Audio Signal Generator

Free audio signal generator that works in a web browser on a computer or smartphone.

Written by Guy Fernando

Last modified October 2020


The signal generator's default output tone is a sine wave of frequency 1000Hz (or 1kHz), and amplitude of just 1%. Please be careful not to increase the amplitude level too high so as to damage your audio equipment, or worse your hearing.



Using the Audio Signal Generator

This virtual signal generator mimics a standard piece of test equipment known as an audio signal generator. As a result it should be straightforward and intuitive to use. The generator outputs a selection of waveforms, with adjustable amplitude, and adjustable frequency within audible hearing range (20Hz to 20kHz). Use the headphone jack on your computer or smartphone as the output source from the signal generator.

i4cy Signal Generator

Frequency
Hz
Amplitude
%
Waveform

This Fourier Series article here on i4cy.com describes the sine, square, sawtooth, and triangle waveform shapes produced by the signal generator, and explains in detail the mathematical relationship of each of waveform.