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What does 655 Hz sound like?
655 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 655 Hz sound wave completes 655 cycles every second, so one cycle lasts 1.53 ms. In air at 20 °C, where sound travels at about 343 m/s, each wave is 52.4 cm (1.72 ft) long; in water it stretches to 2.26 m because sound moves about 4.3 times faster there.
Musically, 655 Hz is 11 cents below E5 (659.26 Hz) in standard A440 tuning. Doubling it to 1,310 Hz raises the pitch by one octave; halving it to 327.5 Hz lowers it by one.
Wavelength of 655 Hz in different materials
| Medium | Speed of sound | Wavelength |
|---|---|---|
| Air (20 °C) | 343 m/s | 52.4 cm |
| Fresh water | 1,481 m/s | 2.26 m |
| Seawater | 1,500 m/s | 2.29 m |
| Helium | 1,007 m/s | 1.54 m |
| Steel | 5,960 m/s | 9.10 m |
| Glass | 5,640 m/s | 8.61 m |
Harmonics and octaves
Real instruments playing 655 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) | 655 Hz | E5 |
| 2× | 1.31 kHz | E6 |
| 3× | 1.965 kHz | B6 |
| 4× | 2.62 kHz | E7 |
| 5× | 3.275 kHz | G♯7 |
| 6× | 3.93 kHz | B7 |
| 7× | 4.585 kHz | D8 |
| 8× | 5.24 kHz | E8 |
Which animals can hear 655 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 655 Hz
Frequently asked questions
What does 655 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 655 Hz?
Yes. 655 Hz is inside the typical human hearing range of 20 Hz to 20 kHz.
What musical note is 655 Hz?
655 Hz is 11 cents below E5, which is 659.26 Hz in standard A440 tuning.
What is the wavelength of 655 Hz?
About 52.4 cm in air at 20 °C and 2.26 m in water.
Can dogs hear 655 Hz?
Yes – dogs hear roughly 67 Hz to 45,000 Hz.