Start with your device volume low. Very low tones may be inaudible on phone or laptop speakers; very high tones can be uncomfortable on headphones.
What does 225 Hz sound like?
225 Hz is a bass frequency. It is a low bass tone – a warm hum similar to the low strings of a cello or bass guitar. Phone speakers reproduce it weakly; headphones work much better.
A 225 Hz sound wave completes 225 cycles every second, so one cycle lasts 4.44 ms. In air at 20 °C, where sound travels at about 343 m/s, each wave is 1.52 m (5.00 ft) long; in water it stretches to 6.58 m because sound moves about 4.3 times faster there.
Musically, 225 Hz is 39 cents above A3 (220 Hz) in standard A440 tuning. Doubling it to 450 Hz raises the pitch by one octave; halving it to 112.5 Hz lowers it by one.
Wavelength of 225 Hz in different materials
| Medium | Speed of sound | Wavelength |
|---|---|---|
| Air (20 °C) | 343 m/s | 1.52 m |
| Fresh water | 1,481 m/s | 6.58 m |
| Seawater | 1,500 m/s | 6.67 m |
| Helium | 1,007 m/s | 4.48 m |
| Steel | 5,960 m/s | 26.49 m |
| Glass | 5,640 m/s | 25.07 m |
Harmonics and octaves
Real instruments playing 225 Hz also produce harmonics at whole-number multiples of the fundamental. Their relative strength gives each instrument its timbre.
Which animals can hear 225 Hz?
Can hear it
Humans, Dogs, Cats, Horses, Cows, Sheep, Pigs, Goats, Rats, Gerbils, Guinea pigs, Raccoons, Ferrets, Chinchillas, Elephants, Bottlenose dolphins, Chickens, Budgerigars (parakeets), Owls, Bullfrogs, Tree frogs, Goldfish, Catfish, Tuna
Cannot hear it
Rabbits, Mice, Hedgehogs, Opossums, Bats, Beluga whales, Canaries, Cockatiels, Greater wax moths
Instruments and voices that can play 225 Hz
- Piano (88 keys)
- Guitar (standard tuning)
- Bass guitar (4-string)
- Violin
- Viola
- Cello
- Double bass
- Harp
- Clarinet (B♭, sounding)
- 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
Frequently asked questions
What does 225 Hz sound like?
It is a low bass tone – a warm hum similar to the low strings of a cello or bass guitar. Phone speakers reproduce it weakly; headphones work much better.
Can humans hear 225 Hz?
Yes. 225 Hz is inside the typical human hearing range of 20 Hz to 20 kHz.
What musical note is 225 Hz?
225 Hz is 39 cents above A3, which is 220 Hz in standard A440 tuning.
What is the wavelength of 225 Hz?
About 1.52 m in air at 20 °C and 6.58 m in water.
Can dogs hear 225 Hz?
Yes – dogs hear roughly 67 Hz to 45,000 Hz.