Location of horn speakers in a reverberation room
Keywords:Acoustic fields, Acoustic noise, Reverberation, White noise, Cut-off, Design constraints, Design criterion, Diffuse sound fields, Random noise, research methods, Reverberation rooms, Sound level, Sound source, Source functions, Theoretical research
AbstractConsiderable theoretical research has been conducted in understanding the design constraints of horn speakers. Further, the locations of horn speakers in reverberation rooms had been well researched. However, most of the research methods applied simple sinusoidal source functions (tones) to evaluate the design criteria of horn speakers. The understanding of the horn speaker behaviour, when band limited random noise signatures such as pink noise and white noise are used as input sources, is still not clear. A hyperbolic horn with cut off frequency of 70 Hz was used in a medium sized reverberation room to study the horn behaviour. Some of the basic questions to be studied were the influence of horn location on the cut-off frequency, as well as the influence of the horn location on the diffuse sound field in the reverberation room. In addition, the influence of the input sound source on the room sound levels was also studied. The results of the experiment are presented in this paper.
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