Noise curves – NTi Audio XL2 Sound Level Meter User Manual

Page 113

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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

-

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