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

Performance of digital modulation schemes, Hello, Please how do I compare p...

Hello, Please how do I compare performance of a digital modulation scheme with matlab?

Show capital asset pricing model, Q. Show Capital asset pricing model? ...

Q. Show Capital asset pricing model? This model was developed by the William F Sharpe ( 1990 Nobel prize winner in the economy ) and john linter in 1960. The model attempt to c

inverters- recifiers and inverters, Inverters Inverter is a device w...

Inverters Inverter is a device which  converts dc power into ac  power at desired output voltage and frequency. Inverters are used in  uninterruptible power  supply  hvdc  tra

What is program counter, Program counter holds the address of either the fi...

Program counter holds the address of either the first byte of the next instruction to be fetched for implementation or the address of the next byte of a multi byte instruction, whi

Octal number systems, Octal Number Systems Now the  question may  arise...

Octal Number Systems Now the  question may  arise in one mind  that why  to learn  octal  number  system when  neither  human  nor the  digital  systems  uses. It  hence it is

Find the inductor current and voltage, Q. The energy stored in a 2-µH induc...

Q. The energy stored in a 2-µH inductor is given by w L (t) = 9e -2t µJ for t ≥ 0. Find the inductor current and voltage at t = 1 s.

What are the types of write operations used in 8253, What are the different...

What are the different types of write operations used in 8253? There are two types of write operations in 8253 (1) Writing a control word register (2) Writing a count val

How typical dma controller can be interfaced to 8086/8085, Show how a typic...

Show how a typical DMA controller can be interfaced to an 8086/8085 based maximum mode system. For 8088 in maximum mode: The RQ/GT1 and RQ/GT0 pins are utilized to issue DMA

Insulation resistance, how can we increase insulation resistance of sheet

how can we increase insulation resistance of sheet

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