Strategies for an Acoustical-Hotspot Generation

Yuan WEN; Jun YANG; Woon-Seng GAN

doi:10.1093/ietfec/e88-a.7.1739

Strategies for an Acoustical-Hotspot Generation

Yuan WEN, Jun YANG, Woon-Seng GAN

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Two methods for hotspot generation using multiple sources, known as time-delay (TD) method and maximum-control-gain (MCG) method are investigated in the two typical acoustical fields, namely, the free field and a rectangular room. Based on the theoretical analysis and simulations, strategies are developed according to the sound field where the target region is defined. In the free field, the MCG method can be used if the performance in terms of control gain is the priority for an optimal control, whereas the TD method is more preferable if the simplicity of implementation is the first consideration. In a room environment, if a target region is defined in the near field where the direct sound dominates, the TD method is still effective. However, in the far field where the reverberant sound prevails, only the MCG method is applicable. The near field/far field can be roughly separated according to the critical distance from the sources in the room.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E88-A No.7 pp.1739-1746

Publication Date: 2005/07/01

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DOI: 10.1093/ietfec/e88-a.7.1739

Type of Manuscript: Special Section PAPER (Special Section on Multi-channel Acoustic Signal Processing)

Category: Sound Field Reproduction

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Yuan WEN, Jun YANG, Woon-Seng GAN, "Strategies for an Acoustical-Hotspot Generation" in IEICE TRANSACTIONS on Fundamentals, vol. E88-A, no. 7, pp. 1739-1746, July 2005, doi: 10.1093/ietfec/e88-a.7.1739.
Abstract: Two methods for hotspot generation using multiple sources, known as time-delay (TD) method and maximum-control-gain (MCG) method are investigated in the two typical acoustical fields, namely, the free field and a rectangular room. Based on the theoretical analysis and simulations, strategies are developed according to the sound field where the target region is defined. In the free field, the MCG method can be used if the performance in terms of control gain is the priority for an optimal control, whereas the TD method is more preferable if the simplicity of implementation is the first consideration. In a room environment, if a target region is defined in the near field where the direct sound dominates, the TD method is still effective. However, in the far field where the reverberant sound prevails, only the MCG method is applicable. The near field/far field can be roughly separated according to the critical distance from the sources in the room.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e88-a.7.1739/_p

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@ARTICLE{e88-a_7_1739,
author={Yuan WEN, Jun YANG, Woon-Seng GAN, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Strategies for an Acoustical-Hotspot Generation},
year={2005},
volume={E88-A},
number={7},
pages={1739-1746},
abstract={Two methods for hotspot generation using multiple sources, known as time-delay (TD) method and maximum-control-gain (MCG) method are investigated in the two typical acoustical fields, namely, the free field and a rectangular room. Based on the theoretical analysis and simulations, strategies are developed according to the sound field where the target region is defined. In the free field, the MCG method can be used if the performance in terms of control gain is the priority for an optimal control, whereas the TD method is more preferable if the simplicity of implementation is the first consideration. In a room environment, if a target region is defined in the near field where the direct sound dominates, the TD method is still effective. However, in the far field where the reverberant sound prevails, only the MCG method is applicable. The near field/far field can be roughly separated according to the critical distance from the sources in the room.},
keywords={},
doi={10.1093/ietfec/e88-a.7.1739},
ISSN={},
month={July},}

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TY - JOUR
TI - Strategies for an Acoustical-Hotspot Generation
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1739
EP - 1746
AU - Yuan WEN
AU - Jun YANG
AU - Woon-Seng GAN
PY - 2005
DO - 10.1093/ietfec/e88-a.7.1739
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E88-A
IS - 7
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - July 2005
AB - Two methods for hotspot generation using multiple sources, known as time-delay (TD) method and maximum-control-gain (MCG) method are investigated in the two typical acoustical fields, namely, the free field and a rectangular room. Based on the theoretical analysis and simulations, strategies are developed according to the sound field where the target region is defined. In the free field, the MCG method can be used if the performance in terms of control gain is the priority for an optimal control, whereas the TD method is more preferable if the simplicity of implementation is the first consideration. In a room environment, if a target region is defined in the near field where the direct sound dominates, the TD method is still effective. However, in the far field where the reverberant sound prevails, only the MCG method is applicable. The near field/far field can be roughly separated according to the critical distance from the sources in the room.
ER -