Re: [chuck-users] coordinating rhythmic timing with unpredictable OSC events

Hi There, Graham Coleman had this awesome class called TimeGrid… anyone know where that's located anymore? I might be able to dig it up this weekend. It encapsulated a lot of this kind of quantizing functionality in a neat way. -Mike http://michaelclemow.com http://semiotech.org On Thu, May 3, 2012 at 12:34 PM, [chriswicks] wrote:

All 3 replies were spot-on, thanks very much. Tom Lieber, your suggestion works perfectly for my application, verbatim. Thanks guys, this list is fantastic! Loving ChucK.

-crwicks

------------------------------ *From:* Tom Lieber *To:* [chriswicks] ; ChucK Users Mailing List < chuck-users@lists.cs.princeton.edu> *Sent:* Thursday, May 3, 2012 11:08 AM *Subject:* Re: [chuck-users] coordinating rhythmic timing with unpredictable OSC events

On Thu, May 3, 2012 at 10:54 AM, [chriswicks] wrote:

...

Hello all! I'm quite new to ChucK, and I have a question concerning rhythmic timing. I've got a program that I'm working on that accepts OSC events being sent from a C++ application. Now, the program chugs along, it's quite rhytmic, and I'd like to trigger melodic shreds based on values sent through OSC. No problem doing that. My problem comes from the fact that the C++ app isn't in sync with the ChucK VM, so the times at which it chooses to send data are pretty much never in sync with everything else that's going on, so the melodic shred is triggered but is not lined up rhythmically with everything else that's going on.

Is there any way to hack it so that it waits to add the shred until it's lined up with everything else (quantized, so to speak). I'm not sure if I'm properly expressing the problem, so let me know if there's some way I can further clarify.

Simplest way is to prepend your shreds with synchronization code like this:

second / 2 => dur beat; beat - (now % beat) => now;

If your tempo varies, you might need an object that sends 'beat' events and you could wait to receive one of those at the start of the shred instead.

-- Tom Lieber http://AllTom.com/ http://infinite-sketchpad.com/

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