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The Doppler effect describes frequency change when a source and observer are in relative motion. Sound pitches higher when approaching and lower when receding.
Formel
f' = f × (v ± v_observer) / (v ∓ v_source)
Steg-för-steg-guide
- 1Enter source frequency and speed
- 2Enter observer and source velocities
- 3Apply Doppler formula with correct sign conventions
Lösta exempel
Ingång
f = 440 Hz, source approaching at 10 m/s, v = 340 m/s
Resultat
f' ≈ 454 Hz
Observed frequency increases
Vanliga misstag att undvika
- ✕Wrong sign conventions for approaching/receding
- ✕Using ground speed instead of relative speed
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