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What does 12,900 Hz sound like?
12,900 Hz is a brilliance (air) frequency. It is a very high, thin, whistling tone. Sensitivity in this region falls with age, so younger listeners hear it much more clearly than older ones.
A 12,900 Hz sound wave completes 12,900 cycles every second, so one cycle lasts 77.5 µs. In air at 20 °C, where sound travels at about 343 m/s, each wave is 2.7 cm (1.05 in) long; in water it stretches to 11.5 cm because sound moves about 4.3 times faster there.
Hearing at these frequencies declines steadily with age (presbycusis) and with noise exposure. If you cannot hear this tone, check that your headphones can reproduce it before drawing conclusions – and try our hearing test for a playful estimate.
Wavelength of 12,900 Hz in different materials
| Medium | Speed of sound | Wavelength |
|---|---|---|
| Air (20 °C) | 343 m/s | 2.7 cm |
| Fresh water | 1,481 m/s | 11.5 cm |
| Seawater | 1,500 m/s | 11.6 cm |
| Helium | 1,007 m/s | 7.8 cm |
| Steel | 5,960 m/s | 46.2 cm |
| Glass | 5,640 m/s | 43.7 cm |
Harmonics and octaves
Real instruments playing 12,900 Hz also produce harmonics at whole-number multiples of the fundamental. Their relative strength gives each instrument its timbre.
| Harmonic | Frequency | Nearest note |
|---|---|---|
| 1× (fundamental) | 12.9 kHz | – |
| 2× | 25.8 kHz | ultrasonic |
| 3× | 38.7 kHz | ultrasonic |
| 4× | 51.6 kHz | ultrasonic |
| 5× | 64.5 kHz | ultrasonic |
| 6× | 77.4 kHz | ultrasonic |
| 7× | 90.3 kHz | ultrasonic |
| 8× | 103.2 kHz | ultrasonic |
Which animals can hear 12,900 Hz?
Can hear it
Humans, Dogs, Cats, Horses, Cows, Sheep, Pigs, Goats, Rabbits, Rats, Mice, Gerbils, Guinea pigs, Hedgehogs, Raccoons, Ferrets, Opossums, Chinchillas, Bats, Beluga whales, Bottlenose dolphins, Greater wax moths
Cannot hear it
Elephants, Chickens, Canaries, Budgerigars (parakeets), Cockatiels, Owls, Bullfrogs, Tree frogs, Goldfish, Catfish, Tuna
Frequently asked questions
What does 12,900 Hz sound like?
It is a very high, thin, whistling tone. Sensitivity in this region falls with age, so younger listeners hear it much more clearly than older ones.
Can humans hear 12,900 Hz?
Yes. 12,900 Hz is inside the typical human hearing range of 20 Hz to 20 kHz.
What musical note is 12,900 Hz?
12,900 Hz is 48 cents above G9, which is 12.544 kHz in standard A440 tuning.
What is the wavelength of 12,900 Hz?
About 2.7 cm in air at 20 °C and 11.5 cm in water.
Can dogs hear 12,900 Hz?
Yes – dogs hear roughly 67 Hz to 45,000 Hz.