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Which of the following is an example of physical device which adds the signals?

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in Signals and Systems by (1.2m points)
Which of the following is an example of physical device which adds the signals?

(a) Radio

(b) Audio mixer

(c) Frequency divider

(d) Subtractor

I got this question in semester exam.

I need to ask this question from Basic Operations on Signals in chapter Signals and Systems Basics of Signals and Systems

1 Answer

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by (42.1k points)
Correct option is (b) Audio mixer

The explanation: Audio mixer is a device which combines music and voice signals. It is given by

Y (t) = x1 (t) + x2 (t).

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