Here’s a really useful formula for calculating where your cue marker is. After writing some music 2 days ago, and leaving the play button on, I wondered just how far to the right my cue marker was… so:
speed = 145 bpm
145 bpm / 4 beats/bar = 36.25 bars/min
1 bar = 58 pixels (at current zoom level)
58 px/bar * 36.25 bars/min= 2102.5 px/min
screen resolution = 72 dpi
2102.5 px/min / 72 dpi = 29.2 inch/min
inch to cm convertion = 2.54 cm/inch
29.2 inch/min * 2.54 cm/inch = 74.17 cm/min
time = 2 days = 2880 min
distance = speed * time = 74.17 * 2880 = 213,609.6 cm = 2.13 km
My cue point is 2.13 km off to the right… hope no one runs into it.
So here’s a handy formula for when you need to work this out
distance in km = bpm / (beats/bar) * (pixels/bar) / dpi * (cm/inch) * time / (cm/km)
If someone feels like it, I would like to know the formula for the following situation: If a Vinyl record is infinitely large, and you are playing it backwards from the end of the record on a turntable with a infinitely long telescopic arm, how far from the centre is the needle at time x. That would be a very useful formula too!
Why, infinite of course.