Frequency Visualizer

Frequency Visualizer is a small real-time tool for drawing and playing with signal shapes. It came out of two things at once: I like signals and waveforms, and I wanted another focused piece to build on my own C++ application framework. The appeal is immediacy, move a slider and the wave redraws under your hand.

What it does

Nine waveform types, all rendered live:

• Sine and absolute sine
• Cosine
• Square
• Triangle
• Sawtooth
• Pulse, with duty-cycle control
• Noise
• Exponential decay

Each is driven by parameters you adjust on the fly: amplitude, speed, period, line thickness, sample count, and colour, plus a waveform inversion toggle. Nothing waits for a re-render, so the effect of every parameter is visible the instant you touch it.

Built on my framework

The whole thing runs on Lumina, my C++ application framework, which wraps OpenGL and an immediate-mode UI into a simple application shell. That's what keeps a tool like this small: the framework owns the window, the render loop, and the panels, so the project itself is almost entirely the waveform math and how it's drawn.

Where it's going

Frequency Visualizer is due for a major overhaul like the rest, so this is its current form, not the finished one.

Tech stack