Frequency spectrum of a signal is the range of frequencies contained by a signal . For example, a square wave is shown in Fig. 3.5A. It can be represented by a series of sine waves, S(t) = 4A/π sin(2πft) + 4A/3π sin(2π(3f)t) + 4A/5π sin(2π(5f)t + …)
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The signal spectrum describes a signal’s magnitude and phase characteristics as a function of frequency . The system spectrum describes how the system changes signal magnitude and phase as a function of frequency.
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The phase spectrum specifies the phase of signal components as a function of . component frequency . This phase is measured with respect to a cosine reference.
Read moreWhat is frequency spectrum analysis?
In theory, Fourier theorem states that a signal is composed of a number of sinusoidal signals. Analyzing the amplitude, frequency, and phase of these sinusoidal signals is referred to as the frequency spectrum analysis of the signal.
Read moreWhat is the spectrum of a function?
What is a Spectrum? • A signal is a function of time which can be represented by a series of sinusoidal functions or sinusoidal components . • These sinusoidal components have different frequencies, different amplitudes, and different phases.
Read moreWhat is amplitude spectrum?
amplitude spectrum specifies the amplitude of signal components as a function of component . frequency . The phase spectrum specifies the phase of signal components as a function of. component frequency. This phase is measured with respect to a cosine reference.
Read moreWhat is amplitude frequency spectrum?
Frequency Domain The amplitude spectrum simply gives amplitude at each frequency . The phase spectrum simply gives the phase at each frequency (Figure 2.20). Figure 2.20. (a) Amplitude spectra.
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