EELE217: The Science of Sound
Topics and Notes Summary (last update 4/16/2014):
DATE | COMMENT |
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Apr. 29 (Tues) |
Final exam: regular class room, noon-1:50PM. Closed book; bring pencil (and a calculator if you like).
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Apr. 24 (Thurs) |
Digital audio (cont.) Last class day (woo hoo!): wrap-up and review for final exam.
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Apr. 22 (Tues) |
Digital audio: audio effects and perceptual audio coding
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Apr. 17 (Thurs) |
In class Quiz on notes and lecture material. Digital audio: sampling and quantization
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Apr. 15 (Tues) |
Audio signals: standard levels, signal-to-noise ratio considerations, mixing and dynamic range
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Apr. 10 (Thurs) |
Audio electronics (cont.)
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Apr. 8 (Tues) |
Audio electronics: power system and interconnects for signals Electrical wiring and interconnection principles
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Apr. 3 (Thurs) |
In class Quiz on notes and lecture material. Finish transducer topics; begin audio electronics topics
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Apr. 1 (Tues) |
Audio transducers (cont.)
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Mar. 27 (Thurs) |
Begin audio transducers (microphones and loudspeakers) Handout of lecture notes.
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Mar. 25 (Tues) |
Musical acoustics (cont.) Handout of lecture notes.
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Mar. 20 (Thurs) |
Musical acoustics (cont.)
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Mar. 18 (Tues) |
Musical acoustics
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Mar. 13 (Thurs) |
No class (MSU spring break)
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Mar. 11 (Tues) |
No class (MSU spring break)
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Mar. 6 (Thurs) |
Finish sound isolation; begin discussion of musical acoustics. Handout on sound isolation via architectural wall systems (excerpts from usg.com)
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Mar. 4 (Tues) |
Return and discuss midterm exams and homework. Sound transmission and isolation: architectural considerations for STC (sound transmission class), flanking paths, and general sound isolation principles. |
Feb. 27 (Thurs) |
Midterm Exam in class this day Closed book; bring pencil (and a calculator if you like). (HW due at the start of class) (example solution to homework)
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Feb. 25 (Tues) |
Reverb measurement and sound characteristics Review for Midterm Exam
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Feb. 20 (Thurs) |
(no quiz this week) Reverberation (cont.), room modes, sound diffusion. Homework assignment reverb estimation (due at the start of class on 2/27/14).
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Feb. 18 (Tues) |
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, February 27, 2014.
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Feb. 13 (Thurs) |
In class Quiz on readings and lecture material. More on physiology and psychology of hearing. Article about noise exposure during 1986 9-day non-stop flight of the Voyager aircraft. Start sound absorption, reflection, transmission. Reading assignment: Chapters 20-23 from the Strong textbook. |
Feb. 11 (Tues) |
Characteristics of hearing: physiology and psychology. Auditory demonstrations / listening.
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Feb. 6 (Thurs) |
In class Quiz on readings and lecture material. Physiology of the ear. Outer, middle, and inner ear structures and functions. Reading assignment: Chapters 13, 14, and 15 from the Strong textbook. |
Feb. 4 (Tues) |
Sound levels and the decibel [handout]. Article about the atmospheric pressure disturbance caused around the world due to the Krakatoa eruption in 1883.
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Jan. 30 (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. |
Jan. 28 (Tues) |
Sound propagation speed in various materials. Wave phenomena: propagation, reflection, absorption, refraction, and diffraction.
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Jan. 23 (Thurs) |
In class Quiz on Chapter 4 and lecture material. Wave phenomena; relationship between frequency and wavelength. Speed of sound demonstration/measurement in class. Reading assignment: Read chapters 6 and 8 from the Strong textbook. |
Jan. 21 (Tues) |
Vibration in simple mass-spring systems and basic mass-spring-damper systems. Stiffness and mass, and the effect upon natural frequency of vibration. Begin waves and wave motion in the air.
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Jan. 16 (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. 14 (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. 9 (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 . For those of you who have not yet acquired the book, here is a temporary pdf for chapters 3 and 4. |