18,210 Hz Wavelength

How Long Is a 18210 Hz Wavelength?

A 18210 Hz sound wave has a wavelength of 0.02 meters, 1.88 cm, 0.06 feet (0 feet and 0.74 inches) or 0.74 inches when traveling in air at 20°C (68°F).

The formula for the wavelenght is λ = c/f where:

  • c is the celerity (speed) of sound = 343.21 m/s or 1126.03 ft/s in air at 20°C (68°F).
  • f is the frequency = 18210 Hz
which gives a wavelength λ of 0.02 meters, or 0.06 feet.

18210 Hz Wavelength Depending on Temperature

The speed of sound in air depends on temperature. Here is how the wavelenght of a 18210 Hz sound wave will vary according to temperature:

Temp (°C) Temp (°F) 18210 Hz wavelength (cm)18210 Hz wavelength (in)
-40-401.68080.6618
-35-311.69880.6688
-30-221.71650.6758
-25-131.73410.6827
-20-41.75150.6896
-1551.76870.6963
-10141.78570.7030
-5231.80260.7097
0321.81930.7163
5411.83590.7228
10501.85230.7293
15591.86860.7357
20681.88480.7420
25771.90080.7483
30861.91660.7546
35951.93240.7608
401041.94800.7669

18210 Hz Half Wavelength and Standing Waves

The half wavelength of a 18210 Hz sound wave is 0.01 meters, 0.94 cm, 0.03 feet (0 feet and 0.37 inches) or 0.37 inches when travelling in air at 20°C (68°F).

Modes (or standing waves) will occur at 18210 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:

  • n is a natural (positive integer greater than or equal to 1)
  • λ is the 18210 Hz wavelength = 0.02 meters, or 0.06 feet in air at 20°C (68°F).

18210 Hz Standing Waves Distances

n Distance (m) Distance (ft)
10.010.03
20.020.06
30.030.09
40.040.12
50.050.15

We typically don't treat rooms for standing waves above 300 Hz.

Given the relatively small 18210 Hz half wavelength, you can treat your room by using thick acoustic foam. This will absorb frequencies as low as 250 Hz, and all the way up to 20,000 Hz.

How To Convert 18210 Hz To ms

A Hz (Hertz) is a cycle (or period) per second.

Because a 18210 Hz wave will ocillate 18210 times per second, we can find the time of a single cycle (or period) with the formula p = 1/f where:

  • f is the frequency of the wave = 18210 Hz

The result will be expressed in seconds, so let's multiply by 1000 to get miliseconds:

1 / 18210 Hz * 1000 = 0.05 ms.