[Sambit P]

Oh right. So this mainly happens because any frequency above the Nyquist frequency (NyF + F) behaves exactly like (NyF – F) and multiplying that with the signal basically gives the same value.
Makes sense. Thanks a lot!

[Sambit P]

Ah, so as I understand, the first N/2 sample represent the real components (cosine values) and the last N/2 components represent the imaginary components (sine values). The mirroring happens because the cosine and sine values have a difference in phase of 90 degrees.

Is my understanding correct? Or have I missed something?

[Sambit P]

I understand that if the signal is a complex signal, this does not happen. The mirroring happens only if the signal has either a real or an imaginary component.
But I am finding it hard to understand the physical intuition of the mirroring.

[Sambit P]

Uploading plots of the signal I used and the DFT I got from it.

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