Doppler Effect Calculator
Calculate the observed frequency due to the Doppler effect for sound waves. Accounts for both source and observer motion relative to the medium. Uses f′ = f × (v ± v_o) / (v ∓ v_s).
Inputs
Positive = approaching observer
Positive = approaching source
Results
Observed Freq
478.48 Hz
Shift
+38.48 Hz
Change
+8.7%
Doppler Effect Results
| Parameter | Value |
|---|---|
| Source Frequency | 440 Hz |
| Source Velocity | 0 m/s (0.0 km/h) |
| Observer Velocity | 30 m/s (108.0 km/h) |
| Speed of Sound | 343 m/s |
| Observed Frequency | 478.48 Hz |
| Frequency Shift | +38.48 Hz (+8.75%) |
| Source Wavelength | 0.7795 m |
| Observed Wavelength | 0.7168 m |
| Formula | f' = f(v + v_o)/(v - v_s) |