]]>
Statistics: Posted by moody33 — 26 Nov 2008, 13:40
]]>
From KVR:
semitones -> bpm scaling
1 -> 1.059463094
2 -> 1.122462048
3 -> 1.189207115
4 -> 1.25992105
5 -> 1.334839854
6 -> 1.414213562
7 -> 1.498307077
8 -> 1.587401052
9 -> 1.681792831
10-> 1.781797436
11-> 1.887748625
12-> 2
Formula: Y = X * exp(Z * ln(2)/12).
Y=new tempo, X= old tempo, Z=semi-tones
If the lenght of your sample change, it's time-stretching, not pitch-shifting...I suppose you just want to change the pitch.
How will you change the pitch in your patch? Because , i've made a little patch about the correlation between lenght and tempo. It's in the synchro and time tools add-ons.
Statistics: Posted by ethnix73 — 26 Nov 2008, 02:16
]]>
Maybe the formulas are something like:
New Length = Original length X 2^(Pitch Shift/(-12))
where Pitch shift is a value in semitones and ^ means "power"
and
New BPM = Original BPM X 2^(Pitch Shift/12)
But you have to check I'm not sure wether I've mixed things up with some minus signs or whatever, I'm not really good at maths either
Hope it can help,
Regards,
B.
Statistics: Posted by bmoussay — 26 Nov 2008, 01:17
]]>
I need a formula.
I have a sample with a lenght of (x) ms at a given BPM.
I want to pitch shift this sample, and I want to know the new lenght of the sample once it has been shift.
Then I want to know the new BPM according to the pitch value.
So, sample lenght+ pitch shift=new bpm
Any idea? A formula could be useful.
Thanks you.
Statistics: Posted by moody33 — 26 Nov 2008, 00:24
]]>