Updated: Tue, 2014-08-19 07:15
LFO stands for Low-frequency oscillation. The name comes from the fact that it is an electronic signal with a low frequency, which oscillates to create a rhythmic pulse, or wobble. LFO's are common in synths and help vary their sound capabilities.
A number of popular effects are based around low frequency oscillation, namely chorus, vibrato, phasing, flanging and rotary speaker effects.
Updated: Tue, 2014-08-19 10:33
A MIDI keyboard is a piano-style keyboard used for sending MIDI data to a computer, or other MIDI devices. MIDI keyboards are a type of MIDI controller. You can think of a MIDI keyboard as a dummy keyboard. They don't produce any sounds themselves but rather, via MIDI data, control sounds in other devices, such as a synth on your computer or an external hardware synth.
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