PitchChange as the name
suggests is a simple and free VST PlugIn for Windows
Hosts. It provides the possibility to change the
overall pitch of one input stream up to +/- 50 %,
using a vertical slider. On the bottom of the slider
the applied pitch change value in percentage is
shown. The employed algorithm is the freely under
the Wide Open License (WOL) distributed high-quality
pitch scaling algorithm smbPitchShift in version
1.2, provided by Stephan M. Bernsee at his website
www.dspdimension.com. No modifications to the
algorithm were applied, the software routine are
implemented as it is. The pitch change slider is
set initially to 100 %.
A 2nd slider "Gain"
changes the volume of the input stream to 0 - 200 %
and is set by default to 100 %. A 3rd slider "Phaser"
applies a phasing effect. The underlying algorithm
is taken as it is from the website www.musicdsp.org
and provided by Ross Bencina, the developer of the
audio sequencer Audio Mulch, available from his
website www.audiomulch.com. The phaser effect
apparently produces artifacts despite not any change
to the source code. Therefore the default setting of
the phaser effect is set to zero.