Figure 2: Reconstruction results of RWAH for dual sources.
From: A refined wideband acoustical holography based on equivalent source method

(a,b and c) are the reconstruction results of RWAH at the frequency of 500 Hz, 2000 Hz and 4000 Hz, respectively. (d,e and f) are the theory sound pressure level (unit: dB) of the frequency of 500 Hz, 2000 Hz and 4000 Hz, respectively.