[chuck-users] Why is my code doing this?

[Forrest Cahoon]

Thanks, Joel and JT! I got my Additive object working as a Chubgraph,
exactly like I wanted.

Interestingly, I thought I'd have to connect my Additive object's signal
chain before i called init(), but afterwards also seems to work just fine.

Revised code is at
https://gist.github.com/forrcaho/21acdb25e05a8620f56dba591cd52ed5 in case
anyone is interested.

On Thu, Jan 3, 2019 at 10:08 PM JP Yépez <jpyepezimc at gmail.com> wrote:

> Hey Forrest,
>
> Haven't really had a chance to take a closer look at the code, but from
> your description, I think Chubgraphs might be able to help you out with
> this. If you haven't tried them out, Chubgraphs have a built-in outlet, and
> if you connect all AdditivePartials to it, you should be able to simply
> connect/disconnect the Additive instance, which takes care of all the
> partials. Here's a bit of useful info on them:
>
> http://chuck.stanford.edu/extend/#chubgraphs
>
> Chubgraphs are a good way to create your own flexible classes that can be
> part of audio chains, so maybe this is something like what you have in mind?
>
> Hope it helps!
>
> JP
>
> On 4/01/2019, at 4:44 PM, Forrest Cahoon <forrest.cahoon at gmail.com> wrote:
>
> Thanks! This was totally evading me.
>
> So even though I haven't called b.play(), its AdditivePartials will make
> sound when time advances -- that's what I was missing.
> Another option that works is to set the gain of each partial to 0 in init
> and at the end of play().
>
> What I would really like is be able to write these classes in some way
> that I can connect the signal chain using the Additive object, like
>
> Additive a => NRev r => dac;
>
> which would somehow call a method on a to hook up the signal chain to all
> the partials behind the scenes. Is that at all possible?
> Or failing that, some other way I can specify the signal chain for
> individual Additive objects outside the class (e.g. a connectSignal()
> method)?
>
> Forrest
>
>
>
> On Thu, Jan 3, 2019 at 1:30 AM Joel Matthys <jwmatthys at gmail.com> wrote:
>
>> Hey Forrest.
>>
>> I messed around for a long time with your code before it finally struck
>> me:
>>
>> You connected your AdditivePartials to the dac too soon!
>>
>> In your code you connect this=>dac when the AdditivePartials are
>> instantiated, but you don't set gain and freq until you spork~ play.
>>
>> So when you pass the first 0.5::second => now, Additive b is sounding at
>> full gain on default settings.
>>
>> If you move this => dac from the init function to the top of the play
>> function, all is well. You should probably add this =< dac at the end of
>> your play function too.
>>
>> Joel
>>
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>> On Jan 2 2019, at 10:02 pm, Forrest Cahoon <forrest.cahoon at gmail.com>
>> wrote:
>>
>> Sorry, I tried to come up with a more hello-world example of the problem
>> I'm experiencing, but I really don't know what's going on so I have to post
>> something a bit complex.
>>
>> My ChucK code is here:
>> https://gist.github.com/forrcaho/21acdb25e05a8620f56dba591cd52ed5
>> <https://link.getmailspring.com/link/1546499923.local-a2481a69-52f7-v1.5.4-1d923cf4@getmailspring.com/1?redirect=https%3A%2F%2Fgist.github.com%2Fforrcaho%2F21acdb25e05a8620f56dba591cd52ed5&recipient=Y2h1Y2stdXNlcnNAbGlzdHMuY3MucHJpbmNldG9uLmVkdQ%3D%3D>
>>
>> I have a class called AdditivePartial and one called Additive which
>> contains an array of AdditivePartial objects.
>>
>> The Additive objects play method sporks the play method for all its
>> partials.
>>
>> The first Additive object I create appears to ignore the noteAmplitude I
>> have set; it is pegged and clipping. That is, until the second Additive
>> object is sporked, at which point the first object suddenly "remembers"
>> it's noteAmplitude.
>>
>> I've looked at the output in Sonic Visualiser and that confirmed this is
>> what's happening, at least on my linux machine.
>>
>> Can anyone reproduce this behavior, or does it work for you? If you can
>> reproduce it, what the heck is going on?
>>
>> Forrest
>>
>>
>>
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