How Long Is a 2 Hz Wavelength?
A 2 Hz sound wave has a wavelength of 171.61 meters, 17160.73 cm, 563.02 feet (563 feet and 0.19 inches) or 6756.19 inches when traveling in air at 20°C (68°F).
The formula for the wavelenght is λ = c/f where:
cis the celerity (speed) of sound = 343.21 m/s or 1126.03 ft/s in air at 20°C (68°F).fis the frequency = 2 Hz
λ of 171.61 meters, or 563.02 feet.
2 Hz Wavelength Depending on Temperature
The speed of sound in air depends on temperature. Here is how the wavelenght of a 2 Hz sound wave will vary according to temperature:
| Temp (°C) | Temp (°F) | 2 Hz wavelength (m) | 2 Hz wavelength (ft) |
|---|---|---|---|
| -40 | -40 | 153.0413 | 502.1039 |
| -35 | -31 | 154.6736 | 507.4593 |
| -30 | -22 | 156.2888 | 512.7587 |
| -25 | -13 | 157.8876 | 518.0039 |
| -20 | -4 | 159.4703 | 523.1965 |
| -15 | 5 | 161.0375 | 528.3381 |
| -10 | 14 | 162.5895 | 533.4302 |
| -5 | 23 | 164.1269 | 538.4741 |
| 0 | 32 | 165.6500 | 543.4711 |
| 5 | 41 | 167.1592 | 548.4227 |
| 10 | 50 | 168.6550 | 553.3299 |
| 15 | 59 | 170.1375 | 558.1940 |
| 20 | 68 | 171.6073 | 563.0161 |
| 25 | 77 | 173.0646 | 567.7973 |
| 30 | 86 | 174.5097 | 572.5385 |
| 35 | 95 | 175.9430 | 577.2407 |
| 40 | 104 | 177.3646 | 581.9050 |
2 Hz Half Wavelength and Standing Waves
The half wavelength of a 2 Hz sound wave is 85.8 meters, 8580.37 cm, 281.51 feet (281 feet and 6.1 inches) or 3378.1 inches when travelling in air at 20°C (68°F).
Modes (or standing waves) will occur at 2 Hz in rooms where two opposing walls (axial mode), edges (tangential mode) or corners (oblique mode) are spaced by a distance d = nλ/2 where:
nis a natural (positive integer greater than or equal to 1)λis the 2 Hz wavelength = 171.61 meters, or 563.02 feet in air at 20°C (68°F).
2 Hz Standing Waves Distances
| n | Distance (m) | Distance (ft) |
|---|---|---|
| 1 | 85.80 | 281.51 |
| 2 | 171.61 | 563.02 |
| 3 | 257.41 | 844.52 |
| 4 | 343.21 | 1126.03 |
| 5 | 429.02 | 1407.54 |
Given the relatively large 2 Hz half wavelength, standing waves will occur at that frequency in small listening rooms.
You can try to minimze the room modes at 2 Hz by trying different speaker positions, listening positions or by placing bass traps. These can absorb frequencies as low as 63 Hz.
How To Convert 2 Hz To ms
A Hz (Hertz) is a cycle (or period) per second.
Because a 2 Hz wave will ocillate 2 times per second, we can find the time of a single cycle (or period) with the formula p = 1/f where:
fis the frequency of the wave = 2 Hz
The result will be expressed in seconds, so let's multiply by 1000 to get miliseconds:
1 / 2 Hz * 1000 = 500 ms.