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5CCE2SAS – Signals and Systems

You will be required to undertake this alternative assessment in place of your deferred coursework

component or as reassessment for your failed coursework attempt. Please note, this also includes in class tests which are scheduled within term outside of the examination window.

This alternative assessment for 5CCE2SAS (2022/23 academic year) is designed to replace the outstanding

components below:

Coursework 1 and 2 (in total 30%)

Alternative Assessment:

Individual Project

The Data to be analysed is accessible atResitSignal.

Notice: is a sound signal that sweeps many frequencies and therefore before playing it, you need to bring the volume down first. It starts slow and get sharper.

The sampling frequency is contained within the data source.

The overall aim is to show that the frequency of this signal changes overtime.

Your analysis should include

1. Illustrations of time-domain signals (pieces that show clearly the shape of the signal)

2. Quantification of the size of the signals over time

3. Illustrations of clear frequency spectra (at 3 different time windows) demonstrating the difference in the frequency content over time (zoom in or use log scale to better convey the message).

4. An estimation of the mean frequency and median frequency over time. This can be accomplished by segmenting the signals into small pieces and plot the mean and median frequency of each segment against time.

5. Assuming that the frequency changes linearly overtime as depicted in Figure 1 (a > 0), find c(t) = x(t)*u(-t), where u(t) is the unit step function; and plot his graph in Matlab.

Submission requirements (2 pieces):

1. Write and submit a report (60%) in a scientific article format using IEEE conference paper format (template: https://www.ieee.org/conferences/publishing/templates.html) of a minimum of 2 and a maximum of 3 pages (including everything), with the required format of the template. Excess pages will not count towards the grade. The report should contain:

• a very short introduction (max 10 lines) motivating the methods you will use to quantify changes in the frequency overtime.

• a method section describing the data. Furthermore, this section should describe the data analysis approaches that permit the reproducibility of the results.

• a result section summarising the key outcome with a limited interpretation of the results.

You should use 12pt Calibri (or alternative) sans-serif font with 1.5 line spacing. The page limit includes figures, all plots should have a title, labelled axis and units.

2.   Submit your Maltlab m file (40%) that has to run without errors, reproducing you results and graphs.

The alternative assessment is due to be released on Thursday 29th June.

As clarified in the email sent to students in June (Engineering Assessments Period 3 - August Information,

sent 5th June), no extensions will be permitted.

Coursework is due 4pm, Thursday 27th July 2023.

Those with approved KIPS/PAA in place please refer to communications received from the Department (PAA Information for Engineering Assessments Period 3 - August, sent 6th June) for further information. If you have not received this, then please contact the UG office as soon as possible.

Submissions will not be accepted after the deadline has passed, please ensure that you leave plenty of time to check over and upload your work. If you are unable to submit by this deadline, emailengineering- ug@kcl.ac.ukand apply for mitigation as soon as possible. Information on mitigation can be found viaKA- 01744  · Student Services Online (kcl.ac.uk)

Submissions will not be accepted via email; submissions must be made via the correct KEATS area. Further information on the submission area and where to submit can be found via –Course: Engineering Coursework Submissions - August 2023 (kcl.ac.uk).

Support     for     carrying     out     this     assessment     is     available: Please email Dr Kamavuako

(ernest.kamavuako@kcl.ac.uk) if you have specific questions.