Editing Effects unit (section)

===Time-based===
[[File:Maestro Echoplex EP-2.jpg|right|thumb|A vintage [[Echoplex]] EP-2 delay effect]]
{{listen
|filename=flute-delay.ogg
|title=Delay effect
|description=A flute before and after delay|format=[[Ogg]]
|filename2=Reverberation_effect.ogg
|title2=Reverberation effect
|description2=Reverb with increasingly longer delay
}}
Time-based effects delay the sound signal, add reverb or echos, or enable musicians to record and play back [[Loop (music)|loops]].

''[[Delay (audio effect)|Delay/echo]]'': Delay/echo units produce an echo effect by adding a duplicate to the original signal at a slight time delay. The effect can either be a single echo (called a ''slap'' or ''slapback''), or multiple echos. A well-known use of delay is the lead guitar in the [[U2]] song "[[Where the Streets Have No Name]]", and also the opening riff of "[[Welcome to the Jungle]]" by [[Guns N' Roses]].<ref>Hubner, David; Runstein, Robert (2009). [https://books.google.com/books?id=W9U7A-rSXtEC ''Modern Recording Techniques''], Focal Press. p. 508.</ref>

Delay effects: [[Boss Corporation|Boss]] DD-3 Digital Delay, [[MXR]] Carbon Copy, [[Electro-Harmonix]] Deluxe Memory Man, [[Line 6 DL4]], [[Roland RE-201]].<!--This article has often been used to advertise. List only products that 1.) have Wikipedia articles and 2. ) have been well known for a number of years and used by influential musicians--><!--[[User:Kvng/RTH]]-->

''Looper pedal'': A looper pedal or "phrase looper" allows a performer to record and later replay a phrase, [[riff]] or passage from a song. Loops can be created on the spot during a performance ([[live looping]]) or they can be pre-recorded. By using a looper pedal, a singer-guitarist in a [[one person band]] can play the backing chords (or riffs) to a song, loop them with the pedal, and then sing and do a [[guitar solo]] over the chords. Some units allow a performer to layer multiple loops, enabling the performer to create the effect of a full band.<ref>{{cite web|title = Starting Point|url = http://loopermusic.com/starting-point|website = LooperMusic.com|access-date = 28 December 2015}}</ref> The first loop effects were created with [[reel-to-reel tape]] using a [[tape loop]]. High-end boutique tape loop effects are still used by some studio producers who want a vintage sound. Digital loop effects recreate this effect using an electronic memory.<ref>{{Cite book|last=Hopper|first=Jessica|title=The Girl's Guide to Rocking Out|url=https://books.google.com/books?id=RwzQe_h-OjQC|year=2009|publisher=Workman Publishing|page=34|isbn=9780761151418}}</ref><!--This article has often been used to advertise. List only products that 1.) have Wikipedia articles and 2. ) have been well known for a number of years and used by influential musicians-->

[[File:Reverb-4-2.jpg|thumb|left|Folded line spring reverberation]]
''[[Reverb effect|Reverb]]'': Reverb units simulate the spacious sounds produced naturally in a huge stone cathedral (or other [[acoustic space]] such as a hall or room). This is done by creating a large number of echoes that gradually fade away in volume or "decay". One early technique for creating a reverb effect was to send an amplified signal of the music via a speaker to another room with reflective surfaces, such as a tile bathroom, and then record the natural reverberations that were produced. A plate reverb system uses an electromechanical [[transducer]] to create vibrations in a plate of metal. [[Spring reverb]] systems, which are often used in guitar amplifiers, use a transducer to create vibrations in a spring. Digital reverb effects use various [[Digital signal processing|signal processing]] [[algorithm]]s to create the reverb effect, often by using multiple feedback [[Delay (audio effect)|delay circuits]]. [[Rockabilly]] and [[surf guitar]] are two genres that make heavy use of reverb.<ref>Hubner, D; Runstein, R (2009). [https://books.google.com/books?id=W9U7A-rSXtEC ''Modern Recording Techniques''], Focal Press. p. 508.</ref>

Reverb effects: [[Electro-Harmonix]] Holy Grail, [[Fender Reverb Unit]].<!--This article has often been used to advertise. List only products that 1.) have Wikipedia articles and 2. ) have been well known for a number of years and used by influential musicians and which have WP articles-->