Course:PHYS341/Archive/2016wTerm2/Assignments/A10
Preparation for Final Exam
For final exam, review all previous assignments, the midterm and the following:
Textbook sections covered in last week: 25.1-4, 26.2, 26.4-8, 27.1
As with the midterm, you are encouraged to bring into the final a single letter-sized sheet of paper with handwritten notes. Yes, both sides can be used.
In addition for your project:
- make sure all of my comments have been dealt with and removed.
- count words (must be not less than 1000 and no more than 1500 all included, captions, references, titles, everything).
The first three multiple-choice questions here have ONE answer.
1. We obtain information about the direction of a sound source from which of the following cues?
(a) comparison of the frequencies of the pinna notch in each ear
(b) relative amplitude of the signal in each ear
(c) relative timing of the signal in each ear
(d) association with visual information
(e) all of the above
2. A blind person, deaf in one ear, can obtain some information about the direction of a sound source from which of the following cues?
(a) frequency of the pinna notch
(b) amplitude of the signal reaching the ear
(c) timing of the signal reaching the ear
(d) such a person cannot deduce any direction information
3. Which of the following statements about a room's reverberation time is WRONG?
(a) the bigger the room, the longer the reverberation time
(b) the harder the surfaces of the floor, walls and ceiling, the longer the reverberation time
(c) the more people there are in the room, the longer the reverberation time
(d) the reverberation time is the time it takes the sound level to drop 60 dB after a broadband sound signal has ceased
(e) the reverberation time is the time it takes the sound intensity by a factor of a million after a broadband sound signal has ceased
4. Acoustic standing waves in a room ("room modes") have
(a) pressure nodes at the walls
(b) pressure antinodes at the walls
(c) acoustic velocity nodes at the walls
(d) acoustic velocity antinodes at the walls
Then prepare one letter-sized sheet of hand-written notes to bring to the exam (Tuesday, Apr 18, 15:30-18:00, IKBLC261).