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guestscripter

BPM Analyser

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I got the idea for this this morning and like how it turned out:

#Include <Misc.au3>
#Include <Array.au3>

$iTunesApp = ObjCreate("iTunes.Application")

HotKeySet("b","_Display")
HotKeySet("{SPACE}","_Beat")
HotKeySet("{ESC}","_Quit")
HotKeySet("{F3}","_Pause")

Dim $beat[4]
$time = TimerInit()
$pressed = 0
$paused = 0

While 1
    $i = 0
    Do
        Do
            Sleep(500)
        Until $pressed = 1
        $pressed = 0
        $i = $i + 1
    Until $i = 4
WEnd


Func _Beat()
    SplashOff()
    _ArrayPush($beat,TimerDiff($time))
    $pressed = 1
    ConsoleWrite($i)
    $beat3 = $beat[3] - $beat[2]
    $beat2 = $beat[2] - $beat[1]
    $beat1 = $beat[1] - $beat[0]
    $total = $beat1 + $beat2 + $beat3
    $average = $total / 3000
    $final = 60 / $average
    $final = Round($final + 0.5,0)
    SplashTextOn("BPM Tapper",$final & " Beats Per Minute",200,30)
EndFunc

Func _Quit()
    Exit
EndFunc

Func _Pause()
    If $paused = 0 Then
        $paused = 1
    Else
        $paused = 0
    EndIf
    HotKeySet("b")
    HotKeySet("{SPACE}")
    HotKeySet("{ESC}")
    SplashOff()
    While $paused = 1
        Sleep(500)
    WEnd
    HotKeySet("b","_Display")
    HotKeySet("{SPACE}","_Beat")
    HotKeySet("{ESC}","_Quit")
    $pressed = 1
    $i = 4
    ReDim $beat[4]
    $time = TimerInit()
EndFunc

Func _Display()
    SplashOff()
    $beat[3] = $beat[3] - $beat[2]
    $beat[2] = $beat[2] - $beat[1]
    $beat[1] = $beat[1] - $beat[0]
    $total = $beat[1] + $beat[2] + $beat[3]
    $average = $total / 3000
    $final = 60 / $average
    $final = Round($final + 0.5,0)
    MsgBox(0,"Final BPM",$final & "bpm")
    $iTunesApp.CurrentTrack.BPM = $final
    $pressed = 1
    $i = 6
    ReDim $beat[4]
    $time = TimerInit()
EndFunc

What you do is start up the script, play a song file (at the moment it's set up for itunes but that's just one line of code - easily changed), and then tap your space bar to the beat until you think you've done it steadily at least 4 times. The script then works out the beats per minute from those taps and puts it into the song data in iTunes.

It's useful for me cos i do a bit of DJ'ing.

Please let me know if you like it.

I don't use GUI's cos i don't know how but if somebody redid this using GUI's that would be awesome.

P.S. I was initially hoping to be able to tap out the beat on my mouse pad, bt HotKeySet doesn't recognize mouse presses and when I tried to use IsPressed it didn't really work the way I wanted. Any ideas anyone?

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