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
Q. Show the Decimal equivalent of a binary number? In binary numbers we have two digits 0 and 1 in addition they can also be signified as a string of these two-digits known as

Q. Illustrate Simple ALU Organisation? An ALU comprises circuits which perform data processing micro-operations. Though how are these ALU circuits used in conjunction of other


How the transaction that are programmed by the user can be protected? By executing an authority check.

Combinational/Sequential Logic design with Integrated Circuits (Dual in line package) Car wash concept with the following steps in a Combinational Logic Diagram: 1.    Start

Q. Explain about wildcard character in DOS? Sometimes you may like to list files having similar names. Let as suppose that these files are present in a root directory of drive

What is a microform? This is the collective term for all micro images kepted on a wide range of microfilm media, like roll film, fiche, aperture cards, strip or jackets.

Use tabs to bring some structure into your function body if(nPos > 1) then nRetrun = True else nRetrun = False end if

An SNMP integer whose value is 200 has to be transmitted. Show its representation in ASN.1 syntax. An ASN.1 transfer syntax describes how values of ASN.1 types are unambiguousl

what is er diagram