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What does 740 Hz sound like?
740 Hz is a midrange frequency. It is a clear midrange tone, close to where the human ear does most of its work for speech and melody.
A 740 Hz sound wave completes 740 cycles every second, so one cycle lasts 1.35 ms. In air at 20 °C, where sound travels at about 343 m/s, each wave is 46.4 cm (1.52 ft) long; in water it stretches to 2.00 m because sound moves about 4.3 times faster there.
Musically, 740 Hz is almost exactly F♯5 (739.99 Hz) in standard A440 tuning. Doubling it to 1,480 Hz raises the pitch by one octave; halving it to 370 Hz lowers it by one.
Wavelength of 740 Hz in different materials
| Medium | Speed of sound | Wavelength |
|---|---|---|
| Air (20 °C) | 343 m/s | 46.4 cm |
| Fresh water | 1,481 m/s | 2.00 m |
| Seawater | 1,500 m/s | 2.03 m |
| Helium | 1,007 m/s | 1.36 m |
| Steel | 5,960 m/s | 8.05 m |
| Glass | 5,640 m/s | 7.62 m |
Harmonics and octaves
Real instruments playing 740 Hz also produce harmonics at whole-number multiples of the fundamental. Their relative strength gives each instrument its timbre.
Which animals can hear 740 Hz?
Can hear it
Humans, Dogs, Cats, Horses, Cows, Sheep, Pigs, Goats, Rabbits, Rats, Gerbils, Guinea pigs, Hedgehogs, Raccoons, Ferrets, Opossums, Chinchillas, Elephants, Bottlenose dolphins, Chickens, Canaries, Budgerigars (parakeets), Cockatiels, Owls, Bullfrogs, Tree frogs, Goldfish, Catfish, Tuna
Cannot hear it
Instruments and voices that can play 740 Hz
Frequently asked questions
What does 740 Hz sound like?
It is a clear midrange tone, close to where the human ear does most of its work for speech and melody.
Can humans hear 740 Hz?
Yes. 740 Hz is inside the typical human hearing range of 20 Hz to 20 kHz.
What musical note is 740 Hz?
740 Hz is almost exactly F♯5, which is 739.99 Hz in standard A440 tuning.
What is the wavelength of 740 Hz?
About 46.4 cm in air at 20 °C and 2.00 m in water.
Can dogs hear 740 Hz?
Yes – dogs hear roughly 67 Hz to 45,000 Hz.