quickMFCC - Fast Mel-Frequency Cepstral Coefficients Library

Version 0.9 - 2 February 2024

quickMFCC is a C++20 library designed for efficiently computing Mel-Frequency Cepstral Coefficients (MFCCs). Leveraging modern C++ features, such as constexpr, the library achieves remarkable speed improvements compared to its predecessor, libMFCC. The implementation is approximately 20 times faster than original.

Key Features

• High Performance: QuickMFCC is optimized for speed by using look-up tables to complete most frequent computations at compile-time
• C++20 Features: Utilizing modern C++ features, including constexpr and constinit, to enhance computation speed and efficiency
• Ease of Use: This is a lightweight library with no dependencies except modern C++ compiler.

Performance Benchmark

On average, computing 13 coefficients using a Ryzen 5600H at 4 GHz gives following results:

• libMFCC: 8,192,429 nanoseconds (8 milliseconds)
• quickMFCC: 348,858 nanoseconds (0.33 milliseconds)

Files in this Distribution

• LICENSE.md: MIT License for using and redistributing quickMFCC.
• README.md: This file, providing an overview of the library and its features.
• quickmfcc.cpp: Implementation of the quickMFCC algorithm.
• quickmfcc.h: Header file for quickMFCC.
• example/CMakeLists.txt: CMake file for compiling example.cpp.
• example/demo.cpp: A sample demonstrating the usage of the quickMFCC algorithm.
• example/sample.dat: FFT data used for processing in the example.
• Sturm2010b.pdf: Reference document by Sturm et al.

Getting Started

Include quickmfcc.h header file where you want and compile it with std=c++20 or higher. Basic demo is provided in the /example subfolder.