ToolsSound, propagation & hearing
Delay ↔ distance
Convert between delay time, distance and samples, with air temperature compensation.
ms
m
ft
smp
°C
How it works
Sound travels about 343 m/s at 20 °C, so each metre costs about 2.9 ms. Use it to time-align delay speakers or compensate mic distances.
The speed of sound rises about 0.6 m/s per °C. Outdoor shows in cold or hot weather need different delay values.
Formulas
- c = 331.3 · √(1 + T / 273.15) [m/s]
- t = d / c
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