Controlled sound field with a dual layer loudspeaker array

A Directional Loudspeaker Array for Surround Sound in Reverberant Rooms

We present a method to enhance the performance of the sound field reproduction approach to 2-D surround sound applicable for reverberant rooms, under the constraint that only a small number of loudspeakers is permissible. The method is based on the idea of using steerable directional loudspeakers to exploit the room reverberation. In home theater applications, exact sound field reproduction is ...

The Effect of Enclosure Coupling on a Dual-layer Linear Loudspeaker Array

Loudspeaker arrays are increasingly being used in a variety of applications where there is a restriction on the electrical power consumption and the array must be robust to changes in the acoustic environment. Previous work has demonstrated that the efficiency and robustness of a two-source endfire loudspeaker array can be improved by acoustically coupling the two loudspeakers via a common encl...

Sound Focusing Based on Optimal Loudspeaker Array Beamforming

Sound focusing is an important problem in audio reproduction, where a virtual acoustic source needs be synthesized in the region surrounded by a loudspeaker array. This problem was tackled in the previous research via the Helmholtz integral approach, brightness control, acoustic contrast control, etc. In this paper, the same problem was revisited from the perspective of beamforming. A source ar...

Loudspeaker Array Processing for Personal Sound Zone Reproduction

Compact Loudspeaker Array for Enhanced Stereophonic Sound Reproduction

This paper illustrates the demonstration of sonic emotion 3D sound technology for compact loudspeaker arrays. The technology combines stereo/5.1 spatial analysis techniques with advanced sound field control techniques based on Wave Field Synthesis for optimum sound rendering of stereo/5.1 content within an extended listening area. sonic emotion offers a complete solution in the form of a chip t...