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FamiTracker > General > FamiTracker Talk > Tempo Question Owner: Orion96 New post
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Tempo Question Posted: 2013-02-04 00:37 Reply | Quote
Orion96

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#44042
How do you calculate the average BPM of 2 alternating tempos? I want to make a list of all the possible tempo combinations from highest to lowest, but the only way I can find the BPM is to let it play for a minute and count the beats.
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Who's going to dodge that? Nobody! Not the first time! You'd have to know: Oh! This is gonna be a vertical 2D shooter, and, there's going to be an obstacle immediately at the start of the game!
AVGN
Posted: 2013-02-04 00:54 Reply | Quote
cak

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#44043
60 / 120 = 0.5
60 / 150 = 0.4

average note length is 0.45

60 / 0.45 = 133.33 bpm
Posted: 2013-02-04 05:05 Reply | Quote
Orion96

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#44056
Thank you.
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Who's going to dodge that? Nobody! Not the first time! You'd have to know: Oh! This is gonna be a vertical 2D shooter, and, there's going to be an obstacle immediately at the start of the game!
AVGN
Posted: 2013-02-10 20:42 Reply | Quote
tripflag

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#44241
I would always divide 900 by the bpm I wanted, so for instance 138bpm would be 900/138=6.52 and you'd toggle between 6 and 7 to be p. damn close.

Keep in mind that you can also do intervals of three, so if you want 142bpm you'd do 7,6,6,7,6,6,7... since 900/142=6.338
Posted: 2013-02-10 22:59  (Last Edited: 2013-02-10 23:02) Reply | Quote
cak

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Location: oregon
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#44244
Oooh nice, it didn't occur to me to use frames as a numerator. Actually, if you know how many frames per quarter note, this formula will work:

3600 / frames per quarter note = tempo

Also, 3606 (or 901.5) is slightly closer to true NES framerate.
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