Keeping things in tune:Tempo percentage vs. Pitch percentage

I sample records and use keyboards. Sometimes this can create pitch problems. Is there a way to figure out how tempo/pitch adjustment on my turntable correlates to semitones and cents of pitch correction?
For instance what tempo percentage of pitch correction(turntable) is used to drop down one semitone of true pitch?

I'll try to re-write the question so it makes more sense.
If my turntable is spinning at 33.3 rpm and I change the rpm speed by say -2.4%, what percentage will it change the pitch?

if your using a sampler why would you adjust the pitch on the table??

for various reasons..
1. the pitch control on the turntable gives you more of a controlled feel, but the pecentage does not really tell what semi-tones especially when you dont even know that key its in in the first place.

2. You can save bucket loads of memory if u sample it in the MPC real fast, you loose a little quality when slowig it down back in the MPC using TUNE but depending how fast u did sometimes its not noticable.

The faster the Sample, the shorter the WAV data,. then it dont take so much space.

3. you can already play your drum beat with the turntable playing and then adjust the timing on both till you get it right before sampling it in the MPC that way u dont have to fiddle with it when u put it in unless u cut it up but then getting the speed first helps anyway.

nuff more reasons but I cant type em all

Right Pen,
So I am slowing down or speeding records up to get the sample vibe right while I'm working on snips but it may not sound in tune after I get the correct length/timing. At this point I want to tune the sample back up to it's original frequencies or some other variation but I am interested in doing this more scientifically in the MPC so I don't have to guess when I'm tuning inside edit mode.

Ol'Sparky wrote:I sample records and use keyboards. Sometimes this can create pitch problems. Is there a way to figure out how tempo/pitch adjustment on my turntable correlates to semitones and cents of pitch correction?
For instance what tempo percentage of pitch correction(turntable) is used to drop down one semitone of true pitch?

that happens to me...i dont use a sampler but it when ever you sample it happens i guess..

when i try to play with the sample its always out of tune and sounds way out of place. I guess just mess around and find the key...

What I heard on another board is that +- 6% on the turntable equals +- 1 semitone.

yeah. its aslo 10 pts in the mpc that does that too. what i would do is find the pitch u want then use timestretch to make it the bpms u want while retaing the pitch.

binger0 wrote:yeah. its aslo 10 pts in the mpc that does that too. what i would do is find the pitch u want then use timestretch to make it the bpms u want while retaing the pitch.

aha! thats how u do it. hmhm i got some breaks that sound so much better in there original key but they too damn slow!
thanks man!

Penfold wrote:

binger0 wrote:yeah. its aslo 10 pts in the mpc that does that too. what i would do is find the pitch u want then use timestretch to make it the bpms u want while retaing the pitch.

aha! thats how u do it. hmhm i got some breaks that sound so much better in there original key but they too damn slow!
thanks man!

lol...........^^^Yo check ur PM's.

When you sample from the record, sample at the original rpm (33/45). Now, when you tune the sample lets say, one semitone, you should be able to do the same with your keyboard without either being out of key. Reason being, the original sample when not tuned at all, will be in the same key (in most cases, depends on the song/artist) as your piano program/ keyboard. so tuning both the keyboard and sampler the same amount should keep everything in key. This will be different when using more than one sample, from different sources. Im not sure what sampler you are using, but i use the pitch shift function a lot (in my 4000). I tune my samples to fit within a certian bpm/measure, and when done, pitch shift the sample in the oppisite direction (+/-) with the same amount i used to tune it. (+3.36 to fit should be pitch shifted -3.36 to regain the original tune) Works like a charm.

binger0 wrote:yeah. its aslo 10 pts in the mpc that does that too. what i would do is find the pitch u want then use timestretch to make it the bpms u want while retaing the pitch.

Ok thanks man. Hey I listened to a bunch of your beats and they sound tight keep up the good work. I think I get a lot of my inspiration from similar sources. Question: are you making those drums patterns yourself, sampling breaks, or both? Also are you making any flow from your beats?

i cut up break beats so i can program the whole beat. i never use looped breaks though they all one shots. its all bout how u chop and quantize. Right now im not sellin beats casue im too lazy and the area sucks for hip hop. I just make em for fun.

Ol'Sparky wrote:What I heard on another board is that +- 6% on the turntable equals +- 1 semitone.

I'll give that a try soon. I ussually just do it by ear now, but it would be nice to know exactly.

Oh, and i use Waves SoundShifter to bring it back in tune because i dump my chopped samples into a sofware sampler that has no timestretch.

damn,

i was at amoeba in hollywood, and they had a record that supposedly broke it down for you, they showed a BPM@0 on the pitch control and then showed the + or - for the bpms according to the pitch control fader...
damm, maybe i shoulda copped one!