Time-domain pressure response of arrays with periodic excitation

A time-domain method utilizing the spatial impulse response is proposed to compute beam patterns for array transducers where each array element may have a unique continuously periodic (CP) excitation. The method is useful for cases when an efficient time-domain approach is desired for the steady-state and transient results. The pressures for each array element at a point P in the sound field are computed over the lowest period T and an appropriate time shift is applied. The resulting pressures are summed to give the total pressure at P.