Reference Frequency
The reference frequency control adjusts the frequency of the tuning system’s first pitch, for example yegāh = 98 Hz or ʿushayrān = 110 Hz.
Controls
Section titled “Controls”- Arc knob: drag to adjust (±700 cents range).
- Hz input: type an exact frequency; use up/down arrow keys for ±1 Hz nudges.
- Cents display: shows the current offset in cents.
- Semitone buttons (±): shift by 100 cents.
- Transposition indicator: shows the IPN shift (e.g. “C ↗ C#” or “G ↘ F#−”).
Persistence
Section titled “Persistence”The reference frequency persists relatively when switching tuning systems or starting note names. For example, if you select a tuning system with starting note name yegāh = 98 Hz and change it to 100 Hz, then switch to ʿushayrān, the plugin will use 112.25 Hz rather than reverting to the default of 110 Hz.