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Avg BPM stretch with 8% Pitch...10%...50%


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What do you guys see the BPM range differnces is on different tables with different pitch.

 

For ex.

 

If you have a 95 BPM record playing a 0% what BPM can we get to pitched all the way up and all the way down?

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Surely the BPM stretch is relative to the true BPM of the song. Speeding up a 90bpm song by 1% would lead to a smaller overall increase in bpm than say a 110bpm song with a 1% pitch increase.

 

So, in conclusion, I'm not sure what you're getting at! Can you explain what you mean a bit more thoroughly dood?

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A +8 pitch adjustment on a turntable increases the speed of the platter rotation by 8 revolutions per minute.

 

So..........if your table is set to 45 at 0 and the BPM of the tune is 95 and you were to set the pitch adjustment to +8 the increase in BPM would be worked out as follows:

 

(bpm) / (rpm) * (pitch increase)

 

95 / 45 * 8 = 16.888888888888888888888888888889

 

So, the BPM of the tune played at +8 is 111.88888888888888888888888888889

 

I take it that this is what you're getting at Gabe?

 

pz

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A +8 pitch adjustment on a turntable increases the speed of the platter rotation by 8 revolutions per minute.

 

Not true. that would only be true if your turntable turned at 100rpm at 0% pitch. it speeds it up by 8% of 33.3rpm or 8%of 45rpm.

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Not a trick question really. Just wondering how everybody understands and applies the bpm to pitch translation. Helps me and other people underatand better.

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The pitch control does not work on an RPM basis - it is purely a % increase in speed. So a 95BPM tune at +8% is therefore running at 95*1.08=102.6 BPM.

 

word - not that tricky.

 

the easiest example would be a record with 100 bpm at pitch +/- 0%. so this record will run on 92 bpm at pitch -8% and on 108 bpm at + 8%;

 

so a record with 50 bpm at pitch +/- 0% would be running on 46 bpm at pitch -8% and on 54 at pitch +8% etc...

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i aint gonna figure out 8 or 10% pitch adjustment...

but i always figured a 100 bpm record bumped up 50% speed wise

will equal 200 bpm.

a 100 bpm track pitched down 50% should kick the track at 50 bpm.

50% +/- speed adjustment doubles or halves the bpm.

and all should be able to be mixed together.

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i aint gonna figure out 8 or 10% pitch adjustment...

but i always figured a 100 bpm record bumped up 50% speed wise

will equal 200 bpm.

nope, it would be 150bpm

 

a 100 bpm track pitched down 50% should kick the track at 50 bpm.
yes

 

50% +/- speed adjustment doubles or halves the bpm.

no it adds or subtracts half of the original bpm

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heres the equations to work out how much shift you need

 

Record1 = a

Record2 = b

 

(b-a)/a *100

 

so if you had record1 at 80bpm and record 2 at 75bpm

 

(70-80)/80*100

= -6.25%

 

so if record a was already at +4% you would have to move record b pitch down to -2.25%

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right i got bored and made a lovely excel spread sheet for you who still dont know whats going on!

 

http://www.sendspace.com/file/8skavc

 

put the bpm of your first record in the first box and then your pitch range (put 8 in this box if your on technics) then it will calculate the max and min bpm you can get. then on track 2 side put in the bpm of the track your gonna mix and it should calculate how much you have to adjust the pitch.

 

fin

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