Hertz
Explore precise frequencies, intervals and octave fields
Hear precise frequencies, compare intervals and beats, and explore the same tone in different views. A4 changes the tuning reference; Field Root sets the octave field’s starting frequency.
Key idea
Hertz counts cycles per second. Doubling frequency produces an octave; adding the same number of hertz does not always produce the same musical interval. Nearby tones also reveal the difference between pitch and beating.
Try this first
Start with a 440 Hz generator and add another at 442 Hz to compare nearby tones. Then inspect an octave field rooted at 440 Hz. Keep the A4 tuning reference separate from Field Root: one changes note interpretation, the other starts the field.
How to get started
- Start in Generators: set a frequency and press Play. Drag a frequency number up or down, or click it to enter an exact value.
- Explore Octave Field, Heatmap and Note Table. Open tone in… transfers a frequency to another view without starting its sound.
- Use Reference & tuning for A4 and tuning settings. In Octave Field, change Field Root to move the field while keeping its interval relationships.
- Views can keep sounding when you switch: Sounding in shows where audio is active. The red alarm button stops all views; use headphones for binaural offsets.
Explore a little further
Try another experiment
Compare 220 with 440 Hz, then 440 with 880 Hz. Both pairs form an octave even though their frequency differences differ. Use Field Root to inspect this relationship without changing your A4 tuning reference.
Good to know
Generators, Octave Field, Heatmap and Note Table are complementary views. Sound may continue in another view; use the panic control to stop all active tones.
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