[PD] math + music examples
matju at artengine.ca
Thu Mar 24 16:13:19 CET 2011
On Thu, 24 Mar 2011, Joe wrote:
> good one, Mathieu
> why is it that on this chart http://www.phys.unsw.edu.au/jw/notes.html
> 55 is G3, not G4?
Because I'm too lazy to do the [- 1] and I don't rely on my octave numbers
being in sync with anyone else's.
MIDI's note number 0 is C in octave -1. It's not audible. MIDI has 10⅔
octaves, simply because for binary coding reasons they had 2*2*2*2*2*2*2
possibilities. There were already plenty of annoyingly-high notes in
there, so they thought that they'd rather complement it with an unhearable
But Pd has no such restrictions and can use all sorts of impossible MIDI
notes and lots of microtonal resolution between them... as long as you
don't try to convert to real MIDI codes. Note number -120 is the C of
octave -11, note number 666 is the F# of octave 54. Note number 69.0001 is
one 1% of 1 cent above A4.
In _this_ mail I did subtract 1, to comply with the chart.
| Mathieu Bouchard ---- tél: +1.514.383.3801 ---- Villeray, Montréal, QC
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