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

Please check the filetest_pafx.py for examples. On audio clip was taken from CD of the bookMixing Audio for testing.

• 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

• 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/