(10-14-2013, 05:44 PM)cpaprap Wrote: Philips Respironics
System One 460P
RemStar Pro with C-Flex+
Mode: CPAP 10cmH2O
How much noise should this machine make? It's so loud I have to wear ear plugs to get to sleep. CPAPRAP
Every person has a different interpretation of loud. Your machine should run at about 30dba, which is a little higher than a Resmed S9 which is about 24dba.
I have an S9 and it sounds almost silent to me. Possibly there is something
wrong with your machine if it is
much higher than 30dba, which is described as the noise level of a whisper.
For comparison:
Decibel Level (dB) Source
140 threshold of pain: gunshot, siren at 100 feet
135 jet take off, amplified music
120 chain saw, jack hammer, snowmobile
100 tractor, farm equipment, power saw
90 OSHA limit - hearing damage if excessive exposure to noise levels above 90 dB
85 inside acoustically insulated tractor cab
75 average radio, vacuum cleaner
60 normal conversation
45 rustling leaves, soft music
30 whisper
15 threshold of hearing
0 acute threshold of hearing - weakest sound