Analog-to-digital conversion process, Computer Engineering

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?                                                        

Posted Date: 3/13/2013 4:10:21 AM | Location : United States







Related Discussions:- Analog-to-digital conversion process, Assignment Help, Ask Question on Analog-to-digital conversion process, Get Answer, Expert's Help, Analog-to-digital conversion process Discussions

Write discussion on Analog-to-digital conversion process
Your posts are moderated
Related Questions
Design a generalization-specialization hierarchy for a motor vehicle sales company. The company sells motorcyles,passenger cars,vans,and buses.justify your placement of attributes

Sometimes you may need to run scripts which have plotting commands without displaying the plots and without going into the script to comment out the commands. An example: if you're

The combinational circuits employ the comparators for comparing the numbers and storing them on the basis of maximum and minimum functions. Likewise in the interconnection networks

Q. Process of An e-mail transfer across the Internet? When you open your mail client to read your e-mail, this is what normally happens: 1. Mail client (Netscape Mail, Micro

Q. Perform division in binary showing contents of accumulator, B register and Y register during each step. (Accumulator, B, Y are 5-bit registers) 13 / 2

Conjunctive Normal Form -artificial intelligence : For the resolution law to determine two sentences, they should both be in a normalized format known as conjunctive normal fo

Processor-Memory Interconnection Network (PMIN) This is a switch that joined various processors to different memory modules. Connecting every processor to each memory module in

Question : (a) What are the main aspects that should be considered when dealing with green screen? (b) Explain clearly how these video effects alters a video using an illust

How the temperature effecting the delays in a chip The delays are directly proportional to the temperature. As the temperature enhances the delays are enhances and chip wil

A full binary tree with 'n' non-leaf nodes have  2n+l nodes.