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Goal: To allow audience members to easily hear and understand the presenter.
- Related Codes & Standards
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- Tips/Considerations
- Recommended reverberation time is 1 second.
- Beware of potential noise impact to your space from exterior sources and/or excessive HVAC noise which can greatly degrade speech intelligibility. To help protect your design, the NC level should not exceed 25 to 30. When specifying NC, specify an actual rating, such as NC 30, rather than a range, such as NC 25-30. Although specifying a lower number will ensure minimal background noise, it might be cost prohibitive to achieve. Be realistic about the amount of acceptable noise and the project's budget when specifying an NC level. NC is not a consideration for an outdoor space.
- The front wall and ceilings can be reflective, enabling sound to reach everyone.
- Absorptive material on the back and side walls will help reduce the reverberation time and unwanted reflections.
- If possible, try to avoid parallel surfaces, which can cause flutter echoes. Consider splaying or canting the sidewalls.
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