Investigating properties of random sound source constellations
Résumé
It is not uncommon in acoustics practice that one has to predict the effect of clusters of sound sources, even if position, aiming, exact power or directionality is not known for each instance at any moment. Some examples are road traffic (line), crowd noise or construction site noise (surface), stage monitor loudspeakers or instruments (volume). In a general formulation clusters of emitters that do not interfere with each other can have either random or definite (A) power, (B) directionality, (C) aiming and (D) position along a (1) trajectory (e.g. road), (2) a surface (rectangular or spherical), or (3) within volume (a rectangular or spherical). The paper presents results of a series of theoretical experiments to find out if there are any characteristic properties of such constellations in the near or far fields.
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