Name___________________________________Pledge__________________________________
Read
each item carefully. Choose the "best" answer for each question. Do not
make hasty decisions on any answer. Budget your time. Don't stay too long
with any one question. Answer all the questions you are sure of first.
Come back to the rest. The maximum score is 130pts plus 3pts bonus. Turn
in both the exam sheet and the answer sheet.
Multiple
Choice3pts each
1.The
acoustic spectrum is __________:
1)Continuous
over the range of human hearing
2)Continuous
over the range of animal hearing
3)Continuous
over a range beyond human hearing
4)Defined
by psychological parameters
5)A
disco club in Benson
2.There
is a plan to place huge banks of very sensitive parabolic microphones on
the moon and aim them toward Mars to listen for evidence of industrial
activity. The plan is ____:
1)Feasible
but in need of extremely sensitive microphones
2)Not
feasible because of the great distance
3)Feasible
but in need of extremely large speakers
4)Not
feasible because of the noisy atmosphere on the moon
5)Not
feasible because of the nature of the medium between Mars and the Moon
3.A
transducer is _________:
1)An
energy conversion device
2)A
term for pro"ducer" of "trans"mitted programs on network TV
3)That
technology that broadcasts radio and TV signals
4)A
strobe light set at 8 - 10 Hz to sycnchronize with brain waves
5)Neither
of these is even close.
4.Communication
absolutely requires a __________:
1)Code
using system
2)Written
language
3)Spoken
language
4)Mass
medium
5)Degree
in Communication Studies from UNC
5.An
amplifier is __________:
1)A
bank of transducers
2)A
transducer working backward
3)A
transducer set to respond to a limited frequency range
4)A
device that accepts transducer output and increases it
5)A
device that converts energy from one form to another.
6.Which
of the following is not a part of the sound envelope?
1)Frequency
2)Pitch
3)Timbre
4)They
are all parts of the sound envelope
5)None
of these is part of the sound envelope
7.Light
passing through a piece of frosted glass is an example of __________:
1)Specular
transmission
2)Diffuse
transmission
3)Absolute
reflection
4)Transflection
5)None
of the above
8.Our
perception of the color of an object depends upon __________:
1)The
actual color of the molecules in the object
2)The
wavelengths of light reflected from or absorbed by the object
3)The
amplitude of the wavelengths of light hitting the object
4)The
presence of air to transmit the reflected waves to our eyes.
5)None
of the above
9.A
light wave is a __________. A sound wave is a ___________.
1)Transverse,
transverse
2)Longitudinal,
longitudinal
3)Transverse,
longitudinal
4)Longitudinal,
transverse
5)Neither
of the above. Spectrum classifications such as these do not apply here
10.Which
of the following would be the most logical synonym for "sound envelope?"
1)Amplitude
contour
2)Frequency
contour
3)Frequency
graph
4)Amplitude
diffusion curve
5)None
of the above
11.The
binary number 110011 is equivalent to the decimal number ___________:
1)58
2)59
3)52
4)51
5)"Fifty
something" my foot. He is just trying to fool us. It is none of the above.
12.A
binary number composed of eight places (an eight-bit number) can represent
__________ values including zero.
1)128
2)129
3)64
4)256
5)Thousands
of
13.Choosing
a 16 bit device (or software) over a 32 bit device (or software) for graphics
will most likely __________:
1)Be
more expensive
2)Double
the resolution of the representation
3)Cut
the resolution of the representation in half
4)Make
little difference in the outcome
5)None
of the above
14.Which
of the following does not belong in the list?
1)15
inches per second
2)32
bit
3)44.1
kHz
4)Stereo
5)Digital
Audio Tape
15.Which
of the following does not belong in the list? The list is about amplifiers.
1)Frequency
2)Gain
3)Amplitude
4)Level
5)Signal
16.Which
of the following has the highest frequency?
1)650
nanometer wave
2)450
nanometer wave
3)Both
have the same frequency. Only amplitude varies
4)Light
waves do not have frequency
5)None
of the above
17.__________
microphones pick up ambient sounds.
1)Omnidirectional
2)Unidirectional
3)Bi-directional
4)All
5)No
ordinary
18.Which
word is the misfit from the list?
1)Dynamic
2)Condenser
3)Capacitor
4)Shotgun
5)Ribbon
19.Kick
out the misfit.
1)Hertz
2)Cycles
per second
3)Frequency
4)Pitch
5)KHz
20.How
far away from two dots (three inches apart) would you have to be in order
to see the two of them as one?
1)7
inches
2)70
inches
3)700
inches
4)7000
inches
5)3
x 70, or 210 inches
21.Film
is shown at 24 frames per second because the __________ shows us that motion
will appear smooth to most people at that frequency of projection.
1)Motion
Picture Academy
2)Phi
phenomenon
3)Flicker
fusion frequency
4)Frequency
response curve
5)Proximity
effect
22.The
Chromaticity diagram shows saturated hues along the outside edge. What
happens as you move inward toward the center of the diagram?
1)The
hues become "purer, more saturated." That is, they become whiter.
2)The
frequency of the light decreases
3)The
hues become "less pure, less saturated." That is, they become whiter.
4)The
frequency of the light peaks at the maximum.
5)Nothing
happens. The hues remain the same no matter where you are on the diagram.
Only the amplitude (brightness) of the light changes.
23.A
device that enables you to boost certain frequencies and attenuate others
is called a
1)Pitch
compressor
2)Frequency
expander
3)Graphic
equalizer
4)Parametric
limiter
5)AGC
24.Lenses
mainly depend on the phenomena of __________ and __________ for their operation.
1)Reflection,
refraction
2)Reflection,
diffraction
3)Diffraction,
refraction
4)Refraction,
transmission
5)Transmission,
diffraction
25.In
audio "dynamic range" refers primary to
1)general
audio quality
2)signal-to-noise
ratio
3)the
range in loudness that equipment can reproduce
4)the
audio frequency range that equipment can reproduce
5)the
highest audio frequency that a speaker can reproduce
26.The
three primary subtractive colors are
1)magenta,
cyan and yellow
2)red,
blue and yellow
3)black,
white, and grayscale
4)green,
red and blue
5)none
of the above is true
27.A
rugged type of mic that is generally better able to withstand the rigors
of field recording is the
1)crystal
mic
2)dynamic
mic
3)condenser
mic
4)ribbon
mic
5)contact
mic
28.The
most highly directional mic application type listed below is the
1)parabolic
2)hypercardioid
3)supercardioid
4)cardioid
5)polydirectional
29.Reverberation
in a room interferes with the intelligibility of speech. This would be
the greatest problem when
1)the
room contains a lot of people and furniture
2)the
room has a rug on the floor and acoustic tiles in the ceiling
3)the
room has smooth walls and a hardwood floor
4)the
room is extremely large
5)all
of the above would create major problems
30.Some
microphones tend to color the sound in favor of the lower frequencies when
they are moved close to the sound source. This is known as the __________
1)Doppler
effect
2)Transmission
effect
3)Chromatic
effect
4)Dynamic
effect
5)None
of the above
----------------------------
True
- False 2pts each
31.A
limiter can be thought of as a compressor with a high (20:1 or greater)
compression ratio.
1)True
2)False
32.The
law of inverse squares states that up to a certain point the apparent loudness
of a sound actually increases as you move away from the source.
1)True
2)False
33.Numbers
like 8-bit and 16-bit represent sampling depth. Numbers like 22kHz and
44kHz are used to designate sampling rate.
1)True
2)False
34.Echo
and Reverberation are related just like frequency and pitch. One is physical,
the other is psychological.
1)True
2)False
35.Recording
in a large open space such as a field outdoors and recording in a foam-lined
closed studio indoors both produce "dead" sounding recordings.
1)True
2)False
36.It
takes two ears (binaural hearing) to get any spatial information (localization)
about a sound source just as it takes two eyes (binocular vision) to get
any spatial information about visual objects.
1)True
2)False
37.Rods
are more motion-sensitive than the color and detail-oriented cones. They
(the rods) are concentrated in the center of the retina thus enhancing
human hand/eye coordination.
1)True
2)False
38.Light
waves and x-rays are essentially the same phenomena. That is to say they
are both forms of electromagnetic energy. They just differ in frequency.
1)True
2)False
39.While
light and sound are very different in some ways, they are similar in other
ways. As an example we depend upon the presence of the atmosphere (the
medium of air) in order to both see and hear. In true outer space (not
the movie versions) we could neither see nor hear without our eyes and
ears surrounded by air.
1)True
2)False
40.Db
is a relative measure of loudness. It has no fixed quantitative reference
unit.
1)True
2)False
41.LPs
(vinyl records) are linear playback devices just like the more popular
cassettes that have replaced them. CDs, on the other hand, are nonlinear
(random access)."
1)True
2)False
42.Digital
recordings can be reproduced multiple times with no degradation of signal.
Each copy is a perfect replica of the original. Analog recordings lose
resolution and gain noise with each generation of reproduction.
1)True
2)False
43.A
device that permits one to hear the output from more than one source (say,
three microphones and a guitar amp) simultaneously is called an attenuator.
1)True
2)False
44.Headphones
are essentially speakers.
1)True
2)False
45.Common
audiotape formats range from 1/8"up
to 1 inch. As a rule the larger tape size indicates higher resolution.
Thus it is no surprise that the 1/4-inch reel-to-reel format offers greater
fidelity than the smaller 1/8" cassette format.
1)True
2)False
Matching
and bonus questions on next page.
Match
the following (1 point each). No duplications. There is only one correct
combination using all selections. A perfect match gets five bonus points.
Enter your answers on your Scantron Sheet.
46.Frequency3)
hue
47.Amplitude2)
loudness
48.Pitch4)
frequency
49.Tempo1)
speed
50.Color5)
timbre
Bonus
Question (3pts)
Write
7,937 as a binary number. Show your work in the space below.