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Define Spectrum of Real Signals?
In the real world, we rarely come throughout a pure sine wave. Typical signals have a wide spectrum as displayed in the above diagram. Information above or below a fixed frequency or amplitude is usually considered surplus to requirements. For instance, hi-fi manufacturers assume that 20kHz is the highest frequency that the ear can detect.
Assuming that fm is the maximum frequency of interest in a signal, after that we would like to sample at the Nyquist Rate, that is at fs = 2fm (the sampling frequency = twice the maximum frequency). If we go ahead and sample at 2fm, we get a spectrum as shown in the top diagram. The bands overlap and we generate aliasing in the output signal. To prevent this, we must first make use of a low-pass filter on the input signal to eliminate any frequency components above fm.
can you please briefly explain about significance of the word direction in vectors with some valid points
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Connection of Shunt Capacitors at 11 kV Substations 11 kV automatic switched capacitor banks are installed on bus of 33 or 66 kV substations. This has the facility that the re
Whose principle or law states that each point on a wave front may be considered a new wave source? Is it: w) Snell's Law x) Huygen's Principle y) Young's Law z)
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user defined function
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dear sir, when i am going to simulate my model in matlab i am getting the following error : the derived input for the integrator is inf or nan at time xxxxx. try to reduce the step
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