That's pretty cool. There seems to be a very short delay between the beat and the visual change. Perhaps you need to introduce a delay in the (output) music to accommodate it?
On Oct 1, 2010, at 14:26:07, George Toledo wrote: > As a matter of fact, I made something not that long ago for just this > scenario. > > I am attaching the "beat engine" that I used to synchronize this: > http://vimeo.com/15191953 > > I'm using "square waves" so that a hard tick is generated on the counter, but > you can change wave types to generate the other kinds of envelopes that > should be familiar from synthesis via the LFO. > > > > > On Fri, Oct 1, 2010 at 4:50 PM, Rua Haszard Morris <[email protected]> wrote: > Hi list, > > I've been trying to animate in time with music by using LFOs running at bpm > related rates. The bpms tend to be 128/130ish so are not nicely related to > frame > rates (e.g. 120bpm would be!). > > I can't seem to get accurate sync between my audio (which is at a known tempo) > and the LFOs - the LFOs seem to drift. I think this is the accumulation of > rounding error over the course of the animation. > > I wrote a BPM-LFO plugin so as to avoid rounding issues, supplying tempo in > BPM > instead of period, and this LFO seems to drift just as much. > > Has anyone used LFOs for roughly bpm-accurate synched animation over the > course > of about 5 minutes? If anyone's succeeded I'd love to know how to do it! > > BTW my needs are reasonably modest - things like an image that flashes every > second beat over the course of a whole song - e.g. 64 times a minute, or a > billboard that slides into view every 16 bars (64 beats) - but the LFOs need > to > ensure these elements stay in phase with the audio beat. > > thanks > Rua HM. > -- > http://cartoonbeats.com > http://haszaristwocents.blogspot.com > http://myspace.com/haszari > http://last.fm/music/Haszari > > > > > _______________________________________________ > 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/gtoledo3%40gmail.com > > This email sent to [email protected] > > > > -- > George Toledo > [email protected] > www.georgetoledo.com > > The information contained in this E-mail and any attachments may be > confidential. > If you have received this E-mail in error, please notify us immediately by > telephone or return E-mail. > You should not use or disclose the contents of this E-mail or any of the > attachments for any purpose or to any persons. > > <Beat Engine_GT.qtz> _______________________________________________ > 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/rmann%40latencyzero.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]
