Acoustics of Music
NOTES ON COVID-19
UVic is temporarily shifting to online learning Jan. 10-24. Campus services will be open:
https://www.uvic.ca/covid-19/index.php
Dr. Andrew Schloss
Office: MacLaurin A177 Local:
7931
Office hours: Tuesday 4:30-5:30 pm or by
appointment (email to confirm time/mode)
email: aschloss at uvic dot ca
NOTE: All emails pertaining to this class must have "MUS 401C" in the title.
TA: Ila Zbarsky
Office: TBA
Office hours: TBA
email: TBA
Classes: MacLaurin A168: Tues, Weds, Fri 11:30 am
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Student Wellness resources - List of community, local and private resources, relating to mental health and wellness.
Counselling Services - Counselling Services can help you make the most of your university experience.They offer free professional, confidential, inclusive support to currently registered UVic students. A note to remind you to take care of yourself. Do your best to maintain a healthy lifestyle this semester by eating well, exercising, getting enough sleep and taking some time to relax. This will help you achieve your goals and cope with stress. All of us benefit from support during times of struggle. You are not alone.
Health Services - University Health Services (UHS) provides a full service primary health clinic for students, and coordinates healthy student and campus initiatives. We encourage students to use UHS as their primary point of health care while at UVic. We are located at the Petersen Health Centre.
Centre for Accessible Learning - The CAL staff are available by appointment to assess specific needs, provide referrals and arrange appropriate accommodations . The sooner you let us know your needs the quicker we can assist you in achieving your learning goals in this course.
Elders' Voices - The Office of Indigenous Academic and Community Engagement (IACE) has the privilege of assembling a group of Elders from local communities to guide students, staff, faculty and administration in Indigenous ways of knowing and being.
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Text: The Science of Sound, third edition by Thomas Rossing. Addison-Wesley 2002 (on reserve in the UVic Library)
also on reserve: The Acoustical Foundations of Music by John Backus
The Physics and Mathematics of Waves by Mike Divell. An optional primer on the physics of sound. Assumes knowledge of calculus and some differential equations. Not required for this course, read only if you are interested!
Grading:
Quiz (1) 15%
Homeworks (5) 25%
Midterm exam 25%
Final exam 35%
We will cover most of parts I, II, III, IV, VI of Rossing in this course (18 chapters).
(Homeworks normally due on Fridays. Note that homeworks are the EXERCISES in the book)
Week 1 Introduction, basic physical
principles, Vibrating Systems
11 January Reading:
Rossing Chapter 1
Week 2 SHM, Modes of vibration,
complex vibrations, vibration spectra, Fourier transform
18 January Reading: Rossing Chapter
2,3 (optional: Divell article) .
Week 3 Waves, propagation, reflection,
refraction, diffraction, interference, linear superposition, Doppler
Effect
25 January
HW #1 due: Rossing EXERCISES Chapters 1,2,3 (p19:
2,5,9,10 p37: 3,4,6
p58: 1-10)
-- 17 questions = 102 points
Week 4 Resonance, standing waves,
acoustic impedance
1 February Reading: Rossing
Chapter 4
video: phase of driven oscillation at resonance
Week 5 Hearing, anatomy, psychoacoustics, psychophysics: Weber and Fechner's law,
logarithms, critical bands, localization, Haas effect
8 February HW #2 due: Rossing EXERCISES Chapter 4 (p73: 2,3,5,6,8) Reading:
Rossing Chapter 5 -- 5 questions = 30 points
How audition works (3D simulation of auditory system)
Week 6 QUIZ 1: FRIDAY, 4 Feb (Chapters 1-5)
15 Feb Reading:
Rossing Chapter 6
Perception of loudness,
the decibel, masking (forward andi backward), origin of mp3 files
Week 7 READING BREAK (all week)
22 Feb Reading: Rossing
Chapter 7
Week 8 Timbre, spectra of complex
waveforms, beats, Helmholtz, pitch discrimination, jnd for pitch (in cents) and for amplitude (in dB).
1 March
Time domain vs frequency domain revisited (Reading: Chapter 8 -- only sections 8.1, 8.3, 8.4, 8.10, 8.12)
Constructing a complex waveform in the time domain by adding rotating phasors (complex exponentials); for example the first 4 partials of a square wave:
Week 9 Cents, tuning, temperament
8 March Reading: Rossing Chapter
9
Graphical representation of tunings, Bach's scheme for the Well-Tempered Clavier
HW#3 due: Rossing EXERCISES Chapters 5,6,7 (p97: 1-6, p119: 1-5, p147: 1,2,4,8,10,11,12)
-- 18 questions = 108 points
MIDTERM REVIEW CLASS
Week 10
Acoustics of stringed instruments -- violin bowing simulation, violin octet
15 March Reading: Rossing
Chapter 10, Guitar acoustics by Arkady Futerman
MIDTERM: TUESDAY, 15 MARCH (Reference) Chapters 2-9 review test)
Week 11 Brass and Woodwinds
22 March Reading: Rossing Chapters
11,12
Clarinet with flute mouthpiece and vice-versa: http://youtu.be/N5Ch2NThFvY
Clarinet made from carrot! http://youtu.be/LWbj7FYEi3M
Week 12 Percussion and keyboard
instruments
29 March Reading: Rossing Chapter 13,14
HW#4 due: Rossing EXERCISES Chapters 9-12 (p190: 1,3,4,5,7,8,9, p223: 2,3,5,6,(8), p244: 1,4, p270: 4,5,6) -- 16 questions = 96 points
(HINT: Question 3 on page 223 can't be done without "eyeballing" figure 10.7 to see how much of the time is spent slipping vs being pulled by the bow)
Modes of a vibrating plate: (Chladni patterns) http://auditoryneuroscience.com/sites/default/files/TheShapeOfSound.mp4
Week 13 The Human voice: Speech, singing. Room
acoustics
5 April Reading: Rossing Chapters 15, 17,
23 REVIEW and presentations
HW#5 due: Rossing EXERCISES Chapters 13-15, 17, 23 (p308: 4,6, p333: 1,5, p353: 1,7, p396: 1,3, optional: p544: 1,5,6,7) -- 8 questions = 48 points (+4 extra credit questions)
NOTE: Question 6 on p308 refers to figure 13.31, not 13.32
FINAL EXAM APRIL 20, 2022 at 9 am
In-class demos:
SHM: Simulation of multiple masses
WAVES: reflection of pulse on a string
reflected pulses (fixed end = phase reversal, free end = no phase reversal)
WAVES: interference:
FOURIER: synthesis and analysis:
longitudinal vs transverse waves (slinky)
standing waves
tuning fork modes
speaker phase demo
oscillator/beats demo
oscilloscope demo
realtime 3D spectrum (sndpeek)
instrument identification (removing or truncating attacks to obscure instrument identification)
whirling toy (harmonics -- use w/ tuned MSP patch)
music box (sympathetic vibrations vs resonance)
DSP programs, instrument modeling, SuperCollider, MSP
The consonant birdsong: Musican wren: http://youtu.be/vvZVcvxmOgo
Bioacoustics: https://www.mpg.de/7572084/bird-song-human-music
Auditory Demonstrations CD (JASA/Acoustical Society)