MusicianCV · TRMinor whole tone
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Tuning and pitch systems
Minor whole tone · 10:9 → 360 × 10/9 = 400 Hz
Fix a reference frequency before comparing tunings. An octave doubles frequency. Convert a frequency ratio to cents with 1200 × log₂(ratio).
Example
Read the ratio alongside the worked calculation. · 10:9 / 360 × 10/9 = 400 Hz
Read the ratio alongside the worked calculation.10:9 360 × 10/9 = 400 Hz
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How does a frequency difference differ from a ratio?
Answer
Moving the same interval to another pitch preserves the ratio. The difference in hertz can change.Related topics
Reference tuning versus transpositionReferences
Frequency and Pitch of Sound
Subject-expert review pending.