Do sound waves have a lower frequency with distance?
You still seem to be a little confused. Frequency does not change during sound wave propagation. What you are thinking of is the Doppler effect, in which a moving SOURCE creates a given frequency sound wave (which has a certain wavelength), which when received by a stationary listenerseems to have a longer or shorter wavelength. This has nothing to do with how far the waves travel. Sound waves of all frequencies (audible) travel at essentially the same speed in air (they are “non-dispersive”). The Doppler effect occurs because the listener and source are in different inertial reference frames. I know that may be a little confusing, but just think of it this way…. You are driving in your car at 668 mph and you emit a sound wave every second (I know the speed is unreasonable, but it makes is easier to understand). This sound wave goes out in front and behind you at 768 mph (speed of sound in air). When you emit the second sound wave (1 second after the first) you are closer to the soun
