Download - Reyburn CyberTuner

101
Using PAZ
101
Using PAZ
To take a PAZ reading:
1. Select a note by clicking on the graphic keyboard, or switch notes with the
Computer’s keyboard arrows.
2. Click Record.
3. Play the note and sustain it until the ear stops pulsing.
To take a PAZ reading:
1. Select a note by clicking on the graphic keyboard, or switch notes with the
Computer’s keyboard arrows.
2. Click Record.
3. Play the note and sustain it until the ear stops pulsing.
After PAZ records the note, the tuning fork will spin while PAZ calculates. After a
few seconds, PAZ will display pitch, inharmonicity constant, sustain, volume units,
and a volume bar chart for partials 1 through 16
If you take another reading, PAZ will display the preceding volume bars as grey
bars above the current note’s colored bars.
For your viewing pleasure, the volume bars are displayed in color families — the
fundamental in blue; partials 2, 4, 8, and 16 in red (octaves); partials 3, 6, and 12 in
green (octaves + 5th); partials 5 and 10 in yellow (octaves + 3rd); and the 7th partial
(minor 21st), 9th (23rd), 11th (25th), 13th (27th), 14th (minor 28th), and 15th
(major 28th) in black.
For notes below A1, the 2nd partial is used instead of the fundamental.
Partial ladders can be viewed either as cents offsets from equal temperament
pitches or as cents offsets from perfect harmonics. Click on the appropriate radio
button to select.
Each partial ladder can have its fundamental equalized to zero by clicking on the
button Fund = 0¢.
“¢ to EQ Temp.” shows the offset cents to the equal temperament note closest to
the theoretical harmonic pitch of the partial. For example, the 7th partial is 31.1741
cents flat of the note it is closest to (two octaves and a seventh above fundamental)
plus the effects of inharmonicity and para-harmonicity. Only octave partials are right
on the money.
“¢ to Harmonic” displays a more even progression of inharmonic cents readings
since it shows the cents-off relative to the theoretical frequency of the harmonic.
This mode of viewing discounts the offsets from equal temperament.
After you record a partial ladder, the Ic column shows the inharmonicity constant
calculated from each partial relative to the fundamental. If the Ic formulae predict the
string's motion perfectly then all these numbers should be the same, but they rarely
are. (The difference is called para-harmonicity.) These Ic readings could be
compared to calculated Ic from string lengths and diameters to prove (or disprove)
the accuracy of the equations.
After PAZ records the note, the tuning fork will spin while PAZ calculates. After a
few seconds, PAZ will display pitch, inharmonicity constant, sustain, volume units,
and a volume bar chart for partials 1 through 16
If you take another reading, PAZ will display the preceding volume bars as grey
bars above the current note’s colored bars.
For your viewing pleasure, the volume bars are displayed in color families — the
fundamental in blue; partials 2, 4, 8, and 16 in red (octaves); partials 3, 6, and 12 in
green (octaves + 5th); partials 5 and 10 in yellow (octaves + 3rd); and the 7th partial
(minor 21st), 9th (23rd), 11th (25th), 13th (27th), 14th (minor 28th), and 15th
(major 28th) in black.
For notes below A1, the 2nd partial is used instead of the fundamental.
Partial ladders can be viewed either as cents offsets from equal temperament
pitches or as cents offsets from perfect harmonics. Click on the appropriate radio
button to select.
Each partial ladder can have its fundamental equalized to zero by clicking on the
button Fund = 0¢.
“¢ to EQ Temp.” shows the offset cents to the equal temperament note closest to
the theoretical harmonic pitch of the partial. For example, the 7th partial is 31.1741
cents flat of the note it is closest to (two octaves and a seventh above fundamental)
plus the effects of inharmonicity and para-harmonicity. Only octave partials are right
on the money.
“¢ to Harmonic” displays a more even progression of inharmonic cents readings
since it shows the cents-off relative to the theoretical frequency of the harmonic.
This mode of viewing discounts the offsets from equal temperament.
After you record a partial ladder, the Ic column shows the inharmonicity constant
calculated from each partial relative to the fundamental. If the Ic formulae predict the
string's motion perfectly then all these numbers should be the same, but they rarely
are. (The difference is called para-harmonicity.) These Ic readings could be
compared to calculated Ic from string lengths and diameters to prove (or disprove)
the accuracy of the equations.