Calculateur de l'Effet Doppler Gratuit
Calculez le décalage de fréquence dû à l'effet Doppler pour les sources sonores en mouvement.
Hz
m/s
m/s
m/s
Observed Frequency
482.17 Hz
Frequency Shift42.17 Hz
Observed Frequency vs Source Frequency
Formule
## Doppler Effect The Doppler effect is the change in observed frequency caused by relative motion between source and observer. ### Formula **f_obs = f_source * (v_sound + v_observer) / (v_sound - v_source)** Sign convention: speeds are positive when source and observer move toward each other.
Exemple Résolu
An ambulance siren at 440 Hz approaches a stationary observer at 30 m/s.
- 01f_obs = f_s * (v + v_o) / (v - v_s)
- 02f_obs = 440 * (343 + 0) / (343 - 30)
- 03f_obs = 440 * 343 / 313
- 04f_obs = 482.2 Hz