Doppler Effect Calculator — Fórmula
## 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.
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.
Ejemplo Resuelto
An ambulance siren at 440 Hz approaches a stationary observer at 30 m/s.
- f_obs = f_s * (v + v_o) / (v - v_s)
- f_obs = 440 * (343 + 0) / (343 - 30)
- f_obs = 440 * 343 / 313
- f_obs = 482.2 Hz