Room Loudness Sones Reference Chart

System Design Guidelines for Room Loudness. See Sound Loudness Design Equations for relative equations.

Room Type
Sones
Room Type
Sones
Auditoriums
Indoor sports activities
Concert and opera halls
1.0 to 3
Gymnasiums
4 to 12
Stage theaters
1.5 to 5
Coliseums
3 to 9
Movie theaters
2.0 to 6
Swimming pools
7 to 21
Semi-outdoor amphitheaters
2.0 to 6
Bowling alleys
4 to 12
Lecture halls
2.0 to 6
Gambling casinos
4 to 12
Multi-purpose
1.5 to 5
Manufacturing areas
Courtrooms
3.0 to 9
Heavy machinery
25 to 60
Auditorium lobbies
4.0 to 12
Foundries
20 to 60
TV audience studios
2.0 to 6
Light machinery
12 to 36
Churches and schools
Assembly lines
12 to 36
Sanctuaries
1.7 to 5
Machine shops
15 to 50
Schools & classrooms
2.5 to 8
Plating shops
20 to 50
Recreation halls
4.0 to 12
Punch press shops
50 to 60
Kitchens
6.0 to 18
Tool maintenance
7 to 21
Libraries
2.0 to 6
Foreman’s office
5 to 15
Laboratories
4.0 to 12
General storage
10 to 30
Corridors and halls
5.0 to 15
Offices
Hospitals and clinics
Executive
2 to 6
Private rooms
1.7 to 5
Supervisor
3 to 9
Wards
2.5 to 8
General open offices
4 to 12
Laboratories
4.0 to 12
Tabulation/computation
6 to 18
Operating rooms
2.5 to 8
Drafting
4 to 12
Lobbies & waiting rooms
4.0 to 12
Professional offices
3 to 9
Halls and corridors
4.0 to 12
Conference rooms
1.7 to 5
Board of Directors
1 to 3
Halls and corridors
5 to 15

 

Room Type
Sones
Room Type
Sones
Hotels
Public buildings
Lobbies
4.0 to 12
Museums
3 to 9
Banquet rooms
8.0 to 24
Planetariums
2 to 6
Ball rooms
3.0 to 9
Post offices
4 to 12
Individual rooms/suites
2.0 to 6
Courthouses
4 to 12
Kitchens and laundries
7.0 to 12
Public libraries
2 to 6
Halls and corridors
4.0 to 12
Banks
4 to 12
Garages
6.0 to 18
Lobbies and corridors
4 to 12
Residences
Retail stores
Two & three family units
3 to 9
Supermarkets
7 to 21
Apartment houses
3 to 9
Department stores (main floor)
6 to 18
Private homes (urban)
3 to 9
Department stores (upper floor)
4 to 12
Private homes (rural & suburban)
1.3 to 4
Small retail stores
6 to 18
Restaurants
Clothing stores
4 to 12
Restaurants
4 to 12
Transportation (rail, bus, plane)
Cafeterias
6 to 8
Waiting rooms
5 to 15
Cocktail lounges
5 to 15
Ticket sales office
4 to 12
Social clubs
3 to 9
Control rooms & towers
6 to 12
Night clubs
4 to 12
Lounges
5 to 15
Banquet room
8 to 24
Retail shops
6 to 18
Miscellaneous
Reception rooms
3 to 9
Washrooms and toilets
5 to 15
Studios for sound reproduction
1 to 3
Other studios
4 to 12

Note: Values showns above are room loudness in sones and are not fan sone ratings.

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