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De-emphasis circuit is used in circuit before detection.

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De-emphasis circuit is used in circuit before detection.

(a) True

(b) False

I have been asked this question in an interview for internship.

This interesting question is from Superhetrodyne Receiver in section Receivers & Transducers of Analog Communications

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The correct choice is (b) False

To explain I would say: De-emphasis means attenuating those frequencies by the amount by which they are boosted. De-emphasis is done at the receiver end i.e. it is used after detection. Detection refers to demodulation through which the original message signal is retrieved.

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