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What is a line spectrum?

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in Signals and Systems by (1.2m points)
What is a line spectrum?

(a) Plot showing magnitudes of waveforms are called line spectrum

(b) Plot showing each of harmonic amplitudes in the wave is called line spectrum

(c) Plot showing each of harmonic amplitudes in the wave is called line spectrum

(d) Plot showing each of harmonic amplitudes called line spectrum

I had been asked this question during an online interview.

My question comes from Fourier Series & Coefficients topic in division Fourier Series of Signals and Systems

1 Answer

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Right option is (b) Plot showing each of harmonic amplitudes in the wave is called line spectrum

Easiest explanation: The plot showing each of harmonic amplitudes in the wave is called line spectrum. The line rapidly decreases for waves with rapidly convergent series.

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