Conference Call Audio & Visual Setup for Conference Calls 1 — Questions and Answers
Question 1: What is the recommended microphone type for minimizing background noise during a solo conference call?
- Cardioid directional microphone (Correct answer)
- Omnidirectional microphone
- Ribbon microphone
- Carbon microphone
Correct answer: Cardioid directional microphone
A cardioid microphone captures sound primarily from the front, rejecting ambient noise from the sides and rear.
Question 2: Why should participants avoid sitting with a bright window directly behind them during a video conference?
- It creates a silhouette effect, making their face appear dark on camera (Correct answer)
- It causes audio interference
- It reduces internet bandwidth
- It triggers automatic background blur
Correct answer: It creates a silhouette effect, making their face appear dark on camera
Back-lighting causes the camera to expose for the bright background, turning the speaker's face into a dark, unreadable silhouette.
Question 3: What is the ideal camera height for a professional video conference appearance?
- At eye level (Correct answer)
- Slightly below the chin
- Above the head pointing down
- At desk level pointing up
Correct answer: At eye level
Positioning the camera at eye level creates a natural, direct-eye-contact appearance most similar to an in-person conversation.
Question 4: What does PTZ stand for in conference room camera systems?
- Pan, Tilt, Zoom (Correct answer)
- Pixel, Tone, Zone
- Protocol, Transfer, Zero
- Preset, Track, Zoom
Correct answer: Pan, Tilt, Zoom
PTZ cameras can pan left/right, tilt up/down, and zoom in/out, allowing remote-controlled tracking of speakers in a conference room.
Question 5: Which of the following best reduces echo in a conference room with hard surfaces?
- Adding soft furnishings and acoustic panels (Correct answer)
- Using a higher-resolution camera
- Increasing microphone gain
- Switching from VoIP to PSTN
Correct answer: Adding soft furnishings and acoustic panels
Sound-absorbing materials like carpet, curtains, and acoustic foam dampen reflections that cause echo in hard-walled rooms.
Question 6: What is a 'green screen' used for in video conference setups?
- To enable a custom virtual background without hardware limitations (Correct answer)
- To improve camera autofocus
- To reduce bandwidth usage
- To provide a shared annotation surface
Correct answer: To enable a custom virtual background without hardware limitations
A physical green screen provides a uniform background for chroma-key software to replace with any virtual image cleanly.
Conference Call Audio & Visual Setup for Conference Calls 1
What is the recommended microphone type for minimizing background noise during a solo conference call?