Sound field reproduction using loudspeaker array

Since conventional stereophonic / surround sound systems are based on an auditory property called summing localization, their appropriate listening position is limited to the center of loudspeakers, the so-called sweet spot. Furthermore, especially when reproducing reverberant sounds, the driving signals of the loudspeakers are manually designed by sound engineers. Sound field reproduction techniques aim to synthesize physical acoustic fields, enabling a broad listening area and sound distance and reverberation reproduction without designing processes.

References

2013

  1. Analytical Approach to Wave Field Reconstruction Filtering in Spatio-Temporal Frequency Domain
    Shoichi Koyama, Ken’ichi Furuya, Yusuke Hiwasaki, and Yoichi Haneda
    IEEE Transactions on Audio, Speech, and Language Processing, 2013

2019

  1. Three-Dimensional Sound Field Reproduction Based on Weighted Mode-Matching Method
    IEEE/ACM Transactions on Audio, Speech, and Language Processing, 2019
    [IEEE SPS Japan Student Journal Paper Award]

2023

  1. jaes2023.gif
    Weighted Pressure and Mode Matching for Sound Field Reproduction: Theoretical and Experimental Comparisons
    Shoichi Koyama, Keisuke Kimura, and Natsuki Ueno
    Journal of the Audio Engineering Society, 2023
    [Invited]