The DOPPLER effect Explained | Sound Waves

The Doppler effect is an alteration in the observed frequency of a sound due to motion of either the source or the observer. Although less familiar, this effect is easily noticed for a stationary source and moving observer. For example, if you ride a train past a stationary warning horn, you will hear the horn’s frequency shift from high to low as you pass by. The actual change in frequency due to relative motion of source and observer is called a Doppler shift.

[levinashadare]

Thank you I really understood better than one hour lecture with my instructor

[FrancisConteh-yq]

Thank you very much sir, I have been struggling with this topic. But now I understood

[Ohzzy]

thanks alot, this textbook's just complicating everything.
this really helped. I derived the last two equations before i got to see them btw

[aishabello]

I thought you said if they're moving in opposite directions, it's fo=fs×(V-Vo)/V+Vs. If so, that can't be the answer to the second question. Pls review the fo4mulas again.

[HelenaMarcelino-jc]

I cant understand were there 340m/s of the third example came?