Simple qn on sound.... :rofl: Recently, i just happen to read about an article mentioning Sound. It goes like this... A person is standing on a bus-stop.An ambulance with it's siren on came approaching the bus-stop and then passing by it. The article says that when the ambulance is still far away, the distance between the person and the ambulance is still far away, therefore the wavelength is stretched over a great distance. thus making the sound frequency very low. But when the ambulance come closer to the bus-stop, the wavelength is compressed. Thus making the frequency very high.<True/False> Note: This isn't the article's main content...It is just using it as an example... Personally, i feel that it sounds rather "absurd". But i hope someone can really advise me on whether this statement is true or false & WHY? ... I appreciate all ans.Thx ...I thought only the amplitude will differ..?