Topics and Notes Summary (last update 4/21/2012):

DATE COMMENT

Apr 26 (Thurs)

Last day of EELE 217 class.  The course final exam will be administered during class time this day.  Exam is closed book:  bring a calculator and a pen/pencil.

 

Apr 24 (Tues)

Course wrap-up.  Summary of topics and review for final exam.

 

Apr 19 (Thurs)

Digital audio -- audio effects, and examples of the development of effects and synthesizers.

NOTE:  the course final exam will be held in class on Thursday, April 26.

 

Apr 17 (Tues)

Digital audio -- perceptual audio coding and the principles behind "lossy" coding that sounds perceptually lossless.

 

Apr 12 (Thurs)

Digital audio (cont.)

 

Apr 10 (Tues)

Digital audio -- sampling, amplitude quantization, and the interpretation of digital information

 

Apr 5 (Thurs)

Audio signals:  interconnects and wiring arrangements

 

Apr 3 (Tues)

Finish basic transducer principles;

Audio signals:  home and studio electrical principles (handout)

 

Mar 29 (Thurs)

Quiz on transducers -- microphone basics

Transducer topics (cont.)

Microphone issues, loudspeaker basics

 

Mar 27 (Tues)

Transducer topics (cont.)

Microphone types and characteristics

 

Mar 22 (Thurs)

Musical acoustics (cont.)

Begin audio engineering and transducers

Transducer topics [handout]

NOTE:  special "field trip" opportunity on Saturday, March 24.  We will have a chance to tour the rock group KANSAS' sound system before the concert with the MSU Symphony!  Meet in the Music Bldg. lobby by 3:30PM, and we will walk as a group over to Shroyer Gym.  Here's a link to my web page about the band KANSAS.

 

Mar 20 (Tues)

Discuss Reynolds Recital Hall acoustical measurements

Musical acoustics topics [handout]

 
Mar 13, 15 (T Th) No class -- MSU Spring Break

Mar 8 (Thurs)

Meet in Reynolds Recital Hall:  acoustics measurements

Homework problem due at the start of class.

 

Mar. 6 (Tues)

MIDTERM EXAM in class.  Closed book.  Coverage through material discussed on 2/23/12.  Bring a pencil/pen (and a calculator if you like).

 

Mar. 1 (Thurs)

Exam review

Begin discussion of sound transmission through architectural walls, floors, ceilings, windows, etc.

 

Feb. 28 (Tues)

Reverberation characteristics and control strategies

HOMEWORK problem assigned--due at start of class on Thursday, March 8.

Here is an example Sabine reverb calculation for a simple room.

 

Feb. 23 (Thurs)

Sound absorption, reflection, and transmission (cont.)

(no quiz this week)

Handout regarding reverberation time estimation.

NOTE: the registrar has changed the campus final exam schedule. Our final exam slot is now listed to be Friday, May 4, 2012, 2-3:50PM. We will discuss various options.

Based on class response, I've decided to move the midterm exam to class time on TUESDAY, March 6, 2012.

 

Feb. 21 (Tues)

NO EELE 217 this day (instructor out of town).

 

Feb. 16 (Thurs)

Frequency response of the ear.

Sound absorption, reflection, and transmission

(no quiz this week)

Reading assignment:  chapters 20-23 from the textbook.

NOTE:  there will be no EELE 217 class on Tuesday, February 21.

NOTE:  the Midterm exam is tentatively scheduled for class time on Thursday, March 1, 2012.

Feb. 14 (Tues)

Human ear and hearing (cont.)


Reading assignment:  chapters 13, 14, and 15 from the textbook.

Feb. 9 (Thurs)

In class Quiz on remainder of section 1 and lecture material.

Decibels and sound level comparisons.  Handout about dB.

Reprint about the atmospheric pressure disturbance caused by Krakatoa eruption in 1883.

Start physiology and psychology of the human ear.

Feb. 7 (Tues)

Harmonics and spectral concepts.  Sound levels and the decibel.

Reading assignment:  complete material from Section 1.

 

Feb. 2 (Thurs)

In class Quiz on wave readings and lecture material.

Finish discussion of wave phenomena. Standing waves and resonance.

Start harmonics and spectral concepts.  Sound levels and the decibel.

Speed of sound demo.

 

Jan. 31 (Tues)

Wave propagation: reflection, absorption, refraction, and diffraction.

Speed of sound in various materials

Reading assignment:  chapters 8 and 9 from the textbook (we are skipping chapter 7). 

 

Jan. 26 (Thurs)

In class Quiz on Chapter 4 and lecture material.

Vibration calculations.  Start wave propagation discussion.

 

Jan. 26 (Thurs)

In class Quiz on Chapter 4 and lecture material.

Vibration calculations.  Start wave propagation discussion.

 

Jan. 24 (Tues)

Vibration in simple mass-spring systems: sinusoidal oscillation, frequency, period, cycle, amplitude, and the effects of damping.

Reading assignment:  start chapter 6 from the textbook (we are skipping chapter 5 for now). 

Jan. 19 (Thurs)

In class Quiz on Chapter 3 and lecture material.

Power and energy discussion.

Vibration in simple mass-spring systems and basic mass-spring-damper systems (Chapter 4)

Reading assignment:  Read chapter 4 from the Strong textbook.

Jan. 17 (Tues)

Basic physical quantities and laws.  Measurement units for distance, time, mass, frequency, force, energy, power, etc.

Vibration in simple mass-spring systems and basic mass-spring-damper systems.

Jan. 12 (Thurs)

First class meeting at 1:10PM in Howard Hall Room 117.

Course introduction and some listening experiments.

Reading assignment:  Read chapter 3 from the Strong textbook .

For those of you who have not yet acquired the book, here is a temporary pdf for chapters 3 and 4.