The Audiovisual Design and Integration Process
A "just noticeable" change in sound pressure level, either louder or softer, requires a _____ change.
+/-3 dB
An audio amplifier outputs 75 watts and then it is decreased to 50 watts. What is the change in decibels? Round your answer to the nearest tenth of a decibel.
-1.8
A presenter is playing a music CD from her laptop for two people in a room. Listener #1 is 2 meters away from the presenter. Listener #2 is 15 meters away from the presenter. What is the expected loss at the listener #2 position? Round your answer to the nearest tenth of a decibel.
-17.5
Match each horizontal visual field component with the angle from the standard line of sight of its limit.
10 - Word, 5 - Symbol, 30 - Color
Your target sound pressure level for a listening space is 75 dB SPL. You have selected a loudspeaker with rated sensitivity of 85 dB SPL 1w/1m. The loudspeaker will be installed 9.8 feet (3 m) from the farthest listener. Of the available loudspeaker taps listed below, which would you select to deliver the required power to the loudspeaker?
10 watts
The Image Height is 48 inches (1220 mm) for a room of seated viewers, and the bottom of the display will be hung 60 inches (1525 mm) from the floor. What is the Closest Viewer?
103.9
The Image Height is 54 inches (1372 mm), and the display will be hung 60 inches (1525 mm) from the floor for seated viewers. What is the Closest Viewer?
114.3
You have a display with an Image Height of 70 inches (1778 mm), hung at eye level, what is the Closest Viewer?
121.2 inches (3079 mm)
The 4K (2160 p vertical resolution) Image Height is 90 inches (2286 mm), and the audience will be inspecting the fine details of maps. How far away is the Farthest Viewer?
143.3
The Image Height is 90 inches (2286 mm), and the audience will be inspecting detailed maps on a 4K (2160p) display. What is the distance limitation to the Farthest Viewer?
143.3
The 4K (2160 p vertical resolution) screen's height is 96 inches (2438 mm), and the room will be used for PowerPoints with a 4 Percent Element Height as well as technical drawings. How far away is the Farthest Viewer?
152.8
The 4K (2160p) screen's height is 96 inches (2438 mm), and the audience will be inspecting astronomy charts. What is the distance limitation to the Farthest Viewer?
152.8
The Image Height is 90 inches (2286 mm), and the display will be hung 50 inches (1270 mm) from the floor for seated viewers. What is the Closest Viewer?
159.3
Melissa recorded the following US customary measurements in the table below while measuring the projector brightness of her room. Based off of these measurements the projector brightness is ___ lumens. Round your answer to the nearest whole number.
175
Determine the wattage in a circuit measuring 120 volts with 15 amperes of current flow.
1800W
A class _____ SPL meter is sufficient for most field measurements.
2
In the drawing below, there is a flag at the center of the room which identifies four different viewpoints. Match the elevation drawing to the correct view in the room, below.
2, 3, 1, 4
There are four loudspeakers wired in parallel. Two of the loudspeakers each have an impedance of 8 ohms. Two of the loudspeakers each have an impedance of 16 ohms. Calculate the impedance of this parallel circuit.
2.7 ohms
If you are projecting onto a screen that is 10 feet (3 meters) wide and your projection distance to screen width ratio is 2.0:1, what should be the estimated distance of the projector from the screen?
20 feet (6 meters)
The ADM Acuity Factor is a variable that relates to visual acuity, specifically _________ vision.
20/20
On a drawing with a 1/4 inch scale, six inches would equal _____ feet.
24
The Image Height is 48 inches (1219 mm) for a general classroom that will use a 3 Percent Element Height on a 4K (2160p) display. What is the distance limitation to the Farthest Viewer?
288
Although the numbers may need to be tweaked per the application, what is a good starting point for a Percent Element Height?
3%
The Element Height is 1.5 inches (38 mm). Determine the Farthest Viewer.
300
You are using a projector specified as having 4500 lumens onto a matte white 16 x 9 projection screen measuring 96 in. x 54 in. (2438 mm x 1372 mm). What are the upper and lower task lighting limits (in lux)?
3027, 336
The Image Height is 54 inches (1372 mm), and the audience will be viewing PowerPoints at 3 Percent Element Height. What is the distance limitation to the Farthest Viewer?
324
The screen's height is 54 inches (1372 mm), and the audience will be looking at Word documents with a 3 Percent Element Height. How far away is the Farthest Viewer?
324 inches (8232 mm)
You find that that a 16:9 screen has already been installed in a high school classroom. DVDs, PowerPoints, and spreadsheets will be shown with a 4 Percent Element Height. The screen is 80 inches (2032 mm) wide by 45 inches (1143 mm) high. What would be the distance to the Farthest Viewer?
360
The Farthest Viewer is 120 inches (3048 mm) away from the HDTV (1080p) image. The audience is viewing medical imagery. What is the height of the image?
37.7
The image height of an x-ray display used for medical students to practice examinations is 2 feet (610 mm) on a 4K (2160p) display. The farthest distance away from the screen that students should be placed is ___ inches (mm).
38
On a drawing with a 1/50 scale, eight centimeters would equal _____meters.
4
The Farthest Viewer is 240 inches (6096 mm) away from the screen. The audience is viewing PowerPoint slides with a 3 Percent Element Height. What is the height of the image?
40
A 16:9 aspect ratio screen will be 12 feet (3.66 m) wide. The screen material is standard matte white. Ambient light at the screen location has been measured at 2.97 fc (32 lux). Assuming that the viewer task is basic decision making, you would most likely suggest a ____ lumen projector.
5,000
No viewing position in the horizontal plane should exceed __________ degrees from the opposite perpendicular edge of the displayed image.
60
The Farthest Viewer is 103 inches (2616 mm) away, and the viewing task is ADM on a 4K (2160p) image. What is the Image Height?
64.7
The Element Height is 3.2 inches (81 mm). Determine the Farthest Viewer.
640
You measure the background noise level in a conference room at 40 dB SPL A-wtd. What is the target sound pressure level of the audio system?
65
The Farthest Viewer is 420 inches (10668 mm) away from a screen. The audience is viewing PowerPoints with a 3 Percent Element Height. What is the Image Height?
70 inches (1778 mm)
The Farthest Viewer is 120 inches (3048 mm) away from the 4K (2160p) image. The audience is viewing detailed content that requires pixel-level detail. What is the height of the image?
75.4
The Farthest Viewer is 240 inches (6096 mm) away, and the viewing task is ADM on a 1080p image. What is the Image Height?
75.4
The Farthest Viewer is 480 inches (12192 mm) away from the screen. The audience is viewing word processing documents with a 3 Percent Element Height. What is the height of the image?
80
A museum is building a new auditorium to show a short film to guests prior to entering the museum. The film has subtitles which will take up 2 percent of the display. The Farthest Viewer is 36 feet (10973 mm). Given this application, how tall should the screen be?
9 feet (2743 mm)
The farthest viewer is 144 inches (3658 mm) away from a 4K (2160 p vertical resolution) screen. The audience is viewing technical drawings. What is the height of the image?
90.5
The Image Height is 54 inches (1372 mm), and the display will be hung 62 inches (1500 mm) from the floor for standing viewers. What is the Closest Viewer?
93.5
What type of transformer is pictured below?
A 1:2 transformer
The Farthest Viewer Distance for BDM depends on (choose the best answer):
A and B
Which type of projection screen would be a good choice if the ambient light in a room is too high or uncontrollable?
A high-gain screen
Your room design can accommodate a screen with a width of up to 80 inches wide. The screen height is reasonably unrestrained. Your client's video image source produces a 1920 x 1080 resolution. Which of the following screens could be a viable option in this scenario? Choose all that apply.
A screen with an image width of 80 inches and a height of 45 inches
What Viewing Category applies to a space used for medical imagery?
ADM
The Verification Sheet should include (check all that apply):
All except Manufacturer of display
Which of the following is included in the execution section of a consultant-led design? (select all that apply)
All except payment, contract, and budget
If an intended viewer needs to distinguish the finest details displayed, the designer/assessor should use the __________ Viewing Category.
Analytical Decision Making (ADM)
What Viewing Category applies to a space used for word processing and spreadsheets?
BDM
The most common type of Viewing Category is __________.
Basic Decision Making (BDM)
The following chart displays the white and black luminance averages taken from each of the 5 locations as specified in the Projected Image System Contrast Ratio standard. Find the contrast ratio of each location in order to select all of the following viewing tasks that could occur in this room while conforming to the standard.
Basic Decision Making, Passive Viewing
DISCAS addresses the following viewing categories (check all that apply):
Basic, Analytical
Click on the emergency light within the reflected ceiling plan.
Bottom Left
In the drawing below, click on the floorplates which are located closest to the videoscreen.
Can't select anything..
DISCAS defines the minimum distance one can be to a display as the __________, and the maximum distance one can be from a display as __________.
Closest Viewer; Farthest Viewer
What are dip-switches and jumpers used for?
Customizing the behavior of devices
Match the following drawing types with their appropriate drawing names by first clicking on the picture of the drawing and then clicking on the appropriate drawing name.
Detail, Section, Plan, Reflected, Elevation
Which type of drawing shows any item that appears on a specific wall, such as a window, light switches, or wall plate?
Elevation Drawing
What is the most valuable source of information when defining the needs for an AV system?
End user descriptions of the tasks and applications the AV system will support
An elevation view is a required drawing for ADM.
False
There is a Closest Viewer calculation for ADM.
False
Your client notes in the needs analysis that she needs to display large images without going over an already limited budget. Considering just this information, you would most likely recommend a direct display wall to meet her AV needs.
False
Match each type of microphone with the corresponding picture.
Figure it out loser
Which floor layout pictured below requires the display to be positioned higher in order for the viewers in the back row to see the bottom of the image? The seating layout is aligned.
Flat
The Farthest Viewer distance for ADM depends on (select all that apply):
Image Height, Vertical Image Resolution
Mark all of the following that would have an impact on the lowest level of luminance a system is capable of producing:
Maximum light, safety light
Angularly reflective screen surfaces provide performance similar to that of _____.
Mirror
Which type of design drawing is shown below?
Reflected Ceiling Plan
Which of the following circumstances would lead you to choose rear screen projection over front screen projection? Select all that apply.
The presenter will be mobile in front of the screen during presentations., The room has floor to ceiling windows that allow in a lot of ambient light.
Why should the presence of an HVAC unit in a room be taken into account in regards to acoustics when designing an AV space?
The tones from the fans can cause ambient noise
A spot meter measures the luminance in candelas per meter squared (cd/m2), which is the light reflected off of a surface.
True
Based on the average size of the human body, two people would be comfortable sitting at a desk that is 50 inches (1,270 mm) wide, 16 inches (406 mm) deep and moved 48 inches (1,219 mm) away from the room's back wall.
True
DISCAS calculations must use consistent units.
True
There is a Closest Viewer for BDM.
True
Select all of the following that require a calculation using the 20 log function when solving for a change in decibels:
Voltage, Distance, pressure
The executive summary should be _____.
a brief summary of the contents of the program report
An element is __________. (Choose the best answer)
a group of pixels conveying an item of information
The Program Report's executive summary should contain a brief overview of the project and ___.
an overview of the programming process
What is necessary for an installation to be truly successful?
equipment functioning correctly
Ergonomics is the study of ____.
how workplace and equipment comfort, safety, efficiency, and productivity can be improved
The coverage radius for a loudspeaker is 36.33 inches (92.27 cm). What is the loudspeaker spacing for a ceiling mounted distributed system? Round your answer to the hundredth of an inch or centimeter.
i... d... k...
When considering using a video wall as a display solution, you will need a video wall processor for ___________.
image mapping
In BDM, if image height____, viewer distance will ____.
increases; increase
In ADM, lower resolutions will __________ the farthest viewer boundary.
lengthen
A lecture-style classroom will contain a 10 by 6.25 foot (3.05 by 1.91 m) screen, hung at eye level for seated students. The closest viewer was originally positioned 12 feet (3.66 m) from the screen. The interior designer wants to move the front row of seats 5 feet (1.52 m) closer to the screen. Is the new closest viewer position acceptable?
no
In a BDM environment, viewers are more concerned with __________.
overall content than detail
In ADM, higher resolutions will __________ the farthest viewer boundary.
shorten
Who typically performs the preliminary testing?
systems contractor
Visual Acuity is __________.
the ability to perceive and assimilate visual information
The term "% element height" refers to __________.
the height of the element being viewed expressed in relation to the overall image height
The ANSI/INFOCOMM 2M-2010 Standard Guide for Audiovisual Systems Design and Coordination Processes was devised in order for __________?
the industry to agree on what key steps a project should follow
The limits of the vertical visual field indicate that displays should be positioned so that the _____.
top of the image is no more than 30 degrees above the viewers' standard line of sight
The main purpose of a design startup meeting is to______?
update project stakeholders on the status of the project, changes in schedule, and budget.
Which of the following are depicted in a facility drawing? (select all that apply)
viewing sightlines, projection beam path
