Proper location of the transducers for an active noise barrier

The main intention of this study is to propose general criteria for the locations control sources and error microphones that improve performance active noise barrier. Based on proposed study, greater reduction attained when diffracted field source canceled with sources, is, it suggested locate incident side below path connects furthest point in shadow zone edge Furthermore, are most suitably placed barrier where they under both primary sources. results also show these criteria, achieves an extra varies from 14.9 3.9 dB (for one-third octave bands 63 Hz 1 kHz) 9.3 broadband noises.