2:1 · 12 semitones
Octave. Never charged.
- Pure
- 1200.00¢
- Tempered
- 1200¢
- Charge
- +0.00¢
- Beat
- 0.00 Hz
Lower note 220 Hz. Pure upper 440.00 Hz. Tempered upper 440.00 Hz.
Equal temperament keeps the octave exact. Everything else is divided inside it.
The two versions are the same note, so "both" gives you one steady tone with no beating. That silence is the baseline for everything else here.