Foundations·2 / 8
Frequency and pitch
~6 min read
Frequency is measured in Hertz (Hz) - vibrations per second. The faster a wave repeats, the higher the pitch your ear perceives.
Some reference points
| Frequency | Sound |
|---|---|
| 20 Hz | Lowest sound humans can hear |
| 60 Hz | The hum of mains electricity in many countries |
| 440 Hz | Concert A - the standard tuning note |
| 1,000 Hz | Roughly the average pitch of speech |
| 20,000 Hz | Upper limit of young human hearing |
| 40,000+ Hz | Bat echolocation, dog whistles |
Interactive · frequency visualizer
440 Hz