Raylib Synth & Looper

A simple real-time software synthesizer with looper functionality written in C using raylib and stb_ds.h.

Features

• Sine-Wave Synthesizer: Real-time polyphonic sound generation.
• MIDI-Style Looper: Records Note-On and Note-Off events quantized to musical grids and plays them back seamlessly in a loop.
• Visual Feedback: Bar timeline, metronome indicator, and state status colors (Replay, Waiting, Record).

Requirements

Before building the project, make sure you have the following tools and dependencies installed on your system:

• C Compiler: gcc or clang (C99 support or newer)
• Build System: CMake (version 3.11 or higher) and make (or ninja)
• Raylib Dependencies (Arch Linux): Install base-devel, cmake, and the required X11, OpenGL, and ALSA/PulseAudio development packages:

  sudo pacman -S base-devel cmake raylib libx11 libxft libxinerama libxcursor libxi alsa-lib

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Quick Start

1. Clone the repository

git clone [https://github.com/toxypiks/raylib_synth_example.git](https://github.com/toxypiks/raylib_synth_example.git)
cd raylib_synth_example

2. Build the project

mkdir build
cd build
cmake ..
make

3. Run the application

./main

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Controls

• Keyboard (Notes): Z, S, X, D, C, V, G, B, H, N, J, M, , (Semitones from C to C')
• Spacebar:
  • In Replay Mode: Switches to Waiting until end of bar (clears old recordings and waits for the next measure to start recording).
  • In Record Mode: Stops recording and switches back to Replay Mode (loops the recorded pattern).