How are pitch and volume affected by the speed or location of an object?

Question

lastdaywork · Answer

Pitch is related to frequency (which only depends on the source)
Volume is related to amplitude (which reduces over time as energy gets dissipated)

agent0smith · Answer

An object moving towards you will be heard as having a higher frequency (the sound waves get "bunched up")

An object moving away from you will be heard as having a lower frequency (the sound waves get "stretched out")

Volume does not get affected by speed. Pitch doesn't get affected by location, but volume does.

lastdaywork · Answer

I couldn't get a precise definition of pitch so wasn't sure whether or not to include Doppler effect. Apparently, I should :)

agent0smith · Answer

Pitch essentially means frequency. Idk if it's an "official" definition though.

lastdaywork · Answer

Thank you :)