Analog-to-digital conversion process, Computer Engineering

Assignment Help:

A stationary random displacement signal was digitised at 64 samples a second and analysed to obtain an auto-spectral density.  The signal was calibrated in mm units.  The frame size for the Fast Fourier Transform (FFT) was 2048 data values.  Fifty frames were averaged to obtain the final result but over-lap averaging of 25% was used.  Due to a malfunction the displacement transducer output included a very large      50 Hz electrical noise component.  This was not completely removed by the anti-aliasing filters prior to the analog-to-digital conversion process.

(a) What are the units of the y-axis of the auto-spectral density if the x-axis is in Hz?

(b) What approximately would be the cut-off frequency of the anti-aliasing filters?                      

(c)  What is the bandwidth of the analysis?                                                   

(d) What is the total length of signal analysed to obtain the auto-spectral density?

(e) At what frequency would the 50 Hz noise signal appear on the auto-spectral density?

(f) How would you obtain the auto-spectral density for the velocity from the auto-spectral density of the displacement?                                                        


Related Discussions:- Analog-to-digital conversion process

Explain vector-vector instructions, Vector-Vector Instructions In this...

Vector-Vector Instructions In this category, vector operands are fetched from vector register and accumulated in another vector register. These instructions are indicated with

What are the four factors of open source software, What are the four signif...

What are the four significant factors that led to the development of open source software? 1. To diminish the high control value of the Proprietary Software 2. To avoid disc

Define how ptrace is used by debuggers, State how Shared Memory is used for...

State how Shared Memory is used for inter process communication. Define how ptrace is used by debuggers.  What are modules? Explain how data mapping takes place among modules

How call processing takes place, How call processing takes place? Fund...

How call processing takes place? Fundamental Call Procedure: Fig. demonstrates a simplification diagram exemplifying how two telephone sets (as subscribers) are interconnecte

Building is into our operational processes, Building IS into our operationa...

Building IS into our operational processes - Information System Although information systems are becoming increasingly prevalent they are not always the correct solution to ev

#dbms., #example of cascading rollback#

#example of cascading rollback#

Describe the micro programmed control unit in detail, Describe the micro pr...

Describe the micro programmed control unit in detail. A micro programmed control unit is built around a storage unit is known as a control store where all the control signals a

What do you understand by client-server architecture, Question: (a) (i...

Question: (a) (i) Explain what do you understand by Client/server architecture? (ii) List and briefly describe 3 types of Client/server architecture. (b) The most impo

Authentication verses firewall, How does an authentication system be differ...

How does an authentication system be different from a firewall into functioning? Authentication verses firewall User Authentication and Authorization A significan

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