ECGR 4122 Acoustics

Acoustic Waves

Overview

The objective of this project is to become familiar with:

Acoustic Waves
Continue to work in the same groups

Project

Overview of how to do the project:

You will need two files for this project

Download and open the video file pvcPipe35inchPulseVideo.mp4 which is a video of an acoustic wave experiment
You may also wish to hear the audio file pvcPipe35inchSoundAudio.mp3
Download and open the matlab file e4122p05acousticWave_f.mlx

The simulation will show the propagation of the pulse down a line as illustrated below

Fig. 01

NOTE: Instructions for the experiment in the video are included in the maatlab script, in the questions of the script
The video shows a pvc pipe with an acoustic pulse bouncing back and forth in the air inside the tube (blue circle below)

Fig. 02

The matlab script should open in the live editor (magenta arrow below) as shown below
Make sure the live editor opens in the output-on-right mode (blue arrow below)

FIg. 03

The script file is on the left (blue box above) and the output generated is on the right (magenta box above)
Run the script by pressing the run button (magenta circle above)
Read through the script and make any changes that are requested

Save your file frequently

Answer all questions by filling in the answers in the script such as:

disp(' Answer: this is my answer')
at the appropriate places in the script
this will place your answers in the pdf-printout when the script runs after you export a pdf of the project (instructions below)

PROJECT REPORT

To export a pdf of your report:

First, the project should be opened in "Maatlab Live Editor"(magenta arrow below) to export a pdf.
Make any needed maatlab changes per any questions in the project.
You must re-run the script for changes to take effect (blue circle below)
Answer all numbered questions below, Q1, Q2, etc.
Select the "Hide Code" format (blue arrow below) before exporting your pdf
In live editor, use Save::export-as-pdf (magenta circle below) to print the report
DO A FINAL CHECK of your pdf before turning it in.
Once your file is exported, it should look like this example report.

Fig. 04

DONT FORGET TO SAVE YOUR FILES!

Tips:

Download any missing toolboxes as prompted

MATHCAD is a trademark of PTC INC. MATLAB and Simulink are registered trademarks of The Math Works, Inc. All other product or service names are the property of their respective owners.