Physics 371 - Acoustics for Musicians
This
course is intended primarily for undergraduate and graduate music students who
wish to learn about the physical basis of sound and musical instruments.
Elementary physics principles are used to
describe oscillating systems, waves, and wave propagation. The
relationship between the physical stimulus (frequency, amplitude, sound
pressure, Fourier components) and the perception of sound (pitch, loudness,
timbre) are discussed. The fundamental frequencies of strings and pipes and
their overtone structure (partials) are treated quantitatively. The physical
basis of consonance is used to show the origin of the diatonic scale.
Differences between tunings (just tuning, tempered, meantone) are studied.
The physics of musical instruments is explained, including the mechanism by
which
steady tones are excited, enhanced, and propagated in the string, reed, brass,
and percussion families, as well as the voice. The origin of formants in
the sound spectrum is discussed. Other topics
treated are physiology of hearing and the fundamental principles of room
acoustics. In every lecture, a number of lecture demonstrations is
presented. A short term paper on a topic of the student's choosing
in the area of musical acoustics is due at the end of the term.
Typical texts are:" The Acoustical Foundations of Music" by J. Backus; "Musical Acoustics" by D.E. Hall; "Acoustics for Musicians" byW. F. Fry, a UW Emeritus Professor of Physics, available in mimeograph form.
Prerequisites: HS Algebra.
A recent Syllabus is shown here.