Hello, the internet. I am attempting to graph Doppler Shift as a function of time for a music project. The equation for observed frequency is: fo=fs(c)/vs(c) Where fo is observed frequency fs is the source frequency c is the speed of sound vs is the velocity of the source But when working with this equation I became confused: The entire point of the Doppler Shift is that the frequency changes over time, but time seems to be represented nowhere in this equation. So, at what point in time, or alternatively how far away from the listener is this equation measuring? Also, can someone provide me with an equation that could graph fo as a function of time? Thanks!