Data transmission over sound waves written in JavaScript without any dependencies. All you need is just microphone, speakers and the browser!

Discrete Fourier Transform to draw any shape

The project uses Discrete Fourier Transform to express a drawing as a sequence of epicycles characterised by their initial phase, radius and frequency.

drawing with fourier transforms

Sketching out anything using a collection of sine waves via Discrete Fourier Transform.

NPM module for brute-force calculations of the discrete Fourier transform and inverse discrete Fourier transform.

By using capacitive pressure sensors inside a seat this application is able to retreive the signal and measure the respiratory rate out of its sinus frequency, by using 3 different algorithms (Discrete Fourier Transformation, Continuous Cut Count, Discrete single period)