To calculate pitch you would need to sample the audio stream at a rate much higher than QC's frame-rate, so this would have to be done in a custom plugin.
I started on a plugin once to reads audio input for a similar use. Give a shout if that code would be of any use to you. Cheers, Tom On 17 Mar 2010, at 17:06, Dan Winckler wrote: > Hi folks, > > I have been struggling to set up meaningful pitch-tracking in QC, e.g., take > a relatively clean audio signal from a solo instrument and map its pitch, > roughly, to an arbitrary range (0 to 1). I have tried various approaches > with QC's built-in audio patches, Kineme's audio tools, and a variety of > Javascript patches (get a mean from an array of values, etc). No dice. If > any of you have any suggestions as to how to do this, I would be glad to hear > them. > > Diagrammatic Visual Aid for Elucidation of the Subject in Question: > > [ audio input ] --> [ ???? ] --> [ 0 to 1 ] --> [ the color of a sprite, > yay! woohoo! ] > > thanks, > cheers, > dan > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Quartzcomposer-dev mailing list ([email protected]) > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/quartzcomposer-dev/bangnoise%40gmail.com > > This email sent to [email protected] _______________________________________________ Do not post admin requests to the list. They will be ignored. Quartzcomposer-dev mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/quartzcomposer-dev/archive%40mail-archive.com This email sent to [email protected]
