent :)
>
> If, say, you want to send one and only one bang to [switch~] so as to 
> graph tables when DSP starts, then [r pd-dsp-started] is only useful 
> if you spigot-out future bangs/saves/etc, otherwise you are graphing 
> tables on every save...
>
> It's a feature if you use it for randomness, say, to randomize seeds 
> according to when dsp on/off switching or graph redrawing falls, say 
> linked with a [timer] object :)
>
> Perhaps [r pd-dsp-started] should only send bangs when dsp starts or 
> stops, and not when the dsp graph is redrawn.
>
> In any case, I think it's the misnomer what's confusing me. I realize 
> that saving redraws the dsp graph, but I don't see why the dsp would 
> "start" if it was already switched "on", even though I do understand 
> that, for a tiny moment, the dsp needs to be off behind the scenes.
>
>
> On Tue, Feb 18, 2020 at 5:30 PM IOhannes m zmölnig <zmoelnig at iem.at 
> <mailto:zmoelnig at iem.at>> wrote:
>
>     On 2/18/20 10:21 PM, ffdd cchh wrote:
>     > The bug/feature with [r pd-dsp-started] is that you'll get a bang
>     > every time you save the patch,
>
>
>     it's neither a bug nor a feature.
>     the DSP-graph is re-built when the patch is saved, and so the
>     "pd-dsp-started" is emitted.
>
>     > so it's not very useful while patching
>
>     how so?
>
>     (a [metro] will also send bangs while patching, and yet it is
>     useful in
>     live-coding contexts.)
>
>     gmsdtr
>     IOhannes
>
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