Acoustical Modeling MCQs
Acoustical Modeling MCQs
Looking for a reliable source of Acoustical Modeling MCQs? We provide diverse selection of multiple choice questions on Acoustical Modeling subjects to enhance your knowledge acquisition.
1: What is the unit of measurement for sound absorption?
A. Sabin
B. Mile
C. Meter
D. Foot
2: What does a absorption coefficient of 1.0 indicate?
A. Total reflection
B. Total absorption
C. Area Effect
D. Total transmission
3: What is the main purpose of acoustical tile?
A. To amplify sound
B. To block sound
C. To reflect sound
D. To absorb sound
4: What is the most common type of material used to make acoustical tile?
A. Fiberglass
B. Pressed Board
C. Gypsum
D. PVC
5: What is the science of the production, control, transmission, reception and effects of sound called?
A. Physics
B. Acoustics
C. Biology
D. Chemistry
6: What is Ambience?
A. The base color of a sound
B. The technical quality of a recording
C. The margin of safety around a sound
D. The residual "room sound" of a listening environment.
7: What is the residual "room sound" of a listening environment called?
A. Diffusion
B. Reflection
C. Reverberation
D. Ambience
8: What is ambient noise?
A. All pervasive noise associated with a given environment.
B. A type of music
C. A sound that is pleasant to the ear
D. A sound that is loud and interrupting
9: What does analog mean?
A. Analog representations of sound replicate its waveform, while transferring it through different media.
B. Audio may be digital or analog.
C. Digital representations of sound replicate its waveform, while transferring it through different media.
D. All sound is digital.
10: What is the name of the phenomenon occurring due to the exposed edges and diffraction of sound energy around perimeters?
A. Perimeter Effect
B. Diffraction Effect
C. Area Effect
D. Edge Effect
11: True or False: The surface of an anechoic wedge has a total surface area greater than the flat surface it replaces.
A. True
B. False
12: What is the definition of articulation?
A. The study of insects.
B. A measure of the intelligibility of speech.
C. The study of ancient cultures.
D. A form of medical treatment.
13: What does the ASTM E 84 test method evaluate?
A. Both flame spread and smoke development
B. Surface burning characteristics
C. Only smoke development
D. Only flame spread
14: What does the ASTM E 84 test method determine?
A. The chemical composition of building materials
B. The flammability of building materials
C. The surface burning characteristics of building materials
D. The amount of smoke produced by building materials
15: What does it mean to Attenuate?
A. To transmit an acoustical or electrical signal.
B. To increase the level of an acoustical or electrical signal.
C. To reduce the level of an acoustical or electrical signal.
D. To reflect an acoustical or electrical signal.
16: What is the usual range of the human hearing?
A. 2 Hz to 2 kHz
B. 2 Hz to 20 kHz
C. 20 Hz to 20 kHz
D. 20 Hz to 2 kHz
17: Which is correct regarding an audio frequency?
A. A frequency that falls outside the range of human hearing
B. A frequency that falls within the range of the human hearing, usually taken as 20 Hz to 20 kHz.
C. A frequency that falls above the range of human hearing
D. A frequency that falls below the range of human hearing
18: What does the "A" in dBA stand for?
A. A-weighted
B. Amplitude
C. Average
D. Attenuation
19: What are room resonances associated with each pair of parallel walls called?
A. Axial mode
B. Cardioid mode
C. Oblique mode
D. Tangential mode
20: What are room resonances associated with?
A. Reverberation time
B. Each pair of parallel walls
C. Modes of a room
D. Sound pressure levels
21: What is the ambient noise level above which signals must be presented or noise sources measured?
A. Disruptive noise
B. Environmental noise
C. Ignored noise
D. Background noise
22: A device used to inhibit the propagation of sound waves is called a _____.
A. Baffle
B. Damper
C. Blocker
D. Barrier
23: What is the purpose of a barrier?
A. To amplify sound
B. To allow sound
C. To block sound
D. To produce sound
24: Which of the following is true about a barrier?
A. It is light and porous.
B. It is liquid.
C. It is transparent.
D. It is heavy and dense.
25: What is the purpose of a Bass Trap?
A. To block low frequency sound waves
B. To absorb low frequency sound waves
C. To amplify low frequency sound waves
D. To reflect low frequency sound waves
26: What is the primary purpose of a Bass Trap?
A. To emit low frequency waves
B. To absorb low frequency waves
C. To reflect low frequency waves
D. To cancel low frequency waves
27: What does "block" mean?
A. To reduce the intensity of sound waves.
B. To reduce the speed of sound waves.
C. To increase airborne sound transmission.
D. To reduce airborne sound transmission.
28: What is the purpose of Block?
A. To reduce solid sound transmission
B. To increase solid sound transmission
C. To increase airborne sound transmission
D. Reduce airborne sound transmission
29: What does the term "boomy" usually refer to?
A. Medium frequency energy
B. High frequency (treble) energy
C. Excessive amount of low frequency (bass) energy.
D. No frequency energy.
30: What is the definition for "break" in the context of sound vibrations?
A. A soft, short sound
B. A sudden change in volume
C. A physical gap in the assembly or construction, which acts to decouple sound vibrations from traveling through a structure.
D. A device that is used to amplify sound
31: What does the term "bright" usually refer to in regards to listening?
A. Excessive upper frequency (treble) energy.
B. Excessive lower frequency (bass) energy.
C. A feeling of spaciousness and airiness.
D. A term used to describe equipment that is visually appealing.
32: What is the destructive interference of two or more sound waves called?
A. Interference
B. Cancellation
C. Superposition
D. Diffraction
33: What is Ceiling Attenuation Class?
A. The ability of a ceiling to disperse sound evenly.
B. The sound rating of a ceiling material
C. A single-figure rating derived from the normalized ceiling attenuation values.
D. The percentage of light that is reflected off a ceiling
34: Ceiling Attenuation Class is used to rate a ceiling's _______.
A. Width
B. Efficiency as a barrier to airborne sound transmission
C. Weight
D. Height
35: What is a ceiling cloud?
A. A decorative element hung from the ceiling
B. An acoustical panel suspended in a horizontal position from ceiling or roof structure
C. A panel that helps to insulate a room
D. A type of molding used to finish the edges of a ceiling
36: What does a comb filter do?
A. Produces a distortion
B. Resembles a smooth curve
C. Introduces peaks and nulls into the frequency response
D. Delays an acoustical signal
37: What is the result of combining an acoustical signal with a delayed replica of itself?
A. It results in a smooth curve
B. Delayed replica of the signal
C. It does nothing
D. Constructive and destructive interference that results in peaks and nulls being introduced into the frequency response.
38: The Cocktail Party Effect is
A. The ability to ignore background noise
B. The ability to make cocktails
C. The ability to focus on a single talker in a crowd
D. The ability to read lips
39: What isColoration?
A. The reflection of light
B. A form of abstract art
C. A branch of physics
D. A term used to indicate audible alterations to sound due to its environment.
40: What is the opposite of constructive interference?
A. Complete reflection
B. No reflection
C. Partial reflection
D. Destructive interference
41: What is the purpose of a D-Ring?
A. To mount baffles
B. To shape metal
C. To hold hanger wire
D. To mount a device
42: What is a D-Ring?
A. A type of dance
B. A metal mounting device, shaped like a D, used in conjunction with hanger wire to mount baffles.
C. An astronomical term
D. A letter in the Greek alphabet
43: What is Damping?
A. The loss of energy in a vibration system, usually through friction.
B. The amplification of energy in a vibration system.
C. The transfer of energy to another object in a vibration system.
D. The build-up of energy in a vibration system.
44: What is an acoustical condition in which reverberation is absent called?
A. Dead
B. Live
C. Dry
D. Damp
45: What is the decay time of a room at a specific frequency?
A. The time necessary for a sound to decay 50 dB.
B. The time necessary for a sound to decay 30 dB.
C. The time necessary for a sound to decay 10 dB.
D. The time necessary for a sound of that frequency to decay 60 dB.
46: The decay time of a room is the time necessary for the sound to decay_____
A. 45 dB
B. 50 dB
C. 60 dB
D. 30 dB
47: What is the decibel?
A. A unit of loudness
B. The measuring unit of sound pressure
C. The sound pressure of a reference sound
D. A numerical ratio between the sound pressure of a given sound and the sound pressure of a reference sound
48: What is the correct term for reflected energy that occurs in close proximity to the source?
A. Reverberation
B. Early reflection
C. Late reflection
D. Echo
49: What is an eased edge?
A. A line on a map
B. The name of a town in Texas
C. An acoustical panel edge detail also known as a quarter-inch (¼") bevel.
D. An optical illusion
50: What is the quarter-inch bevel also known as?
A. Eased (edge)
B. Bevel edge
C. Edge panel
D. Edge detail
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