EELE 217 SP17:  Topics and Notes Summary

(last update 4/18/2017)


May 3

EELE 217 FINAL EXAM:  Wednesday, May 3, 2017, 4:00-5:50pm, regular classroom.

Closed book, closed notes.  You may bring a calculator and a pencil/pen.

Apr. 27

Course conclusion:  exam review and discussion.

Apr. 25

Perceptual audio coding and "modern" digital audio.

Apr. 20

In class quiz on lecture material.  Continue Digital Audio concepts.  _

Apr. 18

Finish audio electronics, begin Digital Audio.

Apr. 13

 Audio electronics (cont.)

Apr. 11

Audio electronics:  electrical power system in U.S. homes and businesses; audio interconnects

Electrical wiring and interconnection principles (handout)

Apr. 6

In class quiz on lecture material.

Continue discussion of audio transducer principles.

Apr. 4

Audio transducers:  principles of microphones and loudspeakers

(lecture notes)

Mar. 30

Finish discussion of musical acoustics; start audio transducers

Mar. 28

Return midterm exams and homework.

Musical acoustics: science behind common-practice Western music

(lecture notes)

Mar. 23 (Thurs)

MIDTERM EXAM in class.  Closed book, closed notes.  Pen/Pencil and calculator only.

HOMEWORK assignment due at the START of class.

Mar. 21 (Tues)

Exam review, homework discussion; 

Mar. 16 (Thurs)

No class (Spring Break Week)

Mar. 14

No class (Spring Break Week)

Mar. 9

Exam review (exam is after spring break, Thursday, 3/23/17); begin discussion of musical acoustics

Homework assignment on reverb estimation (due at the start of class on 3/23/17)

Mar. 7

Sound isolation, sound transmission class (STC), flanking paths (cont.)

Mar. 2

Sound in rooms:  reverberation estimation, critical distance, and sound transmission through walls, floors, doors, etc. Handouts on Sabine reverberation estimation, and on wall systems and sound infiltration.

Feb. 28

Begin discussion of sound in rooms:  absorption, reflection, transmission.  Architectural acoustics and reverberation.

NOTE:  mid-term exam is tentatively scheduled for Thursday, March 23 (after spring break)

Feb. 23

In class Quiz on readings and lecture material.

More on the hearing system, noise protection, response to sound.

Feb. 21

Characteristics of hearing: physiology and psychology.  Auditory system, audio demos and listening.

Sound levels and the decibel [decibel handout].

Feb. 16

In class Quiz on readings and lecture material.

Physiology of the ear.  Structures and functions of the hearing system.

Reading assignment:  chapters 20-23 of the Strong textbook.

ear anatomy

Feb. 14

Harmonics and the analysis of complicated periodic vibrations (Guest lecture).

Feb. 9

Speed of sound measurement. Standing waves on strings and in pipes.

Reading assignment:  Finish reading chapters 13-15 of the Strong textbook.

Feb. 7

No class this day (instructor out of town)

Reading assignment:  Start reading chapters 13-15 from the Strong textbook

Feb. 2

In class Quiz on readings and lecture material.

Standing waves and resonance; start harmonics and spectral concepts;  Audio demo of interference, beating, and harmonics. Start sound levels and the decibel.

Reading assignment:  Finish reading material from Section 1 of the Strong textbook.

Jan. 31

Study wave phenomena: propagation, reflection, absorption, refraction, and diffraction.  Doppler effect.

 Jan. 26

In class Quiz on Chapter 4 and lecture material.

Wave phenomena, relationship between frequency, wavelength, and speed of sound.

Reading assignment:  Chapters 6 and 8 from the Strong textbook.

 Jan. 24
Vibration in simple mass-spring systems and basic mass-spring-damper systems (cont.).

Stiffness and mass effect on natural frequency of vibration.

Begin waves and wave motion in air.

Jan. 19

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

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

First class meeting at 1:40PM in Howard Hall Room 117.

Course introduction and some listening experiments.

Reading assignment:  Read chapter 3 from the Strong textbook .