Credits

Ian Luck – BASS Audio Library Developer – http://www.un4seen.com
Olli Parviainen – Tempo/Pitch/Rate/BPM [SoundTouch v1.8.0] – http://www.surina.net/soundtouch
Robert Bristow-JohnsonD – BiQuad filters Cookbook – http://www.musicdsp.org/files/Audio-EQ-Cookbook.txt
Manu Webber – Peaking Equalizer is based on his C++ source code – http://www.un4seen.com/forum/?topic=1246.msg6484#msg6484
Aleksey Smoli – Auto Wah, Echo (some parts from 1st algorithm), Phaser, Chorus and Distortion – http://st.karelia.ru/~smlalx (offline)
Jezar at Dreampoint – Freeverb – http://www.dreampoint.co.uk (offline)
Stephan M. Bernsee – Pitch shifting using FFT [smbPitchShift v1.2] – http://blogs.zynaptiq.com/bernsee/pitch-shifting-using-the-ft/