210-065 · Question #72
An immersive video room requires acoustic remediation because there is noticeable reverb present. What type of acoustic paneling does Cisco recommend to provide remediation?
The correct answer is A. NRC rating greater than 0.75. Cisco recommends acoustic panels with a Noise Reduction Coefficient (NRC) greater than 0.75 to effectively absorb sound and eliminate reverb in immersive video rooms.
Question
An immersive video room requires acoustic remediation because there is noticeable reverb present. What type of acoustic paneling does Cisco recommend to provide remediation?
Options
- ANRC rating greater than 0.75
- BNRC rating greater than 0.5
- CNRC rating less than 0.75
- DNRC rating less than 0.5
How the community answered
(25 responses)- A92% (23)
- B4% (1)
- C4% (1)
Why each option
Cisco recommends acoustic panels with a Noise Reduction Coefficient (NRC) greater than 0.75 to effectively absorb sound and eliminate reverb in immersive video rooms.
An NRC rating greater than 0.75 indicates that at least 75% of incident sound energy is absorbed by the panel material; Cisco specifies this threshold in its immersive room design guidelines to ensure adequate reverberation time (RT60) reduction for high-quality audio capture.
An NRC greater than 0.5 allows too much reflected sound energy and would not sufficiently reduce reverb to meet Cisco's acoustic standards for immersive video environments.
An NRC less than 0.75 means more than 25% of sound is reflected, which is insufficient absorption and would allow audible reverb to persist.
An NRC less than 0.5 means the majority of sound is reflected, which would worsen reverb rather than remediate it.
Concept tested: Acoustic panel NRC requirements for immersive video rooms
Source: https://www.cisco.com/c/en/us/td/docs/telepresence/infra/room_design/cisco_telepresence_immersive_room_design_guide.html
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