[chuck-users] Efficient analysis & resynthesis for game audio

[Mario Buoninfante]

Hi Jack,

That's super interesting, especially the bit about global variables.
How's that suppose to work? I don't seem to be able to make it work on
ChucK 1.4.0.0 . Just tried on MacOS High Sierra 10.13.6 .

Cheers,
Mario

On Fri, 1 May 2020 at 15:34, Jack Atherton <lja at ccrma.stanford.edu> wrote:

> Hello!
>
> There's documentation for the Unity embedding here:
> http://chuck.stanford.edu/chunity/
> Compared to Heavy, your ChucK code is compiled at runtime, so you can even
> assemble ChucK scripts on the fly with string manipulation while your game
> is currently running.
>
> If you're looking to embed ChucK in another program, you will want to use
> the ChucK class in the core/chuck.cpp file as the interface. You will need
> to include all of the core/ files and none of the host/ files. The changes
> we made to ChucK involved separating its core logic (most of it) from its
> host -- command line and RtAudio interface, as well as reducing its
> dependencies on global variables so that multiple ChucK VM instances can
> coexist.
>
> Then, there's also the new "global" variables in ChucK. If you add the
> global keyword to a variable, it's accessible by name across the entire VM
> (ChucK instance), and can also be set and gotten from outside ChucK (e.g.
> from Unity).
>
> ~Jack
>
> On Fri, May 1, 2020 at 5:01 AM S. Elliot Perez <s.elliot.perez at gmail.com>
> wrote:
>
>> Hello!
>>
>> I've been using Pure Data and the Heavy compiler (hvcc) to make
>> procedural audio for games/interactive media pieces the last couple of
>> years. I just started going through the videos of the Kadenze course. The
>> first couple of lessons, I did what Mr. Cook was doing in his ChucK
>> software using Pure Data... but then I got to Session 3 where he showcases
>> a method of resynthesis using two scripts- one to analyze a sound file and
>> output a list of peaks (frequency and amplitude), and one to perform the
>> resynthesis. I was very impressed with how quickly this goes as you can
>> just copy and paste the list from the 1st list into the 2nd one and you
>> already have a working model which you can then begin to tweak. With Pure
>> Data, this would be an exponentially more arduous process of manually
>> looking at a spectral analysis, filling out boxes, connecting them with
>> wires, copying & pasting for each frequency...
>>
>> I'm curious as to what the possibilities of integrating these ChucK
>> algorithms into standard programming languages like C++/C# for use in game
>> engines. On the download page of ChuCK it says that the newest versions are
>> made to be embedded in other systems. Is there documentation detailing this
>> somewhere?
>>
>> --
>>
>>
>> *Ｓ・エリオット・ペレスwww.selliotp.com <http://www.selliotp.com>*Sound Designer for
>> * enenインタラクティブサウンドディザイン*
>> [image: http://enengame.com/] <https://youtu.be/xYpc9agfil8>
>> *「エンエン」は日本のAppStoreでリリースされました！*
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