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date: 14 August 2020

spectrum 

Source:
A Dictionary of Electronics and Electrical Engineering
Author(s):

Andrew Butterfield,

John Szymanski

The range of possible frequencies that a particular (electrical) signal can have. For example, the audio spectrum is generally considered to extend from 20 hertz to 20 kilohertz, so a given audio signal will be found in this range, and a given instrument will have its own spectrum of frequencies or ... ...

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