Acoustic & noise control
Focus on the one space shown in the attachment for Parts A & B
Audio Studio #2 (154).
Focus on general NOISE CONTROL strategies for this space, including the following characteristics:
– Think about the topics we learned about in class & how they apply to this type of space.
* Assumption what the sound sources are in the room ( including the mechanical equipment).
* Sound generation and Propagation
* Sound fundementals
* Noise Exposure and Criteria
* correlated and uncorrelated sources
* Transmission loss
o What partition transmission loss ratings & example assembly types are appropriate?
o What specific noise sources (occupants, MEP, etc.) should the client be on the look out for in this type of space?
o What indoor sound levels/criteria are appropriate for this type of space?
Do not focus on general ROOM ACOUSTIC strategies (e.g., room shaping, surface materials,reverb, etc.). The focus is noise control.
Assume your clients have a basic understanding of acoustics. Do not spend time explaining fundamental concepts (e.g., frequency, units like dBA, or metrics like NC). If there are new
metrics/units we have not used in class you can briefly show them.
( provide some equations, charts, example and calculation example related to the space provided)
Examine the proposed mechanical system to this space and the following acoustical characteristics:
o Are the supply and return airflows suitable for this noise criteria at the diffusers/returngrilles? (Refer to ASHRAE Ch. 48 Table 9)
Advanced Noise Control.
o Are the ducts sized appropriately to meet this noise criteria? (Refer to ASHRAE Ch. 48 Table 8).
o Comment on the general layout of the system (location of VAV box, transitions, diffuser placement.)
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