James Vanderburg Danny Garcia Dr Brad Conrad Dept of Physics and Astronomy The Science Technology Engineering and Mathematics Talent Expansion Program STEP Overview Edited Acoustic amp Harmonic Labs for ID: 792630
Download The PPT/PDF document "Acoustics & Harmonics Labs" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
Acoustics & Harmonics Labs
James Vanderburg
Danny Garcia
Dr. Brad Conrad, Dept. of Physics and Astronomy
The Science, Technology, Engineering, and Mathematics Talent Expansion Program (STEP)
Slide2Overview
Edited Acoustic & Harmonic Labs for
Phy
1812 and 1814Expanded the text / TroubleshootEasier to understand for non-majorsIncreased physics content Goal: To make labs simple yet entertainingMost students are musicians or recording majors
http://www.mediacollege.com/audio/images/loudspeaker-waveform.gif
Slide3Labs
Position, Velocity, and Acceleration
Emphasizes use of graphs over equations
Hooke’s Law (two parts)Newton’s laws & spring oscillationF = ma and
Dampening of a springSpeed of SoundMeasured speed of sound.ReflectionsResonances
http://
www.taiwantrade.com.tw/resources/member/169597/productcatalog/84a61913-4e85-45a9-9cab-257f2fd5e649_A01-743W-Y31.JPG
http://www.patana.ac.th/secondary/science/anrophysics/ntopic4/images/spring%20air%20damping.gif
Slide4Labs cont’d…
Helmholtz Resonators
Relationship between frequency and the shape of a container
Vibrating Strings
Explored sound waves using
a string to show waves move
in physical form
Examined waves on a stringFourier Processing of Music Fourier analysis using Audacity
music voice
http://people.rit.edu/andpph/photofile-sci/vibration-string-6249.jpg
Slide5Laser Microphone
How it works:
Sound waves inside room cause window to vibrate
Laser bounces off window and back to receiver / photoreceptorReceiver converts back to soundlaser and bounces off of a window window vibrates due to soundLaser reflection is modified
Receiver picks up modified sound
http://farm4.static.flickr.com/3006/2965414094_54a15ec174.jpg
http://marinebio.org/i/sound/sound.jpg
http://justglasssite.com/glass-pics/window-7.jpg
Slide6Laser Microphone Lab
How we will set up the lab:
Figures below illustrate basic idea
2 week lab to set up laser, and to collect dataPlan to make lab next semester
Slide7Acknowledgments
We’d like to thank:
Dr. Brad Conrad for being a pretty cool dude
Dr. Tashakkori for arranging EVERYTHING!!!NSF for providing the “mula”We would like to thank the Physics Department, and Appalachian State University for allowing us to use their facilities.