TY - GEN
T1 - Dynamic local sound field synthesis with multi-channel 1-bit signal reproduction system
AU - Kurokawa, Kakeru
AU - Tsunokuni, Izumi
AU - Ikeda, Yusuke
AU - Oikawa, Yasuhiro
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant Number 17KT0142.
Publisher Copyright:
© 2019 Proceedings of the International Congress on Acoustics. All rights reserved.
PY - 2019
Y1 - 2019
N2 - To reproduce sound field accurately, local sound field synthesis(Local SFS) with virtual loudspeakers that are placed densely around a local listening area have been proposed. In local SFS, it is necessary to limit the size of the listening area. Thus, a listener's head can move out of a listening area due to the natural movement of the listener. In this paper, we propose the concept of a dynamic sound field synthesis system which can moves the sound field synthesis area so as to track the listener's head to allow the listener's movement. For the purpose of facilitating the construction of the massive loudspeaker system in an ordinary room, we utilize a playback system based on a high-speed 1-bit signal that can directly drive a loudspeaker. The proposed system can move the listening area by switching the corresponding local SFS signals obtained from the database including the source signals convolved with the driving functions to reproduce the multiple local area. In simulation experiments, reproduction errors of dynamic local and ordinary SFSs for a plane wave are compared to evaluate the accuracy of sound field by dynamic local SFS.
AB - To reproduce sound field accurately, local sound field synthesis(Local SFS) with virtual loudspeakers that are placed densely around a local listening area have been proposed. In local SFS, it is necessary to limit the size of the listening area. Thus, a listener's head can move out of a listening area due to the natural movement of the listener. In this paper, we propose the concept of a dynamic sound field synthesis system which can moves the sound field synthesis area so as to track the listener's head to allow the listener's movement. For the purpose of facilitating the construction of the massive loudspeaker system in an ordinary room, we utilize a playback system based on a high-speed 1-bit signal that can directly drive a loudspeaker. The proposed system can move the listening area by switching the corresponding local SFS signals obtained from the database including the source signals convolved with the driving functions to reproduce the multiple local area. In simulation experiments, reproduction errors of dynamic local and ordinary SFSs for a plane wave are compared to evaluate the accuracy of sound field by dynamic local SFS.
KW - CPU/FPGA SoC
KW - Delta-sigma modulation
KW - Digital Loudspeaker Array
KW - Sound Field Reproduction
UR - http://www.scopus.com/inward/record.url?scp=85099330199&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85099330199&partnerID=8YFLogxK
U2 - 10.18154/RWTH-CONV-239671
DO - 10.18154/RWTH-CONV-239671
M3 - Conference contribution
AN - SCOPUS:85099330199
T3 - Proceedings of the International Congress on Acoustics
SP - 3071
EP - 3076
BT - Proceedings of the 23rd International Congress on Acoustics
A2 - Ochmann, Martin
A2 - Michael, Vorlander
A2 - Fels, Janina
PB - International Commission for Acoustics (ICA)
T2 - 23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019
Y2 - 9 September 2019 through 23 September 2019
ER -