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What does 4,750 Hz sound like?
4,750 Hz is a presence frequency. It is a high, piercing whistle. The ear is still very sensitive here, so even quiet playback sounds loud.
A 4,750 Hz sound wave completes 4,750 cycles every second, so one cycle lasts 211 µs. In air at 20 °C, where sound travels at about 343 m/s, each wave is 7.2 cm (2.84 in) long; in water it stretches to 31.2 cm because sound moves about 4.3 times faster there.
Musically, 4,750 Hz is 19 cents above D8 (4.699 kHz) in standard A440 tuning. Doubling it to 9,500 Hz raises the pitch by one octave; halving it to 2,375 Hz lowers it by one.
Wavelength of 4,750 Hz in different materials
| Medium | Speed of sound | Wavelength |
|---|---|---|
| Air (20 °C) | 343 m/s | 7.2 cm |
| Fresh water | 1,481 m/s | 31.2 cm |
| Seawater | 1,500 m/s | 31.6 cm |
| Helium | 1,007 m/s | 21.2 cm |
| Steel | 5,960 m/s | 1.25 m |
| Glass | 5,640 m/s | 1.19 m |
Harmonics and octaves
Real instruments playing 4,750 Hz also produce harmonics at whole-number multiples of the fundamental. Their relative strength gives each instrument its timbre.
Which animals can hear 4,750 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, Greater wax moths
Frequently asked questions
What does 4,750 Hz sound like?
It is a high, piercing whistle. The ear is still very sensitive here, so even quiet playback sounds loud.
Can humans hear 4,750 Hz?
Yes. 4,750 Hz is inside the typical human hearing range of 20 Hz to 20 kHz.
What musical note is 4,750 Hz?
4,750 Hz is 19 cents above D8, which is 4.699 kHz in standard A440 tuning.
What is the wavelength of 4,750 Hz?
About 7.2 cm in air at 20 °C and 31.2 cm in water.
Can dogs hear 4,750 Hz?
Yes – dogs hear roughly 67 Hz to 45,000 Hz.