Line Array Near/Far-Field Transition

Enter a line array's total length and a frequency of interest, and this estimates the distance at which the array stops behaving like a coherent line source and starts spreading like a point source. Useful for sanity-checking near-field coverage claims at the frequencies that matter, and for understanding why a short array loses its "line" behaviour much closer in than a tall one.

Array length (m) Target frequency (Hz) Calculate