The term Pitchwheel refers to two distinct concepts in music technology: the physical performance controller built into electronic keyboards, and a popular real-time audio plugin developed by QuikQuak.
Depending on your context, you are likely looking for information on one of the following: 1. The Physical Hardware Control (Pitch-Bend Wheel)
On synthesizers and MIDI keyboard controllers, a pitch wheel (or pitch-bend wheel) is a performance control used to smoothly vary the pitch of a note up or down.
Design & Mechanics: It is typically located on the far-left side of the keyboard. It is spring-loaded, meaning it automatically snaps back to its center “neutral” position when you release your hand.
Functionality: Moving the wheel upward raises the pitch, while moving it downward lowers the pitch. It sends 14-bit MIDI messages allowing for 16,384 distinct values to ensure fluid pitch shifts without artificial stepping.
Expressive Purpose: Musicians use it to emulate the expressive slides, glides, and bends naturally found on stringed instruments like guitars, or wind instruments like saxophones.
History: The Minimoog synthesizer, released in 1970, was the very first commercial synthesizer to feature this control wheel layout. 2. The Audio Plugin (QuikQuak Pitchwheel)
If you are looking at digital audio software, Pitchwheel by QuikQuak is a real-time pitch-shifting and timbre-modulating virtual effect unit (VST/AU).
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