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Most biomedical signals of practical interest can be decomposed into a sum of sinusoidal signal components. For the class of periodic signals, such a decomposition is called a _______ series.

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Most biomedical signals of practical interest can be decomposed into a sum of sinusoidal signal components. For the class of periodic signals, such a decomposition is called a _______ series.

(a) fourier

(b) discontinuous

(c) continuous

(d) frequency

I had been asked this question during an online exam.

Question is from The Main Amplifier and Driver Stage in portion Recording System of Biomedical Instrumentation

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Correct answer is (a) fourier

For explanation I would say: It is called a Fourier series. The term spectrum is used when referring to the frequency content of a signal. The process of obtaining the spectrum of a given signal using the basic mathematical tools is known as a frequency or spectral analysis.

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