Plasma Arc Microphones

In a previous post, I talked about how plasma can be used to build high-fidelity speakers. Plasma isn’t limited to only producing sound– it can also be used to record it. Being made up of physical particles, plasma can be affected by vibrations through the air. This means it is possible to build a plasma arc microphone using the proper circuit. This application is far less common than using a plasma arc for a speaker, but research has still been done on the subject.

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Plasma Arc Speakers

In science fiction, plasma-based technology is often included because it is perceived as futuristic and exotic. Referring to plasma as exotic is understandable, but the technology behind its creation is less so. Since the invention of electric circuits, it has been possible to easily create and control plasma using high voltages. It is pretty common knowledge that high voltages ionize the air producing plasma arcs. What is not-so-common knowledge is the fact that these arcs of plasma can be used to play music.

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Who is LabVIEW Hacker?

So what exactly is LabVIEW? LabVIEW is National Instruments’ program development environment. The name is short for “laboratory virtual instrument engineering workbench”. NI created LabVIEW to enable domain experts to focus on building systems by abstracting the hardware and software. For example, their hardware and software allows a chemist to focus on chemistry and not get bogged down with analog signal conditioning for thermal couples or advanced programming techniques.

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