Overtone
Spiral
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Measurement
Reference A4 (Hz)
Note names and cents are relative to 12-tone equal temperament at this A4.
Confidence threshold
Only partials at or above this confidence are listed and marked.
Weakest partial listed
Level below the strongest partial in the window.
Shortest partial listed
Partials heard for less time than this are left out. Off lists every confident partial, however short.
Longest analysis window
Frequency resolution
Fast (85 ms)
Standard (170 ms)
Fine (340 ms)
Longer frames separate close partials better and react more slowly.
Display
Spiral starts at
C1
C2
C3
C4
Octaves shown
5
6
7
8
9
Display range
Lobe width
Half-width of the strongest lobes on the spiral, in cents. Display only; the measured frequencies are unaffected.
Window spectrum
Mean power
Peak hold
Saved-bowl labels
Note names
None
Note names beside the coloured rings, where there is room.
Accidentals
Sharps (A#)
Flats (Bb)
Exported image
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Light background
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