Hi John,
I read that article too. Personally I think it is a lot of bunk. It
assumes perfect hearing.
Where ones sweet spot is depends upon his hearing and hearing
degradation. The closest pitch to 432 Hz is 429.97 Hz on my K3.
Some people's sweet spot may be 700 Hz-- since 432 Hz may be 20 db down
from there!
There was a link somebody posted a year or so ago. It could be used
determined how much pitch difference one can detect. For most people is
>3 Hz. For piano tuners and musicians with perfect pitch it is likely
to be less. You can also try using the K3's fine tuning and tune in a
carrier. The increase or decrease the K3's frequency by 3Hz and see if
you can detect any change.
Thus most won't perceive any difference between 429.97 and 432 Hz.
If you can, than congratulations on your perfect pitch.
73 de Brian/K3KO
On 10/13/2013 14:03, John Seney wrote:
Hi Folks:
The CW pitch resolution in my K3 seems to be 10 Hz per step. A recent article
in QST
spoke of 432 Hz as being a sweet spot frequency based on musical notes. A quick
search
on frequencies of real musical notes shows hardly any are at integer values.
Note -- Freq -- Wavelength
D4 293.66 117.
D#4/Eb4 311.13 111.
E4 329.63 105.
F4 349.23 98.8
F#4/Gb4 369.99 93.2
G4 392.00 88.0
G#4/Ab4 415.30 83.1
A4 440.00 78.4
A#4/Bb4 466.16 74.0
B4 493.88 69.9
C5 523.25 65.9
C#5/Db5 554.37 62.2
D5 587.33 58.7
D#5/Eb5 622.25 55.4
E5 659.26 52.3
F5 698.46 49.4
F#5/Gb5 739.99 46.6
G5 783.99 44.0
G#5/Ab5 830.61 41.5
A5 880.00 39.2
Could the firmware be changed for experimentation with this or is there an
easier
way to accomplish it with RIT or filter offsets?
73
John - WD1V
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