We propose a method for reproducing multi-zone sound fields in a reverberant room using an array of higher-order loudspeakers. This method enables sparse arrangement of loudspeakers and reproduction of independent sound fields for multiple listeners without the need for headphones. For multi-zone reproduction, global sound field coefficients are obtained using translation operator. By using the coefficient of the room transfer function measured or simulated with an extension of the image-source method, the loudspeakers’ coefficients are then calculated with the minimum norm method in the cylindrical harmonic domain. From experiments of two-zone and three-zone examples, we show that there was a 2N + 1-fold decrease in the number of Nth-order loudspeakers for accurate reproduction with the proposed method compared to conventional methods.
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.