ClassAdapt
Sound — the human hearing range
20 Hz to 20 kHz · λ = v ÷ f
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Frequency
f
−
+
1.0 kHz
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20 Hz · lowest
440 Hz · tuning note
4 kHz · clearest
20 kHz · highest
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WORK OUT THE WAVELENGTH
λ = v ÷ f
speed of sound in air
v = 343 m/s
frequency
f = — Hz
Divide the speed by the frequency. What is the wavelength
λ
?
m
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