CDJ BPM Calculator

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After reading the thread on jog wheels, and how at 140 bpm 1.7% will adjust the track by 1 BPM, I thought I'd knock something up for all you DJs.... no, it's not MissStix, neither Wicky nor Mr 5 would ever forgive me for that; I'm talking about...

<span style='font-size:21pt;line-height:100%'><span style='color:red'>The CDJ BPM Calculator </span></span>- for lazy bastards who can't tell whether the track in the cans is faster or slower than the one coming out of the PA.

Simply find the BPM of the track you want to mix down the left hand side, the difference between the two BPMs across the top, and where they meet is the % difference you dial up on the CDJ to get them in time. The rest is up to you - I assume you know what a crossfader is for, or do you want a graph for that too?

Percentages highlighted in yellow are exact; everything else has been rounded to two decimal places for Barclay and all the other CDJ1000 users.

Please let me know if you find any inaccuracies in this; I did it all by hand and there may be typos...
 
</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Red five @ Dec 12 2003, 08:05 PM)</td></tr><tr><td id='QUOTE'> and its every 0.7%

so 1bpm extra is 0.7% 2bpm would be 1.4% etc.. [/quote:72b2a0e981]
It's actually a tad more than 0.714% (my studio calculator only gives me 3 decimal places), 140 to 142 bpm it gives as 1.429%, which rounds up to 1.43%, so nyer to you too, Mr. I-Don't-Use-The-Crossfader-Cos-I-Don't-Know-How type.
 
anorak.jpg


:P
 
Allright, now that the cats out the bag...Ive won many a crate of beer in bets about beatmaching in under 5 sec. with incredulous DJs. Gotta find a new party trick...

Colin, my mac dont wanna read your doc... Im wondering why if the .7 thing is set for 140 bpm tunes it seems to work even when mixing 147 to 148 bpm tunes ie up by .7

Should it be .8 at that bpm? And I guess it really doesnt work with hiphop, mixing 90/100 bpm tunes, anyone tried? I guess math dont lie...
 
From 130 to 150 bpm, a 1 bpm difference is between 0.67% and 0.77%; with CDJ100s you only get 0.1% resolution so you'll still get away with mixing pretty much any 1 bpm-difference tracks at 0.7%. 147 to 148 is actually 0.68%...

As for slower tracks, the table I made only goes between 130bpm and 150 bpm... this is psy-forum after all, not hip-hop-forum... :P
 
Nice one Colin...maffs never was my strong point.

Why, with your table its only a matter of time before the first truly deaf DJ will steal your gigs cos theyll be a novelty act. Youre sabotaging your own career with your helpfulness! :P
 
Right, just to lay down some more science on you how about this:

When using the pure pitch control (as opposed to master tempo and all that newfangled-saddle-like-a-razorblade-stuff) - y'know, like wot vinyl djs do - you might be interested to learn that for a bpm change of 6% you are actually shifting the tune into the next key:

i.e. a tune in the key of C @ 140bpm when shifted to 148.4 bpm will, more or less playback in the key of C#, play it at 131.6 and its in the key of B.

Interesting eh?
 
:blink: :blink: :blink:

Think i'll stick to relying on my ears.
 
</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Colin OOOD @ Dec 12 2003, 08:17 PM)</td></tr><tr><td id='QUOTE'> </div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Red five @ Dec 12 2003, 08:05 PM)</td></tr><tr><td id='QUOTE'> and its every 0.7%

so 1bpm extra is 0.7% 2bpm would be 1.4% etc.. [/quote:854ac26e2a]
It's actually a tad more than 0.714% (my studio calculator only gives me 3 decimal places), 140 to 142 bpm it gives as 1.429%, which rounds up to 1.43%, so nyer to you too, Mr. I-Don't-Use-The-Crossfader-Cos-I-Don't-Know-How type. [/quote:854ac26e2a]
i can use both, i'm just that type-a-guy.

...and fuck it as long as it dont sound like a bag of spoons falling down the stairs then cool...
 
</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Colin OOOD @ Dec 12 2003, 08:00 PM)</td></tr><tr><td id='QUOTE'> I thought I'd knock something up for all you DJs.... no, it's not MissStix,
[/quote:2c26be88dc]
Mr OOOD!!! :o

I've only got 2 's' in my name.. shame on you :no:
 
</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (MisStix @ Dec 13 2003, 12:25 AM)</td></tr><tr><td id='QUOTE'> </div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Colin OOOD @ Dec 12 2003, 08:00 PM)</td></tr><tr><td id='QUOTE'> I thought I'd knock something up for all you DJs.... no, it's not MissStix,
[/quote:996071fecf]
Mr OOOD!!! :o

I've only got 2 's' in my name.. shame on you :no: [/quote:996071fecf]
Sori, speling wuz neva mi storng pont.
 
Hey are you trying to put all the people who can mix out of a job...
It took me bloddy years of listening to messed up double beats to perfect me mixing skills. And there you are handing out on a plate for the yoof of today...
Ah well the yoof of today probably can't read or understand "numbers" and "maths" so we are probably safe for a while, phew that was close...
 
DJ ITEM 82991: CROSSFADER

A DJ, very similar in respect to the Star Wars Icon DARTHFADER but quite often slides into a very bad mood.

;)
 
Simply find the BPM of the track you want to mix down the left hand side, the difference between the two BPMs across the top, and where they meet is the % difference you dial up on the CDJ to get them in time
Click to expand...

gah get some skills people!!! .. this kinda shit makes me wonder what the worlds coming too :|

Ive won many a crate of beer in bets about beatmaching in under 5 sec. with incredulous DJs. Gotta find a new party trick...
Click to expand...

I'll see your under 5sec and raise you under 2s (with vinyl and no headphones) :] ...if you wanna a new trick see if you can fit 99 tunes on a 70min mix :)

peace,
Marc
 
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