Noise curves – NTi Audio XL2 Sound Level Meter User Manual
Page 113
113
Noise Curves
Recommendations
Type of Room -
Space Type
Recom-
mended
NC and
RNC
Curve
Equivalent
Sound
Level
RC curve
Concert halls
15-18
-
-
Small auditoriums
25-30
35-39
-
Large auditoriums
20-25
30-35
-
Broadcast studios
15-25
16-35
-
Drama theaters
20-25
30-35
-
Private residences
25-40
35-48
25-30(N)
Schools
25-35
35-40
25-40 (N)
Hotels
25-50
35-57
25-45 (N)
Offices
25-40
35-48
25-35 (N)
Type of Room -
Space Type
Recom-
mended
NC and
RNC
Curve
Equivalent
Sound
Level
RC curve
Conference rooms
25-35
35-44
25-35 (N)
Hospitals and clinics
25-45
35-52
25-40 (N)
Movie theaters
30-40
39-48
-
Churches
30-35
39-44
25-35 (N)
Courtrooms
30-35
39-44
25-35 (N)
Libraries
30-35
44-48
30-40 (N)
Restaurants
40-45
48-52
-
Light maintenance
shop
45-55
52-62
-
Shops and garages
50-60
57-67
-