Loudspeaker Array to Maximize Acoustic Contrast Using Proximal Splitting Method

Imaizumi, Kenta; Niwa, Kenta; Tsutsumi, Kimitaka

doi:10.23919/eusipco54536.2021.9616012

Cited by 1 publication

(1 citation statement)

References 18 publications

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“…Over the past two decades, various PSZ reproduction systems have been implemented with different loudspeaker configurations and sound zone specifications depending on the application scenario. The loudspeakers used in a PSZ system have been configured as linear [2][3][4][5] , circular [6][7][8][9][10][11] , arc-shaped 12,13 arrays in the far field, or in the near field (e.g., headrest loudspeakers in automotive cabins 14,15 ).The sound zones have been designed to be as large as a few meters 2,3,[6][7][8][9] , or as small as a region that only includes the listeners' heads or ears 4,5,7,10,[12][13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

Isolation performance metrics for personal sound zone reproduction systems

Qiao

Léo²,

Choueiri

2022

JASA Express Letters

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Two isolation performance metrics, inter-zone isolation (IZI) and inter-program isolation (IPI), are introduced for evaluating personal sound zone (PSZ) systems. Compared to the commonly used acoustic contrast metric, IZI and IPI are generalized for multichannel audio and quantify the isolation of sound zones and of audio programs, respectively. The two metrics are shown to be generally non-interchangeable and suitable for different scenarios, such as generating dark zones (IZI) or minimizing audio-on-audio interference (IPI). Furthermore, two examples with free-field simulations are presented and demonstrate the applications of IZI and IPI in evaluating PSZ performance in different rendering modes and PSZ robustness.

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