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 naming convention scripts, Explanation:- A script within Rationa...

Explanation:- A script within Rational Robot is a file that haves a sequence of SQABasic code. The extension of the file is always ".REC". Syntax [FEATURE] + "_" + [FUNCTION

Why are high-speed memories required, Q. Why are high-speed memories requir...

Q. Why are high-speed memories required? Is the main memory not a high-speed memory? The answer to second question is absolutely 'No' though why so? Then if memories are slowe

What is thread, What is Thread? A thread, sometimes termed a lightweigh...

What is Thread? A thread, sometimes termed a lightweight process (LWP), is a fundamental unit of CPU utilization; this comprises a thread ID, a register set, a program counter

Explain star topology, Explain Star topology. A network utilizes a star...

Explain Star topology. A network utilizes a star topology if each computer attach to a central point. The following figure demonstrates the concept: Star Topology

Describe distributed object model, Question 1 Give a brief explanation on m...

Question 1 Give a brief explanation on message oriented middleware Question 2 Describe Distributed object model Question 3 Explain File systems in a distributed computing Env

Arbitrary categorisation - learning decision trees, Arbitrary categorisatio...

Arbitrary categorisation - learning decision trees: Through visualising  a set of boxes with some balls in. There if all the balls were in a single box so this would be nicely

Types of e-commerce , Types E-commerce generally based on advertising, sell...

Types E-commerce generally based on advertising, selling, marketing and buying, but due to the differences in needs, e-commerce has been classified according to the parties of the

Develop a regular expression for integer and identifier, Develop a regular ...

Develop a regular expression for Integer and Identifier (i) A regular expression for integer is [+ | -] (d)+ (ii) A regular expression for identifier is l(l | d)*

Pushbutton switches, Use the input capture to control the digital clock.  I...

Use the input capture to control the digital clock.  In this part, there will be two switches to control the clock, one is for starting the clock and one is for stopping the clock.

Carry look-ahead adder and booth''s algorithm, Describe carry look-ahead ad...

Describe carry look-ahead adder? Ans: The input carry required by a stage is directly computed from carry signals obtained from all of the preceding stages i-1,i-2,.....0, rat

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