Converter
frequency ratio / interval · Acoustics / music · Historical-modern
octave (frequency interval)
exact
- Record
- M570
- Definition quality
- Exact by definition
- Conversion mode
- formula
- Calculator
- Formula-based
Definition
One octave is a frequency ratio of exactly 2:1.
Reference value
octave (frequency interval) converts through a formula rather than a simple multiplier.
History & use
The octave predates modern acoustics as a musical interval but is fundamental in acoustic frequency-band analysis.
Modern use
Modern use is context-dependent and varies by region or measurement system.
Sources & evidence
Source tier — · confidence high