TANDBERG 119076.02 Acoustics REQUIREMENTS, Requirements in general, PAGE 11/22, Telepresence T3

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Acoustics REQUIREMENTS

TANDBERG

 

Telepresence T3

Acoustics REQUIREMENTS

119076.02 TELEPRESENCE T3 ROOM REQUIREMENTS 12.08

It is essential to have a good acoustic environment for the system to provide the true telepresence experience. This means that there should be sufficient sound insulation to minimize noise from adjacent rooms and to ensure that confidential information is kept within the meeting room. A good choice of acoustic materials for the surfaces and low background noise will ensure comfort in long meetings in addition to high speech intelligibility. You may want to contact acoustic specialists when looking into this matter.

Requirements in general

All walls around the room should have a sound insulation of R’w 48 dB (corresponding to STC 50).

The door should have a sound insulation of Rw 38 dB.

Background noise level should be less or equal to 30 dB(A). This includes both noise from technical installations (air-conditioning in particular) and outdoor traffic noise etc.

Requirements specific for immersive rooms

Absorptive ceiling should have an absorption factor α0.9 in the octave bands 125–4000 [Hz]. This will normally require a mineral wool ceiling of good quality.

Requirements specific for non-immersive rooms

Reverberation time (RT) should be within 0.3–0.6 [s] in the octave bands 125–4000 [Hz].

The acoustic absorption should to some extent be distributed on the walls in addition to the ceiling to avoid flutter-echo effects from parallel walls.

The ceiling is recommended to have an absorption factor 0.9 in the octave bands 125–4000 [Hz]. This will normally require a mineral wool ceiling of good quality.

The walls should at least have sound absorbing fields at the side, front and back walls corresponding to the TANDBERG Immersive Room Package. Both the placement and area should be approximately the same. If perforated or slotted panels are used, the opening area of the panel must be at least 20%.

Sound absorption on walls could also be made with mineral wool wall panels, curtains or other absorptive materials.

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TANDBERG 119076.02 Acoustics REQUIREMENTS, Requirements in general, Requirements specific for immersive rooms, PAGE 11/22