Pitch and BPM - TranceAddict Forums

TranceAddict Forums (www.tranceaddict.com/forums)
- DJ Booth
-- Pitch and BPM

Posted by DJ 2Slow on Oct-11-2003 23:35:

Pitch and BPM

Ok, well I've been trying to key up all my records, and start down the road of mixing harmonicly. An idea poped into my head today about also marking the BPM of the records too. The reason why I want to do this, is alot of the stuff I have varies between 133 bpm, all the way to 145 bpm, all trance, some hard, some soft. Well, when you adjust the pitch over 3 %, youll go up a step, or down a step, so the reason why Im noteing all my BPM's here is, I was wondering if there is a relation to pitch and BPM, in other words, Lets take PVD Another way, which is in A at 0 pitch and runs at 136 bpm, but I want to bring in something else thats in E at 0pitch and runs at 145bpm, basically, I want to know if there is a way of gauaging what my key is going to be when i bring that records pitch down to 136bpm, get what im saying? Well I hope so

Thanks in advance

2slow

Posted by Fast Turtle on Oct-11-2003 23:44:

A semitone is roughly a 6.5 % difference.

Good luck finding stuff that perfectly mixes harmonically...

Posted by JayKuE on Oct-12-2003 01:16:

key all ur tunes at one bpm?

Posted by DJ 2Slow on Oct-12-2003 03:19:

no, key the records at at 0 pitch, but figure out how pitch relates to BPM, for example, if i have a record that at 0 pitch is 136 BPM, and I move the pitch fader to 5.5 %, whats my BPM going to be? Im asking if there is a way to measure this, obviously you can do it with key, 6% on the pitch fader is one semitone, so I wonder what 6 % would do for BPM, know what Im sayin? If there is a way to do this, it would be nice, that way I can look at the records and figure out when I bring the record up a few bpm's how much my key is going to change.

2slow

Posted by futurevision on Oct-12-2003 03:53:

hi

i wrote a program about 2 years ago that does that

and there is a formula to this.

just got to find it..
if i do find it ill post it here 4u.

Rob

Posted by rxt on Oct-12-2003 04:14:

ummm

(BPM * pitch) + BPM = new BPM

if pitch is +8% then you would use .08

Posted by futurevision on Oct-13-2003 01:17:

quote:
Originally posted by rxt
ummm

(BPM * pitch) + BPM = new BPM

if pitch is +8% then you would use .08

yeh i guess thats right..

Posted by DJ 2Slow on Oct-13-2003 17:58:

yes, that formula is right, no i just need to find the formula that TTempoCalc uses, then its on...

thanks alot for posting it, hope it helps more people than just me

2slow