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Convention Paper

Personal Sound Zones: A Comparison between Frequency and Time Domain Formulations in a Transportation Context

Authors: Vindrola, Lucas; Melon, Manuel; Chamard, Jean-Christophe; Gazengel, Bruno; Plantier, Guy

AES Convention 147 · Paper 10216 · October 2019

Abstract

This paper compares the formulation of a least-squares pressure matching algorithm in the frequency and time domains for the generation of Personal Sound Zones (PSZ) for a transportation application. Due to variations in the transportation’s acoustic environment, the calculation time is added to the usually found metrics in the PSZ bibliography (like Acoustic Contrast, Effort, etc.). Both formulations are implemented to control two zones in three configurations (4, 6, and 8 sources), using monopole simulations and anechoic measurements. In spite of not always presenting perfectly causal filters—pre-ringing in some filters occurs in some cases—the frequency domain formulation allows achieving equal levels of Acoustic Contrast, Effort, and Reproduction error more than 500 times faster than the time domain formulation.

Details

Published in
AES Convention 147
AES Convention
147
Paper number
10216
Publication date
October 6, 2019
Session subject
Applications in Audio
Affiliation
PSA Group, Rueil-Malmaison, France; Le Mans Université, Le Mans cedex 9, France (See document for exact affiliation information.)
Type
Convention Paper