Two-dimensional finite difference-time domain simulation of moving sound source and receiver

In this paper, a moving sound source and receiver on an arbitrary trajectory are implemented in the two-dimensional finite difference-time domain (FDTD) method. Two methods proposed to implement point FDTD method which physically valid analysis is possible including Doppler effect. One direct other convolution The formulations numerical experiments made for field, accuracy of two compared. It confirmed that both can be applied effect, have almost same accuracy. found has advantage waveform speed freely changed at time when either or stationary.