The frequency ratio of a semitone interval on the equally tempered scale is 2 1/12.
A) Show that the ratio is 1.059
B) Find the speed of an automobile passing a listener in still air if the pitch of the car's horn drops a semitone between the times when the car is coming directly toward him and when it is moving directly away from him.
twords fL= v/λ + vL/λ
away fL= v/λ - vL/λ
The Attempt at a Solution
I'm not sure how to start part A, and i need that info for part b. please advise!