耳机扬声器中诱导噪声的多物理场分析

2022 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI) Pub Date : 2022-08-01 DOI:10.1109/EMCSI39492.2022.9889657

P. Gottipati, Krishnaveni Mellachervu, Mingfeng Xue, Jingchen Liang, B. Leung, Jianmin Zhang

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引用次数: 0

摘要

扬声器对附近的电子设备很敏感。携带高频电流的电迹可以在扬声器的音圈中感应电磁电流。感应电流可引起音圈的振动，从而产生可听的声学噪声。本文提供了一个多物理场仿真工作流程来计算放置在耳机模块附近的攻击线圈产生的感应电磁场对音圈的作用力。

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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Multiphysics Analysis of Induced Acoustic Noise in an Earbud Speaker

Speakers can be sensitive to nearby electronics. Electrical traces carrying high frequency electrical currents can induce electromagnetic current in the voice coil of a speaker. The induced current can cause vibration of the voice coil thereby resulting in audible acoustic noise. This paper provides a Multiphysics simulation workflow to compute the force on voice coil due to the induced electromagnetic field from an aggressor coil placed in the vicinity of the earbud module.

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来源期刊

2022 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)

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