Triangle-Wave
A triangle-wave pedal is a great addition to anyone's pedalboard. It is useful for not just altering the speed of a note, but also changing its pitch. They are a great way to add a more authentic sound to your guitar. Particularly when you want to add a bit of extra flair to your playing. It utilizes a triangle waveform for its effect.
A triangle wave is a type of waveform that travels from top to bottom and back to the same point. This can be a great addition to your setups. As it makes your guitar sound bigger, deeper, with a bigger bottom end. This is perfect for those who want to pierce the depths of their sound with their playing. Or those who want to add more depth to their sound. What's great about this wave type is that it can be used in a variety of ways, and comes in at a low cost.
Sine-Wave
A Sine-Wave pedal is a monophonic (one-note) effect that produces a sweeping effect that is similar to that of a tremolo-equipped guitar. The effect is created by setting the amplitude of a sine wave to vary in proportion to the amplitude of the input signal, and then mixing these two signals to create the desired effect.
Sine wave, or trem-switching, effects give you a shimmering, metallic sweep to your guitar tone that's nothing short of spectacular. It's a simple effect that is intentionally different from other trem-switches out there, in that it does not produce a rhythmic effect like a regular pedal. Instead it produces a long, melodic "sine" wave. It's a cool, unique effect that has been used in various genres, from metal to pop.
Square-Wave
Square-wave pedals, also known as squares, started out as a source of odd, funky sounds for guitarists. But since the 80's they've become a staple in many music genres. This is due to their ability to create an array of tones, from subtle to all out raging. Most Square pedals can be divided into two categories: surf, where the pedal is a single square wave, or wave, where it has two square waves. Most splitter-type pedals are wave-type pedals, while most other types are single-square-wave-type pedals.
Phase-Shift
Phase-Shift tremolo pedals are great fun to play, but they can also be confusing to decipher. The concept behind a phase-shift is fairly simple-the idea is to shift the phase of a signal to the outside world.
It's what happens when you play a note on your guitar and as you go into your next note your guitar will automatically move in time with your note. This effect is always a bit unpredictable which is why it is not often used by professional musicians.
Volume Boost
Volume Boost pedals are a new and trendy type that have been around for a few years now. They are used to create effects, in which the volume of the output is changed on the fly in response to the speed of the input. Volume Boosts are powerful tools, capable of producing a wide range of effects, from that subtle tremolo sound to massive vibrato.