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 average power absorbed by each element, Q. Let v(t) = V max cos ω...

Q. Let v(t) = V max cos ωt be applied to (a) a pure resistor, (b) a pure capacitor (with zero initial capacitor voltage, and (c) a pure inductor (with zero initial inductor curren

Weighted-resistor converter, Q. WEIGHTED-RESISTOR CONVERTER? Figure sho...

Q. WEIGHTED-RESISTOR CONVERTER? Figure shows a 4-bit weighted-resistor D/A converter which includes a reference voltage source, a set of four electronically controlled switches

Motor, operation of induction motor

operation of induction motor

Power flow analysis, Ask question #Minimum 10] In the system shown in Fig...

Ask question #Minimum 10] In the system shown in Figure 4-1, the rated voltage of the line is 110kv, and the conductors are all LGJ-120 type. The parameters are: r1=0.21O/km,x1=0

List the different types of flags, List the different types of flags affect...

List the different types of flags affected by the arithmetic and logic operations. Carry flag, Auxiliary carry flag , Parity flag, Sign flag, Zero flag

Bode plot phase ad gain margin, Using Bode plot calculate (a) Phase margin ...

Using Bode plot calculate (a) Phase margin (b) Gain margin (c) Stability of closed loop system. The open transfer function of the system is t=30/(s+2)/(s+3)Using Bode plot calcula

Magnetic circuits, develop and explain series and parallel magnetic circuit...

develop and explain series and parallel magnetic circuits?

Design a multiplexer and anomalous signals, 1. The size of the multiplexer ...

1. The size of the multiplexer used to implement a truth table can be cut in half (e.g. 4 inputs instead of 8) if one of the variables is used as an input instead of being connecte

Newton raphson , hi can you help with newton raphson?

hi can you help with newton raphson?

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