Exchange tips and tricks for the Akai MPC4000
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By dudum Mon Mar 15, 2004 4:32 pm
<forgive me> i archived but didn't find anything readily on this subject.

i got a question : does anyone know a formula for figuring tempo (BPM) to BITS for sampling a LOOP?

i've started a list of the conversions so that when i record ANALOG i can just type in the number and don't have to fool with editing to get a sample to fit within the bar grouping. if anyone has a formula or working list that they wanna help with <thanks!>

these are the tempos i've been working in so far:

for 2 BARS

90 BPM = 235,000
99 BPM = 106,900
133BPM = 79,400

of course you can multiply as needed for added BARS.

hope that helps someone else out!

By Doctor Beat Mon Mar 15, 2004 6:16 pm
yo dudum, da MPC4K'll do the math 4 ya 8)
When ya go to sample Trim, instead of END, ya can change it to length, time or beat. If ya set it to beat, all ya gotta do's enter BPM and number of beats, like 8 beats for 2 bars, and bam! it's done. If ya change back to length, da 4K'll show ya samples, like 8 beats @ 90BPM = 235,199.
Last edited by Doctor Beat on Mon Mar 15, 2004 6:33 pm, edited 1 time in total.
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By dudum Mon Mar 15, 2004 6:31 pm
ah...thanks man!

this thing just keeps surprising me, ****the math!

thanks doc.
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By BeBop Mon Mar 15, 2004 9:58 pm
Check this site out too -

The Doctor may be able to do these things in his head (I assume he has a PHd in Funk)

But we mere mortals can use the old calculator


Time Stretching / Pitch Shifting
http://www.deepsound.net/calculs.html

If this link doesn't work, just search for Deepsound in the forums and someone will have it listed right.

Bop
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By dudum Tue Mar 16, 2004 2:26 pm
great site, thanks for the tip!
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By AWW_NAWW Tue Mar 16, 2004 5:11 pm
dudum wrote:ah...thanks man!

this thing just keeps surprising me, ****the math!

thanks doc.


never throw away what you learn that makes people lazy

this damn 4k has made me real lazy in the past couple of months I've had it.
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By dudum Tue Mar 16, 2004 5:43 pm
yeah, i'm starting to keep a little graph paper book around with timing so i can get a little more fluent with the programming. i play by ear so the numbers are a new thing for me, trying to teach myelf to doodle out a beat on graph and see how it translates.

i wanna keep at it cause drum and bass seems like it would be easier to write on paper and organize the changes how you need them.

thanks for all the input!

By Doctor Beat Tue Mar 16, 2004 9:13 pm
yo Bop, cool site! 8)
but what I'm sayin' is ya don't need no calculator 4 samples to BPM 'coz da 4K does it 4 ya.

By Altopiano Wed Mar 17, 2004 12:32 am
Great post!!! :shock: 8) :lol: