Editing Subtractive synthesis (section)

===Subtractive Synthesis===
The combined wave is passed through a [[voltage-controlled amplifier]] connected to an [[Envelope_(music)#ADSR|envelope generator]]. The parameters of the sound's envelope (attack, decay, sustain and release) are manipulated to change its sound. In this case, the decay is vastly increased, sustain is reduced, and the release shortened. The resulting sound is audible for half as long as the source sound:
{|
|- 
| {{Listen | filename = subsynth-mixenv.ogg | title = Enveloped sound | format = [[Ogg]] | pos = right | help = no }}
||
[[File:Enveloped waveform.jpg|alt=Enveloped waveform.|thumb|Enveloped waveform.]]
|}

With its new envelope, the sound is run through a [[low-pass filter]], which reduces the volume of higher overtones:
{|
|- 
| {{Listen | filename = subsynth-nomodfilter.ogg | title = Low-passed sound | format = [[Ogg]] | pos = right | help = no }}
||
[[File:Low-pass filtered waveform.jpg|alt=Low-pass filtered waveform.|thumb|Closeup of low-pass filtered waveform.]]
|}

To better emulate the sound of a plucked string, the filter's [[cutoff frequency]] is lowered.
{|
|- 
| {{Listen | filename = subsynth-modfilter.ogg | title = Final sound | format = [[Ogg]] | pos = right | help = no }}
||
[[File:Final waveform.jpg|alt=Final waveform|thumb|Closeup of final waveform]]
|-
| {{Listen | filename = subsynth-arpeggios.ogg | title = Some arpeggios | format = [[Ogg]] | pos = right | help = no }}
|}