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Life & fun · February 4, 2016

A virtual oscilloscope using Web Audio and live microphone input

This online virtual oscilloscope allows you to visualise live sound input and get to grips with how to adjust the display. If you find this useful, our online spectrum analyser may also be of interest to you.

A virtual oscilloscope using Web Audio and live microphone input launched on February 4, 2016 with 42 votes, #1,853 of 4,386 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 10 years on.

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In plain words

This online virtual oscilloscope lets users visualize live sound input from their microphone using Web Audio technology. It allows users to adjust the display to see waveform properties like amplitude and frequency. The tool is designed for anyone learning about electrical signals and how oscilloscopes work to measure and analyze wave characteristics in real time.

written from the facts on this page · September 2026

From the sources

This online virtual oscilloscope allows you to visualise live sound input and get to grips with how to adjust the display. If you find this useful, our online spectrum analyser may also be of interest to you. An oscilloscope is a useful tool for anyone working with electrical signals because it provides a visual representation of the signal's shape, or waveform. This allows you to measure properties of the wave, such as amplitude or frequency. The initial signal above is a 200Hz sine wave, which has an amplitude of 5 volts. The frequency of this wave can be adjusted by using the "Input Wave Frequency" slider. (You can also choose to display a square wave.) If you are browsing using the…from academo.org

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