liangqibin / pafx

Python Audio Effects

PAFX

Inroduction

PAFX stands for Python Audio Effects. This library includes implemenation of some audio effects commonly used, and all written in Python.

Usage

Please check the file test_pafx.py for examples. On audio clip was taken from CD of the book Mixing Audio for testing.

Features

• Stereo Signal
• Biquad IIR Filters
• Comb Filter
• Equalizer
• Reverb
• Delay Line
• Chorus
• Echo
• Fade-in/Fade-out
• Flanger
• Vibrato
• Tremolo
• Tempo Scaling
• Pitch Shift
• Phaser
• Wah-Wah
• Compressor
• Limiter
• Noise Gates and Expander
• Multi-band compression/expansion/limiting
• Distortion

Reference

• Zölzer U, Amatriain X, Arfib D, et al. DAFX-Digital audio effects. John Wiley & Sons, 2002.
• Reiss J D, McPherson A. Audio effects: theory, implementation and application. CRC Press, 2014.
• Izhaki R. Mixing audio: concepts, practices, and tools. Routledge, 2017.
• SoX - Sound eXchange, http://sox.sourceforge.net/
• Freeverb3, http://www.nongnu.org/freeverb3/