Johnston Notation to Helmholtz-Ellis Converter

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REFERENCE
spelling of 1/1

INPUT
Johnston Notation

OUTPUT
HE Notation

MELODIC DISTANCE
from interval A to B
octave

diatonic pitch (Johnston)

chromatic (Johnston)

frequency of Johnston 1/1 (Hz)

frequency of Johnston A4 (Hz)



C (Johnston) = C (HE) 		octave

diatonic pitch

accidentals










ratio

notation



cent deviation
(ref = A)
0
interval to ref (cents)
0
 frequency (Hz)
440.000000
 Tenney harmonic distance HD
0

interval A



interval B




melodic ratio
1 : 1

melodic step (cents)
0.00
 frequency difference (Hz)
0.000000
 HD
0.000000