Editing Low-frequency oscillation (section)

==Uses==
{{listen
|filename=LFOtoVolume-Tremolo.ogg
|title=Tremolo
|description=A low-frequency oscillator modulating volume to create a tremolo effect.
|filename2=Lfo-cutoff-frequency-ripple.ogg
|title2=Ripple Effect
|description2=A high-rate low-frequency oscillator modulating cutoff frequency to create a ripple effect.
|filename3=Lfo-cutoff-frequency-wobble-bass.ogg
|title3=Wobble Bass
|description3=A low-frequency oscillator modulating cutoff frequency to create a wobble bass effect.
}}
An LFO can be routed to control, for example, the frequency of the audio oscillator, its [[phase (waves)|phase]], stereo panning, [[audio filter|filter]] frequency, or amplification. When routed to control pitch, an LFO creates [[vibrato]]. When an LFO modulates [[amplitude]] (volume), it creates [[tremolo]]. On most synthesizers and sound modules, LFOs feature several controllable parameters, which often include a variety of different [[waveform]]s, a [[frequency|rate]] control, routing options (as described above), a [[tempo]] [[synchronization|sync]] feature, and an option to control how much the LFO will modulate the audio signal. LFOs can also be summed and set to different frequencies to create continuously changing slow moving waveforms, and when linked to multiple parameters of a sound, can give the impression that the sound is "alive".

Electronic musicians use LFO for a variety of applications. They may be used to add simple vibrato or tremolo to a melody, or for more complex applications such as triggering [[noise gate|gate]] [[Envelope (music)|envelopes]], or controlling the rate of [[arpeggio|arpeggiation]].

Differences between LFO rates also account for a number of commonly heard effects in modern music. A very low rate can be used to modulate a [[electronic filter|filter]]'s cutoff frequency, thereby providing the characteristic gradual sensation of the sound becoming clearer or closer to the listener. Alternatively, a high rate can be used for bizarre 'rippling' sound effects (indeed, another important use of LFO is for various [[sound effect]]s used in films). [[Dubstep]] and [[drum and bass]] are forms of electronic music that employ frequent use of LFOs, often synchronized to the [[tempo]] of the track, for bass sounds that have a [[Dubstep#Wobble bass|"wobble"]] effect. For example, by modulating the [[cutoff frequency]] of a [[low-pass filter]] to create a distinctive opening-and-closing effect. Due to the popularization of these genres, the LFO wobble is now being found in other forms of [[electronic dance music]] such as [[house music]]. LFO is commonly used in [[future bass]] music to enhance synthesisers, along with side-chain.