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What does 680 Hz sound like?
680 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 680 Hz sound wave completes 680 cycles every second, so one cycle lasts 1.47 ms. In air at 20 °C, where sound travels at about 343 m/s, each wave is 50.4 cm (1.65 ft) long; in water it stretches to 2.18 m because sound moves about 4.3 times faster there.
Musically, 680 Hz is 46 cents below F5 (698.46 Hz) in standard A440 tuning. Doubling it to 1,360 Hz raises the pitch by one octave; halving it to 340 Hz lowers it by one.
Wavelength of 680 Hz in different materials
| Medium | Speed of sound | Wavelength |
|---|---|---|
| Air (20 °C) | 343 m/s | 50.4 cm |
| Fresh water | 1,481 m/s | 2.18 m |
| Seawater | 1,500 m/s | 2.21 m |
| Helium | 1,007 m/s | 1.48 m |
| Steel | 5,960 m/s | 8.76 m |
| Glass | 5,640 m/s | 8.29 m |
Harmonics and octaves
Real instruments playing 680 Hz also produce harmonics at whole-number multiples of the fundamental. Their relative strength gives each instrument its timbre.
Which animals can hear 680 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 680 Hz
Frequently asked questions
What does 680 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 680 Hz?
Yes. 680 Hz is inside the typical human hearing range of 20 Hz to 20 kHz.
What musical note is 680 Hz?
680 Hz is 46 cents below F5, which is 698.46 Hz in standard A440 tuning.
What is the wavelength of 680 Hz?
About 50.4 cm in air at 20 °C and 2.18 m in water.
Can dogs hear 680 Hz?
Yes – dogs hear roughly 67 Hz to 45,000 Hz.