WAI to BPM?

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Feb 1, 2011 at 2:20 AM
cultr1
cultr1
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I am working on overlaying other instruments to organya songs, and finding the right tempo is a constant nuisance, because BPM is a direct function with f(x) being speed and x being BPM, while Pixel's WAI(t) units is an inverse function where f(x) is speed and x being WAI.

Since inverse functions are non-linear and direct functions are linear, I am assuming a quadratic equation is necessary for conversion.

I am on my phone ATM, so if someone could give me some WAI values and their exact correlating BPM values (three or four should suffice, they should relatively far apart), I could easily find a formula for converting the two.

Unless such a formula exists.
 
Feb 1, 2011 at 5:22 AM
Wedge of Cheese
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WAI = ms / click
BPM = beat / min
ms/click * click/beat * beat/min = ms/min = 60000
WAI * click/beat * BPM = 60000

So to find any one of the things on the left, simply take 60000 and divide by the product of the other two.
 
Feb 1, 2011 at 5:37 AM
cultr1
cultr1
Only Love, Maximum Love, Forever
"Life begins and ends with Nu."
Join Date: May 6, 2009
Location: somewhere new
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Age: 25
Wait what do you mean by WAI=ms/click
Ms is milliseconds I suppose, but what is meant by click?

Edit: using audio approximation technology (ears), I have ascertained that 60 WAI is approximately 250.5 BPM.
This gives me a result of (clicks/beat) being about 3.992.
Is clicks per beat the constant of variation?
Or does it change with each equation?
 
Feb 1, 2011 at 1:42 PM
Wedge of Cheese
Wedge of Cheese
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So, you were almost correct. WAI 60 = BPM 250 if the number of clicks per beat is 4, which is normally is.
 
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