wave_synthesis

Wave Generator

A simple real-time wave generator written in C using SDL2 and SDL_ttf. It allows you to play and visualize basic waveforms (sine, square, triangle, and sawtooth) with adjustable frequency and amplitude.

Features

• Generates the following waveforms:
  • Sine wave
  • Square wave
  • Triangle wave
  • Saw wave
• Real-time audio playback via SDL
• Adjustable frequency and amplitude using keyboard
• Displays current waveform, frequency, and amplitude on the screen

Controls

Key	Action
1	Select Sine wave
2	Select Square wave
3	Select Triangle wave
4	Select Saw wave
Up	Increase frequency by 50 Hz
Down	Decrease frequency by 50 Hz
Right	Increase amplitude by 0.05
Left	Decrease amplitude by 0.05
Escape	Exit program

Requirements

• SDL2
• SDL2_ttf
• C compiler (GCC/Clang)

On macOS:

You can install SDL2 via Homebrew:

brew install sdl2 sdl2_ttf

On Linux:

sudo apt install libsdl2-dev libsdl2-ttf-dev

Build instructions

This project contains a Makefile. To build the program, simply run:

make        

This will compile the code and produce the executable (e.g., wave_generator). To run the program:

./wave_generator       

Or u can build and run the programm with one command:

make run

To remove compiled files and start fresh, you can use:

make clean

Notes

• The program uses a fixed sample rate of 44100 Hz.

• The font path is currently set to a macOS system font (/System/Library/Fonts/SFNS.ttf). Update the path if you run on another OS.