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What does 256 Hz sound like?
256 Hz is a low midrange frequency. It sits in the low midrange: a rounded, full tone in the region of male and female speaking voices and the lower notes of a piano.
A 256 Hz sound wave completes 256 cycles every second, so one cycle lasts 3.91 ms. In air at 20 °C, where sound travels at about 343 m/s, each wave is 1.34 m (4.40 ft) long; in water it stretches to 5.79 m because sound moves about 4.3 times faster there.
Musically, 256 Hz is 38 cents below C4 (261.63 Hz) in standard A440 tuning. Doubling it to 512 Hz raises the pitch by one octave; halving it to 128 Hz lowers it by one.
Wavelength of 256 Hz in different materials
| Medium | Speed of sound | Wavelength |
|---|---|---|
| Air (20 °C) | 343 m/s | 1.34 m |
| Fresh water | 1,481 m/s | 5.79 m |
| Seawater | 1,500 m/s | 5.86 m |
| Helium | 1,007 m/s | 3.93 m |
| Steel | 5,960 m/s | 23.28 m |
| Glass | 5,640 m/s | 22.03 m |
Harmonics and octaves
Real instruments playing 256 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) | 256 Hz | C4 |
| 2× | 512 Hz | C5 |
| 3× | 768 Hz | G5 |
| 4× | 1.024 kHz | C6 |
| 5× | 1.28 kHz | D♯6 |
| 6× | 1.536 kHz | G6 |
| 7× | 1.792 kHz | A6 |
| 8× | 2.048 kHz | C7 |
Which animals can hear 256 Hz?
Can hear it
Humans, Dogs, Cats, Horses, Cows, Sheep, Pigs, Goats, Rats, Gerbils, Guinea pigs, Hedgehogs, Raccoons, Ferrets, Chinchillas, Elephants, Bottlenose dolphins, Chickens, Canaries, Budgerigars (parakeets), Cockatiels, Owls, Bullfrogs, Tree frogs, Goldfish, Catfish, Tuna
Cannot hear it
Rabbits, Mice, Opossums, Bats, Beluga whales, Greater wax moths
Instruments and voices that can play 256 Hz
- Piano (88 keys)
- Guitar (standard tuning)
- Bass guitar (4-string)
- Violin
- Viola
- Cello
- Double bass
- Harp
- Flute
- Clarinet (B♭, sounding)
- Oboe
- Bassoon
- Alto saxophone (sounding)
- Tenor saxophone (sounding)
- Trumpet (B♭, sounding)
- French horn (sounding)
- Trombone
- Tuba
- Bass voice
- Baritone voice
- Tenor voice
- Alto voice
- Mezzo-soprano voice
- Soprano voice
Frequently asked questions
What does 256 Hz sound like?
It sits in the low midrange: a rounded, full tone in the region of male and female speaking voices and the lower notes of a piano.
Can humans hear 256 Hz?
Yes. 256 Hz is inside the typical human hearing range of 20 Hz to 20 kHz.
What musical note is 256 Hz?
256 Hz is 38 cents below C4, which is 261.63 Hz in standard A440 tuning.
What is the wavelength of 256 Hz?
About 1.34 m in air at 20 °C and 5.79 m in water.
Can dogs hear 256 Hz?
Yes – dogs hear roughly 67 Hz to 45,000 Hz.