Scrolling Spectrogram using OpenGL in C++

This is an adaptation of Anthony Agnone's Audio Visualization with OpenGL in C++ which is itself a rework of a real-time spectrogram based upon OpenGL, GLUT, and PortAudio. Original project: Real-time OpenGL spectrogram by Alex Barnett

The version created here is for a standalone raspberry pi 4 application that runs on top of Fedora 40 with pipewire audio. Various original features have been commented out. The real-time spectrum analyzer is being used for a continuous display of breath sounds.

Dependencies

*nix operating system with
libraries
- portaudio
- fftw
- opengl etc

sudo apt install -y
    cmake \
    libasound2-dev \
    portaudio19-dev \
    libfftw3-dev \
    libglu1-mesa-dev \
    freeglut3-dev \
    mesa-common-dev

Building

make build

# run with the following
build/opengl_spectrogram

Installing

make install

# run with the following
opengl_spectrogram

Helpers

# show info regarding audio devices recognized by the OS
device_info

See doc/ for Doxygen documentation of the source code.

Contributors