Editing Subtractive synthesis (section)

===Source Sound===
First, an [[electronic oscillator]] produces a relatively complex [[waveform]] with audible [[overtone|overtones]]. Only one oscillator is necessary, and the number can vary widely. In this case, two oscillators are used:
{|
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| {{Listen | filename = subsynth-wave1.ogg | title = Waveform #1 | format = [[Ogg]] | pos = right | help = yes }}
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[[File:Waveform 1.jpg|alt=Closeup view of waveform in the audio sample.|thumb|Closeup [[oscilloscope]] of Waveform #1.]]
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| {{Listen | filename = subsynth-wave2.ogg | title = Waveform #2 | format = [[Ogg]] | pos = right | help = no }}
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[[File:Closeup oscilloscope of Waveform 2.jpg|alt=Closeup oscilloscope of Waveform #2.|thumb|Closeup oscilloscope of Waveform #2.]]
|}
[[Pulse-width modulation]] is applied to both waveforms to create a more complex tone with [[vibrato]]:
{|
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| {{Listen | filename = subsynth-wave1pwm.ogg | title = PWM waveform #1 | format = [[Ogg]] | pos = right | help = no }}
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[[File:Closeup of pulse-width modulated Waveform 1.jpg|alt=Closeup of pulse-width modulated Waveform 1.|thumb|Closeup of pulse-width modulated Waveform 1.]]
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| {{Listen | filename = subsynth-wave2pwm.ogg | title = PWM waveform #2 | format = [[Ogg]] | pos = right | help = no }}
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[[File:Closeup of pulse-width modulated Waveform 2.jpg|alt=Closeup of pulse-width modulated Waveform 2.|thumb|Closeup of pulse-width modulated Waveform 2.]]
|}

The pulse-width modulated sounds are now combined at equal volume. Combining them at different volumes would create different timbres. The result is a 2-second '''source sound''', which is ready for subtractive synthesis.
{| 
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| {{Listen | filename = subsynth-wavemix.ogg | title = Combined waveforms | format = [[Ogg]]}} 
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[[File:Combined waveforms and pulse-width modulation.jpg|alt=Combined waveforms and pulse-width modulation.|thumb|Combined waveforms and pulse-width modulation.]]
|}