CED Audio-Visual & Production Design 1 — Questions and Answers
Question 1: What does DMX stand for in event lighting control systems?
- Digital Multiplex (Correct answer)
- Dynamic Matrix Exchange
- Direct Media Crossover
- Dual Mode Xenon
Correct answer: Digital Multiplex
DMX stands for Digital Multiplex and is the industry-standard protocol used to control stage lighting fixtures and effects.
Question 2: Which microphone type is most appropriate for a keynote speaker who needs to move freely across a large stage?
- Condenser microphone on a stand
- Lavalier (lapel) wireless microphone (Correct answer)
- Shotgun microphone
- Dynamic handheld microphone on a stand
Correct answer: Lavalier (lapel) wireless microphone
A lavalier wireless microphone clips to the speaker's clothing and transmits wirelessly, allowing complete freedom of movement while maintaining consistent audio pickup.
Question 3: What is the primary purpose of a confidence monitor in event production?
- To display the presenter's slides so they can see them while facing the audience (Correct answer)
- To record the event for post-production editing
- To relay real-time audience reactions to the production team
- To control audio levels for the presenter on stage
Correct answer: To display the presenter's slides so they can see them while facing the audience
A confidence monitor faces the presenter and displays their slides or notes, allowing them to maintain eye contact with the audience without turning to look at the main rear screen.
Question 4: In event projection, what does 'throw distance' refer to?
- The maximum weight a projector can safely be rigged at overhead
- The distance between the projector lens and the projection surface (Correct answer)
- The angle at which light exits the projector aperture
- The brightness output of a projector measured in lumens
Correct answer: The distance between the projector lens and the projection surface
Throw distance is the measurement from the projector lens to the projection screen, which determines the image size achievable at a given zoom setting.
Question 5: What is the standard broadcast video frame rate used in the United States?
- 24 fps
- 25 fps
- 29.97 fps (30 fps) (Correct answer)
- 48 fps
Correct answer: 29.97 fps (30 fps)
The US standard for broadcast video is 29.97 frames per second (rounded to 30 fps), derived from the NTSC color standard.
Question 6: What does audio 'mixing' refer to in live event production?
- Physically combining audio cables into a single output connector
- Balancing and blending multiple audio channels into a cohesive final output (Correct answer)
- Converting digital audio signals to analog format
- Distributing audio simultaneously to multiple venue zones
Correct answer: Balancing and blending multiple audio channels into a cohesive final output
Audio mixing is the process where an engineer balances individual sound sources in volume, EQ, and effects, then combines them into a cohesive stereo or multi-channel program output.
Question 7: What is the purpose of a DI (Direct Injection) box in event audio production?
- To amplify audio signals for large venue coverage
- To convert an unbalanced high-impedance signal to a balanced low-impedance signal (Correct answer)
- To record audio to a digital storage medium
- To synchronize audio and video signals
Correct answer: To convert an unbalanced high-impedance signal to a balanced low-impedance signal
A DI box converts an unbalanced, high-impedance signal (such as from a guitar or keyboard) to a balanced, low-impedance signal suitable for long cable runs to the mixing console without noise interference.
CED Audio-Visual & Production Design 1
What does DMX stand for in event lighting control systems?