Article

All-Round Ambisonic Decoding: Spread and Correlation (vor Ort)

* Presenting author
Day / Time: 23.03.2022, 14:20-14:40
Room: 7-01.
Typ: Regulärer Vortrag
Online-access: Bitte loggen Sie sich ein, damit weitere Inhalte sichtbar werden (bspw. der Zugang zur Onlinesitzung).
Abstract:

All-Round Ambisonic Decoding (AllRAD) has become a standard approach to Ambisonic rendering on surrounding loudspeakers. Theextensibility of its vector-base amplitude panning (VBAP) layer with imaginary loudspeakers, their muting or downmix, makes it successfully customizable to various common loudspeaker setups, which often exhibit gaps at the bottom or top, quadrilateral loudspeaker groups, or non-uniform angular coverage. And yet, reasonable concerns were raised about potential: (i) spread introduced by the VBAP discretization kernel and (ii) reduction of decorrelation for rendering on purely horizontal setups with imaginary loudspeakers for zenith and nadir muted. In this paper, we inspect the rE vector length to assess additional spread introduced by AllRAD, considering a geometrically uniform setup. As thinkable remedy, we consider an average rotationally symmetric VBAP's panning function and investigate if it is a reasonable strategy to employ it in spherical deconvolution that compensates for the additional spread. About the concern related to reduced decorrelation on horizontal setups, we inspect the covariance matrix of the decoder assuming a spherically isotropic diffuse field, and we investigate in how far vertical focusing to the horizon is a reasonable way to preserve diffuse-field rendering on a horiziontal loudspeaker setup.

Error

Error : E_DEPRECATED

strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated

1
/kunden/431424_13355/webseiten/subdomains/app2022.daga-tagung.de/memyc/resources/OutputCompression.php, line 35
32.              */
33.             if (headers_sent()) {
34.                 $encoding = false;
35.             } elseif (strpos($HTTP_ACCEPT_ENCODING, 'x-gzip') !== false) {
36.                 $encoding = 'x-gzip';
37.             } elseif (strpos($HTTP_ACCEPT_ENCODING, 'gzip') !== false) {
38.                 $encoding = 'gzip';