Pass it on to architects you work with. I have worked with hundreds through the years and not one understood much about musical room noise transmission or treatment requirements.
I’m struggling with comparing NRC and STC to Europe/Africa standards like say Rw/Dw/STI and alpha_w/RT. We use the latter but occasionally get hotel projects in Africa that have American specifications (Typical for hotel brands) and its tricky to get around converting that. So like the hotel guide will say these rooms should have this NRC rating so we presume that means that if the whole room was hard surfaces but had a ceiling of the given rating then that’s sort of the reverberation time target - do that for a bunch of different rooms and material types and we try to take the average. At the end of the day we pretty much ignore their spec and just give them a reasonable spec based on our experience.
A, That process would never work in my industry. We need predictability and consistency. Lower noise floors are critical in recording studios and listening rooms.
What would be the best way to raise STC of a 14' high x 18' wall of a room that has a loud machine? It is probably 5/8" drywall with roll insulation. Would MLV covered by another 5/8" layer of drywall get an STC of above 50?
What is the frequency and amplitude of your noise issues? Noise must first be measured or you are just guessing. Guessing with noise is never a good idea.
I have a specific need. My house is on a slab about 300 yards from the highway moving up over an overpass of a neighborhood street. I notice a steady low frequency hum when I use a microphone. Am I banned to have to record direct into my laptop and skip microphones altogether? Thanks.
@Dave - Are you recording only electronic instruments? Have you tried using a high-pass filter or a notch filter to kill the "hum" from the microphone? A steady hum may be an indication of an electrical grounding/shielding issue. What frequency is the hum? Highway noise usually varies a lot, when you say "steady hum" it doesn't seem like it would only highway noise. Either way, good luck.
This was helpful for studying for my interior design exam thanks for sharing with us
Pass it on to architects you work with. I have worked with hundreds through the years and not one understood much about musical room noise transmission or treatment requirements.
Thank you for this!
Glad it was helpful!
I’m struggling with comparing NRC and STC to Europe/Africa standards like say Rw/Dw/STI and alpha_w/RT. We use the latter but occasionally get hotel projects in Africa that have American specifications (Typical for hotel brands) and its tricky to get around converting that. So like the hotel guide will say these rooms should have this NRC rating so we presume that means that if the whole room was hard surfaces but had a ceiling of the given rating then that’s sort of the reverberation time target - do that for a bunch of different rooms and material types and we try to take the average. At the end of the day we pretty much ignore their spec and just give them a reasonable spec based on our experience.
A, That process would never work in my industry. We need predictability and consistency. Lower noise floors are critical in recording studios and listening rooms.
I didn’t know about this
What would be the best way to raise STC of a 14' high x 18' wall of a room that has a loud machine? It is probably 5/8" drywall with roll insulation. Would MLV covered by another 5/8" layer of drywall get an STC of above 50?
What is the frequency and amplitude of your noise issues? Noise must first be measured or you are just guessing. Guessing with noise is never a good idea.
Good stuff. Thanks.
Glad you enjoyed it
I have a specific need. My house is on a slab about 300 yards from the highway moving up over an overpass of a neighborhood street. I notice a steady low frequency hum when I use a microphone. Am I banned to have to record direct into my laptop and skip microphones altogether? Thanks.
@Dave - Are you recording only electronic instruments? Have you tried using a high-pass filter or a notch filter to kill the "hum" from the microphone? A steady hum may be an indication of an electrical grounding/shielding issue. What frequency is the hum? Highway noise usually varies a lot, when you say "steady hum" it doesn't seem like it would only highway noise. Either way, good luck.
D, You need to measure frequency and amplitude of the noise. Guessing with noise is a fools' game.