How do I create a circle pan?

[werzel]

I recently watched a video on the Brauer Motion plugin and was toying with the idea in MXXX and came upon one of my daily Melda stumbling points. Perhaps someone can help.
Simply using the Volume & Panorama module, I set the Panorama Law to +12dB to get the widest/ most separation possible.
I then set a Multiparamter to control the Volume from -12dB to 0.
And another to control the Panning from 100% Left to 100% right.
If I use a MOD to move them both, they either become free running from one another or synced.
Is there a method that I can use to lock 1/2 the sync rate of the Volume to the Panning?
I (think) I'm looking for (-6dB @ 100% Left, 0dB @ Center, -6dB @ 100% Right, -12dB @ Center) loopable.
It would be interesting to be able to set multiple sync points when modulating multiple parameters.
Any help would be appreciated.

[DarkStar]

Banks mode, with interpolation?

[werzel]

Spot on, DarkStar!
I'd never tried them before. Now I've got to pretend to suss the Haas effect and add delay to the equation. Then filtering.

[dmbaer]

Is there a method that I can use to lock 1/2 the sync rate of the Volume to the Panning?

You're making this overly complicated. I started to develop something similar but got hung up on a needed feature that was eventually introduced - but I never found time to return to the project (MSF came along!!!).

You just need one modulator, running at the speed of the revolution. You need a ramp waveform and *importantly* you need to turn on the feature that does an immediate switch from +1 to -1 (that was the missing feature that my project got stopped at).

For position and volume, supply transform curves. You remember high school geometry equations, right?

For bonus points, figure out how to introduce Doppler pitch shifting. That gets a bit dicier since to do it right, you'd really need some fairly detailed run-time computations that take size, rotational speed and distance from the object into account. But you might be able to get by with just a "large", "medium" and "small" model - the listener is not likely to be able to tell the difference.

[werzel]

Hah! Of course I'm making things over complicated, I'm the one that boils water to make toast! (Its a timing thing.)
Wonder how lopsided my circle will be to account for my left ear's hearing loss.
Thanks for the input...I hadn't thought about adding pitch to the equation, I was just going to smear a bit with filtering.