Doppler Effect (Approaching)

f^{'} = f \frac{v + v _{o}}{v - v _{s}}

Frequency increases when source and observer approach.

Variables

f'

Observed frequency

Higher frequency

Hz

f

Source frequency

Emitted frequency

Hz

v

Wave speed

Speed in medium

m/s

v_o

Observer velocity

Toward source

m/s

v_s

Source velocity

Toward observer

m/s

Derivation

Special case of general Doppler formula.

Your notes

0/5000