[PD] making scales from frequency values

J bz jbeezez at googlemail.com
Mon Jul 20 23:24:05 CEST 2009


Dear all,

I have five chimes.  I've worked out the frequencies (using Audacity) of the
5 strongest partials of each chime.  I now want to be able to work out how
to change the octaves of the various partials?  My original intention was to
find the nearest midinote and just use those but after listening to the
results I would much prefer to keep the original ratio's whilst being able
to alter the 'inversions'.

Here's the list that I have already:
BT1
    912Hz
  2434Hz
  4575Hz
  7175Hz
11584Hz

BT2
  1081Hz
  2861Hz
  5339Hz
  8325Hz
15209Hz

BT3
  1211Hz
  3196Hz
  5935Hz
  9199Hz
15206Hz

BT4
  1347Hz
  3553Hz
  6569Hz
10128Hz
18139Hz

BT5
  1812Hz
  4699Hz
  8525Hz
13264Hz
15469Hz

Is there one piece of mathematrical wizardy that can sort this in Pd?

Cheers,

Jbz
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