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

Cdma transmission model, The RAKE receiver exploits multipath channel chara...

The RAKE receiver exploits multipath channel characteristics and scrambling codes with good cross-correlation properties to realize a maximum ratio diversity combiner. Multipath pr

The maximum power transfer theorem, The maximum power transfer theorem stat...

The maximum power transfer theorem states: 'A load will receive maximum power from a linear bilateral dc network when its total resistive value equal to the Thevenin's or Norto

Explain about subscriber loop system, Q. Explain about Subscriber Loop Syst...

Q. Explain about Subscriber Loop System? Subscriber Loop System:Each subscriber in a telephone network is connected normally to the nearest switching office by a dedicated pair

Determine the load voltage and the armature current, Q. Two shunt generator...

Q. Two shunt generators operate in parallel to supply a total load current of 3000 A. Each machine has an armature resistance of 0.05and a field resistance of 100. If the generat

What are the two modes of operations present in 8086, What are the two mode...

What are the two modes of operations present in 8086? i. Minimum mode (or) Uniprocessor system ii. Maximum mode (or) Multiprocessor system

Fourier deries, how to compute the fourier series expansion of a rectangula...

how to compute the fourier series expansion of a rectangular pulse train

Explain basic working of integrators, Q. Explain basic working of Integrato...

Q. Explain basic working of Integrators? Figure shows a noninverting integrator, which can be seen to be a negative impedance converter added with a resistor and a capacitor. N

Estimate conversion time of counter-controlled a/d converter, Q. An 8-bit A...

Q. An 8-bit A/D converter is driven by a 1-MHz clock. Estimate the maximum conversion time if: (a) It is a counter-controlled A/D converter. (b) It is a successive-approximat

Find the input resistance and output resistance, Quite often an amplifier i...

Quite often an amplifier is used as a component of an amplifier circuit. Consider the amplifier circuit shown in Figure, which contains an amplifier block as an internal component.

Describing the steady state effect , Select the response describing the ste...

Select the response describing the steady state effect of increasing the air gap for otherwise identical devices, one operating with constant DC voltage excitation and one with con

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