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Welcome to PHYS/MUS 102, Spring 2014 PowerPoint PPT Presentation


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Welcome to PHYS/MUS 102, Spring 2014. Today’s Schedule. 9-10:15( ish ) Syllabus + Intro Stuff Lecture: Simple Harmonic Motion 10:15( ish ) – 10:30 Quick stretch/restroom break. 10:30-11:00 Intro to Lab Equip (meet in Howe 204). 11am-2 pm

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Welcome to PHYS/MUS 102, Spring 2014

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Welcome to phys mus 102 spring 2014

Welcome to PHYS/MUS 102, Spring 2014


Today s schedule

Today’s Schedule

9-10:15(ish)

Syllabus + Intro Stuff

Lecture: Simple Harmonic Motion

10:15(ish) – 10:30

Quick stretch/restroom break.

10:30-11:00

Intro to Lab Equip (meet in Howe 204).

11am-2 pm

Do experiment (take lunch whenever you wish)

2-3 pm

Help with lab reports (optional)


Introductions

Introductions

  • Name

  • Hometown

  • Major and class year

  • Music background

  • What’s on your playlist at the moment

  • One fun/random fact


Quotable quotes

Quotable Quotes

Life without playing music is inconceivable for me.

-Albert Einstein

Image credit: http://www.stumbleupon.com/stumbler/MamaJS/reviews/


Quotable quotes1

Quotable Quotes

To stop the flow of music would be like the stopping of time itself, incredible and inconceivable.

-Aaron Copland


Questions to ponder

Questions to ponder:

  • What is music?

  • How would you define it in physical terms?


Welcome to phys mus 102 spring 2014

Harmonic Analysis

It’s all in your head: psycho-acoustics

Pure listening

pleasure: Auditorium design

Sound waves/vibrations


Ferris wheel problem

Ferris Wheel Problem

You and a friend are riding the Ferris wheel. How would you plot your height above the ground vs time as the ferris wheel turns? The wheel has a radius of 20m, and you complete one trip around the wheel every two minutes.

Height (m)

Time (min)

1

2

5

3

4


Oscillations simple harmonic motion

Oscillations/Simple Harmonic Motion

time

Period


Simple harmonic motion basic definitions

Simple Harmonic Motion: Basic Definitions

A = amplitude

T = period

f = 1/T = frequency

x(t) = displacement/position as a function of time

x(t)


Diving board oscillations

Diving Board Oscillations

Analogy of diving board in musical setting = ?


Transient decay

Transient Decay

Musical note “dies out”

Zoomed in (17 msec)

t

Decay time: where amplitude of signal drops to e-1of the max amplitude = ~37% of max amplitude


What s all this got to do with music

Answer: Everything

What’s all this got to do with music?!


Lab reports

Lab Reports

  • Introduction: what you are studying and why

  • Methods: what you did and how it works-- theory and techniques described in detail

  • Results: what you observed

  • Discussion: what it all means


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