Audible Light

An experiment to transmit sound via light using the Small Signal Trick

Abstract

In this article I have shared my experience in exploring the circuit analysis technique called Small signal method (incremental analysis) and how I built a simple system around that technique, which aims to transmit an audio signal via light beam.

I was inspired to build this after listening to the ‘Small signal trick’ lectures and ‘audio through light’ demo of MITx-6.002.1x course by Professor Anant Agarwal in edX.