The underlying theory of most massive multichannel spatial sound reproduction systems assumes ideal, e. g. free-field propagation characteristics in the listening room. The effects of non-ideal listening rooms can be reduced by active listening room compensation. A very efficient realization of such a system is given by wave-domain adaptive filtering. Here spatio-temporal signal transformations are used to transform the adaptation problem into a highly reduced representation. However, the optimal transformation depends on the acoustic properties of the listening room, which are in general not known a-priori. Practical implementations therefore use listening room independent transformations. This paper evaluates the circular harmonics decomposition as wave domain transformation. Its favorable properties are demonstrated by simulations and laboratory measurements.
https://www.aes.org/e-lib/browse.cfm?elib=13836
Click to purchase paper as a non-member 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 $33 for non-members and is free for AES members and E-Library subscribers.
Learn more about the AES E-Library
Start a discussion about this paper!