Fourier Transform of Electric Signal using Kundt's Tube

TL;DR

This paper demonstrates a mechanical method using Kundt's tube to visualize and understand the Fourier transform of electric signals, aiding educational comprehension of signal decomposition.

Contribution

It introduces a novel, hands-on experimental approach to illustrate Fourier transforms through mechanical demonstrations with Kundt's tube.

Findings

Successful identification of component frequencies

Approximation of amplitudes of sinusoidal signals

Enhanced understanding of Fourier transform concepts

Abstract

An experiment to demonstrate the Fourier transform of an electric signal using the Kundt's tube is described. The results of finding the component frequencies and an approximation to the amplitudes of two sinusoidal signals which compose an input electric signal is presented. Undergraduate students are expected to more easily relate to the meaning of a Fourier transform through such mechanical demonstrations.