midi sequencing, tempo

[danondrums]

Here's the situation:

I'm recording a song for my band where the guitar has a vibrato/echo type of effect on it which dictates the tempo for that portion of the song.

My guitar player is using a Roland 303 multifex pedal to produce the effect (it is midi compatible) and I am recording to a Korg D1600 (also midi compatible).

The challenge is, the guitar effect is used only during the verses, and again at the bridge/solo section. All my other songs are recorded using a tempo map, and I would like to keep it that way for this one, too (we have had 'discussions' regarding tempo and time signature changes, thus the use of tempo mapping).

How do I intigrate a tempo map on the Korg with the effect on the Roland pedal so that the "click" is on with the vibrato/echo of the guitar effect? Midi, or just trial and error with selecting tempo rate for the mapping? Please help.

 

[FenderTL5]

Cakewalk has a feature that allows you to "tap" a tempo, but you're not using Cakewalk. Maybe the Korg has a similar feature?

Also, (DISCLAIMER) I've never tested this But there is a popular formula that says:

[Using the formula 60,000 divided by bpm of song equals the number of milliseconds delay time for a 1/4 note delay. Meaning, if the
tempo of your song is 120 divide 60,000 by 120 you will get 500 milliseconds. If you set your delay to 500 milliseconds you will have a
perfect 1/4 note delay in time with the tempo of your tune. Obviously to get the time of an 1/8th note divide the 500 milliseconds by half
(250 milliseconds equals an 1/8th note) and for a 1/16th note divide by 4 (125 milliseconds equals a 1/16th note).]

If this is indeed true, then the reverse would also be true (as I understand mathmatics) 60,000 divided by the (1/4 millisecond value) = bpm
If the delay is not on the quarters then adjust accordingly. You would have the delay time on the effects unit (or should)

Then of course there is trial and error..

 

[cordura21]

well, it depends how midi compatibe is it.
Check if your fx unit can get the delay time changed by a midi continuous controller. If that's so, then you can draw a delay time in your sequencer following the tempo map. The JStation does that thru controllers #55 y #56, wich is pretty handy.

Of course this is pretty picky, cause if you're doing small tempo changes then a little missalignement is not big deal.

You can download a delay calculator here:
http://www.analogx.com/files/delayci.exe

 

[danondrums]

Thanks for your input, guys. I'll give it a shot and let you know how it worked out.

Also, if there are any other ideas out there, or anybody familiar with the Korg d1600, please feel free to keep posting.

Thanks to all