RACK/PROPAGATION & AIR
λ\lambda

Wavelength

See the physical size of the sound you are working with.

Inputs

YOUR SYSTEM
Hz
2020000
°C
-2050

Result

METER
Wavelength
3.434m
The distance occupied by one full pressure cycle
Half wavelength
1.717m
Quarter wavelength
0.859m
Cycle period
10.000ms
+10-1RELATIVE AMPLITUDE3.434 m = one wavelengthDISTANCE THROUGH AIR
One acoustic cycle: Temperature-adjusted

How it works

Low frequencies take up space.

A wave moves at the speed of sound while completing cycles at its frequency. Divide speed by frequency to get the length of one cycle.

The formula

λ=cf\lambda = \frac{c}{f}
T=1fT = \frac{1}{f}
  • cc — speed of sound in m/s\text{m/s}
  • ff — frequency in hertz

Worth knowing

At 100 Hz a wavelength is about 3.43 meters. At 1 kHz it is just 34 centimeters. Small position changes matter much more at high frequencies.

Assumptions

Assumes propagation in ordinary air. Temperature affects sound speed; humidity, pressure variations and wind are not included.

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