用于扬声器定向控制的超宽带声学超材料透镜

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-10-13 DOI:10.1063/5.0288633

Xiuyuan Peng, Gregory Hernandez, Steven A. Cummer, Falk-Martin Hoffmann, Junfei Li

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引用次数: 0

摘要

声学超材料已被用于控制声音的传播方向，但其有效带宽较窄，严重限制了其在音频工程中的实用性。在本文中，我们介绍了一种超宽带声学超材料透镜，当放置在4-in前时，它可以全方位地发出1000至10,000 Hz的声音。全程司机。我们还证明了同样的方法可以用来创建一个宽带声聚焦透镜具有一致的指向性模式在2000和20000赫兹之间。在需要宽带无源控制扬声器指向性的任何情况下，超材料透镜都是有利的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Ultra-broadband acoustic metamaterial lens for loudspeaker directivity control

Acoustic metamaterials have been utilized to manipulate the direction of sound propagation, but their practicality in audio engineering has been significantly constrained by their narrow effective bandwidth. In this paper, we introduce an ultra-broadband acoustic metamaterial lens that can omnidirectionally emit sound between 1000 and 10 000 Hz when positioned in front of a 4-in. full-range driver. We also demonstrate that the same method can be employed to create a broadband sound-focusing lens with a consistent directivity pattern between 2000 and 20 000 Hz. The metamaterial lens is advantageous in any situation where broadband passive control of loudspeaker directivity is desired.

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.