Sunday 9 November 2014

Tuning done!

Finally, the last two bars had been tuned, and 2 octaves and a fith, that is from C3 at 131.7Hz up to G5 at 789.34Hz, are now available. The last quart was lost in the tuning process, and will maybe be added later.

Here are the measurements. Deviation is given in cents when prefixed with + or -, or the actual versus the desired frequency is stated.
Note Deviation 1st Deviation 2nd Frequency 3rd
G5 +12 -11

F# +29 -36

F +19 -12

E +20 2349 (2655)

D# +12 -12

D +23 +11

C# +10 +33

C +16 -25

H +3 +11

A# +29 1856 (1877)

A4 +21 -7

G# +3 +27

G +17 +0

F# +4 1532 (1490)

F +2 1435 (1406)

E +2 1387 (1327)

D# +11 +48

D +23 1230 (1182)

C# +4 +11

C +8 +44

H +23 -11

A# +15 +22

A +23 -24

G# +8 793 (836)

G +12 +5

F# -12 -7 1801 (1825)
F +0 -20

E -9 +1 1635 (1626)
D# +10 -11 1541 (1534)
D +22 -41 1447 (1448)
C# +13 -18 1363 (1367)
C +5 - -

So all but 2 bars have a slightly too high fundamental. This is fine, going down is easy. The first quart is also triple tuned to some extent. All others are more or less double tuned.

When the bars have been up in the living room for a couple of weeks, I will fix the fundamental to pitch.

Next up:

  • Finish the frame: Need to add a diagonal for stability.
  • Suspension and mounting of bars: There will be a suprise!
Stay tuned!

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