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Describe how we can subtract information to produce sound.

What is the question?What is a performance feature of subtractive synthesis?
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OK	Value	Feedback
	Subtractive synthesis is often more expensive than additive synthesis for a computer to calculate.	The opposite is true.
	Subtractive synthesis is often cheaper than additive synthesis for a computer to calculate.	Correct!
	Subtractive synthesis requires no calculation.	This just isn't true of anything on a computer.
	Subtractive synthesis is often about the same than additive synthesis for a computer to calculate.	There is a difference...

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