Pitch shifting is a sound recording technique in which the original pitch of a sound is raised or lowered. Effects units that raise or lower pitch by a pre-designated musical interval (transposition) are called pitch shifters.
POG octave effect
An effects unit, effects processor, or effects pedal is an electronic device that alters the sound of a musical instrument or other audio source through audio signal processing.
A pedalboard allows a performer to create a ready-to-use chain of multiple pedals to achieve certain types of sounds. Signal chain order: tuner, compressor, octave generator, wah-wah pedal, overdrive, distortion, fuzz, EQ and tremolo.
Various type of guitar and bass effect pedals.
An example of an effects chain. From the input [right] to the output [left]: Tuner [upper right] (tc electronic Polytune) ⇒ Wah pedal [lower right] (Morley Bad Horsie Wah) ⇒ Overdrives/distortion [lower row] (Rocktron Short Timer Delay → Danelectro CTO-1 Transparent Overdrive → Boss HM-2 → Boss MT-2) ⇒ Modulations/delay [upper row] (Digitech Hyper Phase → Danelectro CV-1 Vibe → Danelectro CT Tremolo → Digitech Hyper Delay)
Rackmounted effects in road cases. These road cases have the front protective panels removed so the units can be operated. The protective panels are put back on and latched shut to protect the effects during transportation.
![An example of an effects chain. From the input [right] to the output [left]: Tuner [upper right] (tc electronic Polytune) ⇒ Wah pedal [lower right] (M](https://upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Anders_pearson%27s_pedalboard_%282010-03-20_11.07.50%29.jpg/640px-Anders_pearson%27s_pedalboard_%282010-03-20_11.07.50%29.jpg)
