AES E-Library

Limitations of Point-Source Sub-Woofer Array Models for Live Sound

This paper examines the validity of applying simple models to the kind of highly configurable, low frequency arrays typically used for live sound. Measurements were performed on a single full-sized touring sub-woofer array element at different positions within a number of different array configurations. It was discovered that radiation was rarely omnidirectional and in some cases more than 20 dB from being so. Additionally, the in-situ polar response significantly differed from that obtained with the cabinet in isolation, the degree of difference (2–10 dB) was strongly dependent on array type and element position. For compact arrays we demonstrate, via the application of the “acoustic center” concept, that even when elemental radiation approaches omnidirectional behavior some array configurations are particularly susceptible to errors arising from commonly applied assumptions.

Authors: Thompson, Ambrose; Luzarraga Iturrioz, Josebaitor; Anthony, Phil
Affiliation: Martin Audio, High Wycombe, UK
AES Convention:133 (October 2012) Paper Number:8718 Import into BibTeX
Subject:Spatial Audio Over Loudspeakers

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD 133Papers)   /conv/133/8718.pdf

Start a discussion about this paper!