The Gaborator

The Gaborator is a C++ library that generates spectrograms for the visualization and analysis of audio signals. It supports constant-Q, constant-bandwidth and mel-frequency spectrograms, as well as a fast and accurate inverse transformation of the spectrogram coefficients back into audio for spectral effects and editing.

The Gaborator is compatible with C++ versions from C++11 through C++20 and beyond. It has been tested on macOS, iOS, Linux, NetBSD, FreeBSD, and OpenBSD, on Intel x86_64 and ARM processors.

The Gaborator is open source under the GNU Affero General Public License, version 3, and is also available for commercial licensing. See the file LICENSE for details.

Example Code

The following examples demonstrate the use of the library in various scenarios. They are presented in a "literate programming" style, where the code is embedded in the commentary rather than the other way around. Concatenating the code fragments in each example yields a complete C++ program, which can also be found as a .cc file in the examples/ directory.

• Example 1: Rendering a Spectrogram Image
• Example 2: Frequency-Domain Filtering
• Example 3: Streaming
• Example 4: Measuring the Signal-to-Noise Ratio
• Example 5: Synthesis from Scratch

API Reference

The following documents define the library API.

• API Introduction
• Spectrum analysis and synthesis: gaborator.h
• Spectrogram rendering: render.h

How it Works

The following document outlines the operation of the library.

• Overview of Operation

FAQ

• Is it real-time?

Release Notes

• Version 2.1

Contact

Email questions and bug reports to the author at info@gaborator.com.