Physics 107: Acoustics
Course Instructor - Spring 13/14:
Prof. Luis Cruz
Lectures: TR 12:30-1:50 pm, Pearlstein 307
Office: Disque, Rm. 912
Office Hours: Please email for an appointment
Phone: (215) 895-2739
Have a great Summer!
(June 13) Final grades are posted in DrexelOne.
(June 5) Lecture slides for Thursday June 5 are posted. Follow link below.
(June 5) Partial solutions to Homework #4 are posted below.
(June 3) The Final Exam is scheduled for Thursday, June 12 from 10:30am to 12:30pm in Curtis 340.
Note that the final is comprehensive (i.e. covering the material
from the whole term), but emphasis will be
given to the new material since the last quiz. As before, you will be able to use the book and
class slides, but only for the first 40 minutes.
(June 3) The key to Quiz 2 is posted below.
(June 3) Lecture slides for Tuesday June 3 are posted. Follow link below.
(May 31) Histogram of grades for Quiz 2 are posted below.
(May 29) Lecture slides for Thursday May 29 are posted. Follow link below.
(May 23) Quiz 2 is scheduled for Tuesday, May 27 during class.
It will cover all material
included in chapters 4, 6, and 8 (sections 1-2), and corresponding lecture
slides. You will be able to use the book for only HALF of the time of
the quiz, so make sure you read all material before taking the quiz.
(May 23) Solutions to Homework #3 are posted below.
(May 23) The key to Quiz 1 is posted below.
(May 22) Lecture slides for Thursday May 22 are posted. Follow link below.
(May 21) Lecture slides for Tuesday May 20 are posted. Follow link below.
(May 15) Problem Set 4 is posted below. The problem set is due Thursday, May 22.
(May 15) Lecture slides for Thursday May 15 are posted. Follow link below.
(May 13) A histogram of grades for Quiz 1 is posted below.
(May 13) Lecture slides for Tuesday May 13 are posted. Follow link below.
ABOUT THIS COURSE
Welcome to the Acoustics course offered by the Department of Physics. This
course will cover the theory describing sound, behavior of sound waves,
resonance and harmonics, frequency analysis, electronic production of sound,
sound perception by the human ear, sound recording and reproduction, and room
acoustics. The emphasis of the course will be on gaining a good general
understanding of how sound operates in the physical world and how our ears
respond to it.
Although this course will be presented in a lecture-based format, there will
also be demonstrations in the form of audio and video recordings illustrating
basic concepts. Please, refer to the class Syllabus below for more detailed and complete
REQUIREMENTS AND INFORMATION
- 1 due in class Thursday, April 10.
- 2 due in class Thursday, April 24.
- 3 due in class Tuesday, May 13.
- 4 due in class Thursday, May 22.
- Solutions for Homework:
MATERIALS (Restricted access. Also available at learning.drexel.edu)
- Lecture slides are HERE.
Aural Combination 1 and
Aural Combination 2. These sound clips
show (1) the beats that occur between a third sound and a difference tone and (2) the
shifting of two combination tones. The combination tones will be most apparent at an
increased playback volume (but not too high to keep it safe).
Binaural Beats. This sound clip provides
a 250 and 252 Hz tones to the left and right ears, respectively. Do not play the clip too
loud. In most cases, the listener will hear a sensation of beats although the sound waves
from each ear do not "mix" in air, but they do in the brain.
Holophonic 3D Sound Example.
You can find more examples of binaural localization in youtube.com.
Search for "Holophonic 3D sounds" and have some fun.
This website is located at: http://www.physics.drexel.edu/~ccruz/courses/PHYS107/