PIXHELL：当像素学会尖叫时

IF 5.4 2区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS

Computers & Security Pub Date : 2025-06-21 DOI:10.1016/j.cose.2025.104568

Mordechai Guri

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引用次数: 0

摘要

本文提出了一种利用液晶显示器（lcd）的电学特性产生声音的新技术。这种现象的发生是由于液晶面板内的电容在快速像素状态转换过程中产生的振动噪声。通过调制这些过渡通过特别制作的位图模式投射到屏幕上，我们演示了如何微弱但可听的声音信号可以直接从显示器产生。我们设计、实现、评估和测试了一个系统，该系统将LCD重新用作声音发射设备。该技术的潜在应用包括低功耗听觉反馈系统、短距离设备通信、气隙隐蔽信道、安全听觉信号和人机交互的创新方法。

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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PIXHELL: When pixels learn to scream

This paper presents a novel technique for generating sound by leveraging the electrical properties of liquid crystal displays (LCDs). The phenomenon occurs due to vibrational noise produced by capacitors within the LCD panel during rapid pixel state transitions. By modulating these transitions through specially crafted bitmap patterns projected onto the screen, we demonstrate how weak yet audible acoustic signals can be generated directly from the display. We designed, implemented, evaluated, and tested a system that repurposes the LCD as a sound-emitting device. Potential applications for this technique include low-power auditory feedback systems, short-range device communication, air-gap covert channels, secure auditory signaling, and innovative approaches to human–computer interaction.

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来源期刊

Computers & Security 工程技术-计算机：信息系统

CiteScore

12.40

自引率

7.10%

发文量

365

审稿时长

10.7 months

期刊介绍： Computers & Security is the most respected technical journal in the IT security field. With its high-profile editorial board and informative regular features and columns, the journal is essential reading for IT security professionals around the world. Computers & Security provides you with a unique blend of leading edge research and sound practical management advice. It is aimed at the professional involved with computer security, audit, control and data integrity in all sectors - industry, commerce and academia. Recognized worldwide as THE primary source of reference for applied research and technical expertise it is your first step to fully secure systems.