Department of Electrical and Computer Engineering
Montana State University

EELE 217: The Science of Sound

Spring Semester 2015
LECTURE: 
Section 1 (CRN 32192), Tu Th 13:40-14:30PM,  Howard Hall 117
 

Topics and Notes Summary (last update 3/3/2015):


DATE COMMENT

Mar. 5 (Thurs)

MID-TERM EXAM in class this day.

Coverage from the start of the semester up through the start of room acoustics (2/26/15).

Exam is closed book.  You may bring a calculator (not required) and a pencil/pen.  Exam format will be multiple choice, with a few short-answer questions.

(NOTE from the syllabus:  "A grade of F will also be given automatically if the midterm or final exam is not taken, regardless of the student's aggregate score total." )

 

Mar. 3 (Tues)

Sound in rooms:  reverberation estimation, critical distance, and sound transmission through walls, floors, doors, etc.

Handout on wall systems and sound infiltration.

Exam review.

 

Feb. 26 (Thurs)

Sound in rooms:  direct sound, reflected sound, and reverberation.

Handout on Sabine reverberation estimation.

NOTE:  the midterm exam is tentatively scheduled for class time on Thursday, March 5, 2015.

Feb. 24 (Tues)

Finish characteristics of hearing:  physiology and psychology.
Begin discussion of sound in rooms:  absorption, reflection, transmission.

 

Feb. 19 (Thurs)

In class Quiz on readings and lecture material.

More on the hearing system and its strengths and weaknesses.

Feb. 17 (Tues)

Characteristics of hearing:  physiology and psychology.  Auditory demonstrations and listening.

Article about noise exposure during 1986 9-day non-stop flight of the Voyager aircraft.

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

Feb. 12 (Thurs)

In class Quiz on readings and lecture material.

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

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

Feb. 10 (Tues)

Harmonics and spectral content; sound levels and the decibel

Handout on the decibel.

Article about the atmospheric pressure disturbance caused around the world due to the Krakatoa eruption in 1883.

Start reading chapters 13-15 from the Strong textbook

 

Feb. 5 (Thurs)

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.

Feb. 3 (Tues)

Sound propagation speed in various materials.

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

 

Jan. 29 (Thurs)

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. 27 (Tues)

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.

NOTE:  there will be a special session on "soundscapes" at the College of Arts and Architecture symposium on Wednesday, Jan. 28, 10:00AM, in Cheever Hall First Year Studio.  All are welcome to attend.

Jan. 22 (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. 20 (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. 15 (Thurs)

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 .