Www.cymaticaudio.com. Products - Energy Transformation Systems and Multimedia Solutions. Audinate - Dante Audio Networking, AV's Leading Technology. Consistent Coverage Formula for a Single Speaker » Daniel Lundberg Sound Design. One of the things on which I’ve been working of late is a formula to find the ideal speaker coverage angle for a seating area. It has involved a lot of trigonometry and double checking in MAPP, but I’ve found something which seems to work pretty well for single speaker applications and fits conveniently into an excel calculator: Introduction The idea for this formula originally came from Bob McCarthy’s concept of viewing a speaker’s coverage as a ratio between the distance to a given point and width of horizontal coverage at that point. Although in practice there are too many factors acting for a formula dealing with speaker coverage to be completely accurate, the goal of this formula is to yield acceptable results when implemented in the field.
Formulation We begin by considering the coverage of the individual loudspeaker: Fig. 1 We will now consider the audience plane: Fig. 2 Applying additional trigonometry, we find y in terms of ϑ: Analysis We’ll apply this formula to two scenarios. X=118’ FRAnalyzer - Sweep Frequency Response Analyzer, SFRA - OMICRON.