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Chapter 2
Room Requirements for the TX9000 and TX9200 Systems
Acoustic Considerations For the TX9200
For the immersive meeting environment, the specifications are:
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Meeting rooms large enough to accommodate a TX9200 built of drywall, suspended ceilings, and
carpeting that have exposed, parallel hard surfaces, usually promote reverberation to levels greater than
500ms to nearly 900ms (1.2 seconds), creating echoes in the room. The echo cancellation in the TX9200
codec may compensate for this in the audio broadcast to remote participants; however, local sound
quality will be degraded in this type of unremediated acoustic environment. Because of this, acoustic
treatment is required for TX9200 rooms.
There are two options for acoustic treatment, installing asymmetrical acoustic panels or applying
acoustic treatment to all wall surfaces in the room.
Asymmetrical Acoustic Wall Treatment
As shown in
that no bare wall surfaces face each other. This option provides more natural (versus less recording
studio-like) sound characteristics in the room.
Figure 2-10
Asymmetrical Treatment with Acoustic Panels
1
OL-27038-01
Ambient Noise less than 45 dBA (ideally at 36 dBA)
RT60 less than 500 ms (not to exceed 700 ms for non voice critical frequencies)
Noise Criteria no greater than 30
Figure
2-10, staggered acoustic panels are placed on the opposing drywall surfaces such
Cisco TelePresence System TX9000 and TX9200 Assembly, Use & Care, and Field-Replaceable Unit Guide
Acoustic Considerations For the TX9200
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