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 3/26/2015):


DATE COMMENT

Mar. 26 (Thurs)

Begin audio transducers (microphones and loudspeakers)

Transducer notes (from powerpoint in class)

 

Mar. 24 (Tues)

Musical acoustics (cont.)

Summary of lecture notes (from powerpoint in class)

 

Mar. 19 (Thurs)

Musical acoustics -- foundations of common practice musical organization

 

Mar. 17 (Tues)

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

Homework assignment on reverb estimation (due at the start of class on 3/24/15)

 

Mar. 12 (Thurs)

(No Class--spring break)

 

Mar. 10 (Tues)

(No Class--spring break)

 

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 .