milliseconds to bpm formula

    Feb 25 2010 | 5:58 am
    i can only find bpm to milliseconds and i dont remember how to switch around algebraic equasions that have 2 variables.
    this is what someone said in a forum:
    y = (240,000 * (d / t)) / x
    where t is the divisions of a bar (e.g. 16)
    and d is the delay time (e.g. 3)
    and x is the bpm of your song
    y is the delay time in milliseconds
    so what would it look like the other way around please.

    • Feb 25 2010 | 6:47 am
      that formula converted would be x = (240,000 * (d/t)) * y i think but i've never seen that formula before for bpm to ms. the bpm to ms formula i use is [expr 60000./$f1] and it's the same for ms to bpm.
    • Feb 25 2010 | 8:33 pm
      thanks, i had devised (1000/milliseconds)*60 = bpm but that yields slightly less accurate results than your method once i divide the result by 16 or something.
    • Feb 26 2010 | 8:47 am
      (1000. / milliseconds) * 60. ---use all floats for better precision, even if your msec is originally in ints. Same for dividing afterward if you do that.
      Also note that sending a float to an int will truncate, not round it. use [round] if needed.