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. Example to show directory in doc? Like a file name, the directory name may also have up to eight alpha-numeric characters. The directory name can also have an extension

Microprocessor have ROM chip because it have instructions to implement data. It have the monitor program which not only include implementation instruction but also interfacing

Q. Evaluate Bandwidth of disk drive? Bandwidth:  Bandwidth can be measured in bytes per second. Sustained bandwidth is the average data rate at the time of a large transfer w

Replacement policy: On a particular cache miss we require to evict a line to build room for the new line "In an A-way set associative cache, we have A option of which block

Define Refresh Circuits? It is a circuit which make sure that the contents of a DRAM are maintained when every row of cells are accessed periodically.

Explain Clone process. A clone process is generated using primitive type clone by duplicating its parent process. However unlike traditional processes it might be share its con

Write a class encapsulating the concept of a circle? I have been working on this program for awhile and this is all I have so far... What are my flaws in the program besides not ha

State and prove Demorgan's second theorem   Proof: Demorgan's second theorem   = A‾ + B‾ The two sides of the equation here   = A‾ + B‾ is represented through the logic d

An 8-bit successive approximation ADC has a resolution of 20mV.  What will be its digital output for an analog input of 2.17V? Ans: Given data Resolution =20mv Analog input =2.

Determine about the Verilog Task - Tasks are capable of enabling a function as well as enabling other versions of a Task. - Tasks also run with a zero simulation however the