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What does 2,400 Hz sound like?
2,400 Hz is a upper midrange frequency. It is a bright, penetrating tone in the region where human hearing is most sensitive – the reason alarms, whistles and baby cries live here.
A 2,400 Hz sound wave completes 2,400 cycles every second, so one cycle lasts 417 µs. In air at 20 °C, where sound travels at about 343 m/s, each wave is 14.3 cm (5.63 in) long; in water it stretches to 61.7 cm because sound moves about 4.3 times faster there.
Musically, 2,400 Hz is 37 cents above D7 (2.349 kHz) in standard A440 tuning. Doubling it to 4,800 Hz raises the pitch by one octave; halving it to 1,200 Hz lowers it by one.
Wavelength of 2,400 Hz in different materials
| Medium | Speed of sound | Wavelength |
|---|---|---|
| Air (20 °C) | 343 m/s | 14.3 cm |
| Fresh water | 1,481 m/s | 61.7 cm |
| Seawater | 1,500 m/s | 62.5 cm |
| Helium | 1,007 m/s | 42.0 cm |
| Steel | 5,960 m/s | 2.48 m |
| Glass | 5,640 m/s | 2.35 m |
Harmonics and octaves
Real instruments playing 2,400 Hz also produce harmonics at whole-number multiples of the fundamental. Their relative strength gives each instrument its timbre.
Which animals can hear 2,400 Hz?
Can hear it
Humans, Dogs, Cats, Horses, Cows, Sheep, Pigs, Goats, Rabbits, Rats, Mice, Gerbils, Guinea pigs, Hedgehogs, Raccoons, Ferrets, Opossums, Chinchillas, Bats, Elephants, Beluga whales, Bottlenose dolphins, Canaries, Budgerigars (parakeets), Cockatiels, Owls, Bullfrogs, Tree frogs, Goldfish, Catfish, Greater wax moths
Instruments and voices that can play 2,400 Hz
Frequently asked questions
What does 2,400 Hz sound like?
It is a bright, penetrating tone in the region where human hearing is most sensitive – the reason alarms, whistles and baby cries live here.
Can humans hear 2,400 Hz?
Yes. 2,400 Hz is inside the typical human hearing range of 20 Hz to 20 kHz.
What musical note is 2,400 Hz?
2,400 Hz is 37 cents above D7, which is 2.349 kHz in standard A440 tuning.
What is the wavelength of 2,400 Hz?
About 14.3 cm in air at 20 °C and 61.7 cm in water.
Can dogs hear 2,400 Hz?
Yes – dogs hear roughly 67 Hz to 45,000 Hz.