Physics
The law of conservation of energy states that

Energy can neither be created or destroyed
Energy can neither be created nor destroyed
Energy can either be created nor destroyed
Energy can either be created or destroyed

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Physics
Analog synthesis refers to a technology based on

Placing brief digital recordings of live sounds under the control of a synthesizer keyboard.
Representing data in terms of measurable physical quantities.
Representing physical quantities as numbers.
Interfacing synthesizer equipment.

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