Project researcher Faculty of Information Technology and Communication Sciences, Tampere University Helsinki, Uusimaa, Finland
The spectral quality reproduced by multichannel spatial audio reproduction methods are studied in two regular and one irregular loudspeaker layouts when the human head is analytically modeled as a spherical scatterer. The layouts have such a number of loudspeakers that is found in some high-end laboratory conditions. The results verify that the reproduction quality drops above a certain frequency limit, and the introduced spectral errors are more severe with Ambisonics than with VBAP. The head-like scatterer increases errors on the contralateral side of a sound source, and the errors on the ipsilateral side are mostly unaffected. In addition, the frequency limit of the errors may be lower depending on the source direction.
Authors: Lauros Pajunen (Aalto University), Archontis Politis (Tampere University), Markus Vaalgamaa (Huawei Technologies), Stefan Strömmer (Huawei Technologies) and Ville Pulkki (Aalto University)