Acoustic calculation
Ventilation noise level in a room, to SN 2.2.4/2.1.8.562-96
Noise source
Network components
m
off
off
Total attenuation through the network:17.0 dB
Room
Results
Requirements are met
Noise level at the workstation: 39.8 dB(A)
Limit for Private office: 45 dB(A)
Octave spectrum
63
125
250
500
1000
2000
4000
8000
Permissible level 45 dB(A)
| Frequency, Hz | 63 | 125 | 250 | 500 | 1000 | 2000 | 4000 | 8000 |
|---|---|---|---|---|---|---|---|---|
| Fan | 79 | 76 | 74 | 72 | 69 | 65 | 62 | 59 |
| Indoors | 44 | 41 | 39 | 37 | 34 | 30 | 27 | 24 |
| dB(A) | 18 | 25 | 31 | 34 | 34 | 32 | 28 | 23 |
Help
dB(A) — A-weighted sound level, matched to the response of human hearing.
Octave bands — frequency bands for noise analysis (63–8000 Hz).
Calculated to SN 2.2.4/2.1.8.562-96 “Noise in the workplace”.