Explain the limiting the spectrum, Electrical Engineering

Assignment Help:

Explain the Limiting the Spectrum

This low-pass filter is known an anti-aliasing filter. These filters are originated at the input to most applications. Since they are required before the signal is sampled, they are approximately always analog filters. It is theoretically possible to make use of the DSP device to remove the aliasing, but this would need a high sample rate. Actually, this is rarely done as it would consume too much of the processing power of the DSP, which we need to carry out other tasks. The ideal anti-aliasing filter characteristics are displayed in the lower half of the above diagram. It is flat along with gain A over the pass band and zero at any other point.

An ideal filter would as well have a linear phase response. Variations from this ideal may have an important effect on performance. For instance, in control applications, a badly planed filter may mean that the system spends all of its time trying to compensate for the filter, rather than trying to keep a constant motor speed. In audio applications, a poor phase response can lead to harmonic distortion and degradation that is frequently audible. For audio applications, commercially available switched-capacitor filters are easy to use and offer a reasonably linear response.


Related Discussions:- Explain the limiting the spectrum

Find the voltage drops across the resistors, Consider the network shown in ...

Consider the network shown in Figure (a). (a) Find the voltage drops across the resistors and mark them with their polarities on the circuit diagram. (b) Check whether the KV

Sign flag - sub subtract instruction , Sign flag Since D 7  bit in ...

Sign flag Since D 7  bit in the  results is 0sign flag is reset. This also  shown that the results is positive.

Current trasnsformer, A 13.8 kV feed er circui t breaker has a 600:5 multir...

A 13.8 kV feed er circui t breaker has a 600:5 multira tio curr ent transform er with charact eristics as show n in Figure 5.11. Th e max - imum load on the feed er is 80 A pri mar

Find the total emf and armature current., Q.   In a 110V compound generator...

Q.   In a 110V compound generator, the armature, shunt and series winding resistance are 0.06?, 25? and 0.04? respectively. The load consists of 200 lamps each rated 55W, 110V conn

Use of speaker, Q. Use of Speaker? Speaker:Basically speaker is the rec...

Q. Use of Speaker? Speaker:Basically speaker is the receiver for telephone. Speaker converts electrical signals received from local loop to acoustical signals(sound waves) that

DC machine, importance of dummy coils and equalizer connections

importance of dummy coils and equalizer connections

Applications of hall effect, Applications of Hall Effect: (i)  To dete...

Applications of Hall Effect: (i)  To determine whether semiconductor is of n type or p type. (ii) To determine carrier concentration. (iii) Measurement of carrier mobili

Bias circuit requirements, Bias circuit requirements: Signal requirem...

Bias circuit requirements: Signal requirements for Class A amplifiers The Q-point is placed thus the transistor stays in active mode (does not shift to operation in the s

Common source drain and transfer characteristics of a jfet, Q. Draw the com...

Q. Draw the common source drain and transfer characteristics of a JFET. How are they useful? The graph below shows  variation of the drain current Id as a function of the drain

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd