Doppler Simulation and the Leslie

Julius O. Smith; Stefania Serafin; Jonathan Abel; David Berners
DAFx-2002 - Hamburg
An efficient algorithm for simulating the Doppler effect using interpolating and de-interpolating delay lines is described. The Doppler simulator is used to simulate a rotating horn to achieve the Leslie effect. Measurements of a horn from a real Leslie are used to calibrate angle-dependent digital filters which simulate the changing, angle-dependent, frequency response of the rotating horn.