Optimal Spatial Sampling of Plant Transfer Functions for Head-Tracked Personal Sound Zones

Yue Qiao, Edgar Choueiri

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The implementation of head tracking in personal sound zone (PSZ) reproduction was investigated in terms of the optimal spatial resolution required for sampling the plant transfer functions, which results from a trade-off between the measurement effort and the robustness of isolation performance against head movements. The plant transfer functions of an experimental PSZ system were densely measured along translational moving trajectories of a dummy head, and then downsampled to different resolutions at which the PSZ filters were computed and the isolation performance was numerically simulated. By analyzing the variation in the isolation performance, the optimal sampling resolution, above which a given minimum level of isolation can be maintained over the reproduction area, was determined as a function of head position and frequency for two separate zones. It was found that the optimal spatial sampling resolution is in general inversely proportional to the distance between the two listeners, and to that between the moving listener and the loudspeaker array. Moreover, the high-frequency part of the plant transfer functions was found to require a higher sampling resolution than the low-frequency part, while a moving bright zone requires a lower sampling resolution than a moving dark zone.

Original languageEnglish (US)
Title of host publicationAES Europe 2023
Subtitle of host publication154th Audio Engineering Society Convention
PublisherAudio Engineering Society
ISBN (Electronic)9781713877783
StatePublished - 2023
EventAES Europe 2023: 154th Audio Engineering Society Convention - Espoo, Helsinki, Finland
Duration: May 13 2023May 15 2023

Publication series

NameAES Europe 2023: 154th Audio Engineering Society Convention

Conference

ConferenceAES Europe 2023: 154th Audio Engineering Society Convention
Country/TerritoryFinland
CityEspoo, Helsinki
Period5/13/235/15/23

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Modeling and Simulation
  • Acoustics and Ultrasonics

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