Conclusions

A computational model of Doppler shift was presented, accommodating any number of moving sound sources and moving listeners. For Leslie simulation, multiple sources correspond to the direct and reflected signals from the rotating horn, and two fixed listeners correspond to two ears or two studio microphones. Measurements were made on a real Leslie in order to calibrate the angle-dependent filters corresponding to each propagation path geometry from horn to listener. It was found that the horn impulse response had prominent angle-dependent and angle-independent components, and a relaxation algorithm was devised for separating them.