DESCRIBING THE DIFFERENT LEVELS OF NOISE
Noise is basically defined as ‘unwanted sound’. Everybody dislikes noise, because noise isn’t noise unless its unwanted. Whilst I think about it, perhaps we actually do like noise, because without it, there wouldn’t be a ReSpace Acoustics.
The range of audible sound is measured in dB (decibels) from 0dB to 140dB. 140dB is understood to be the threshold of pain. If you have ever heard 140dB you have most likely taken a wrong turn at the airport and found yourself on the runway, immediately next to a Boing as it takes off. Not nice.
The sound pressure detected by the human ear covers and incredibly wide range, the decibel is used to condense this range into a manageable scale. Below are some examples of various noises and their closely matching dB level: -
0-10dB(A) > THRESHOLD OF HEARING
10-20dB(A) > A WHISPER
20-30dB(A) > STUDIO
30-40dB(A) > A RESIDENTIAL AREA AT NIGHT
40-50dB(A) > QUIET OFFICE
50-60dB(A) > A TYPICAL OFFICE
60-70dB(A) > A NORMAL FACE TO FACE CONVERSATION (NOT WITH BRIAN BLESSED)
70-80dB(A) > AVERAGE TRAFFIC NOISE
80-90dB(A) > HEAVY LORRY AT 6 METRES
90-100dB(A) > A JACKHAMMER
100-110dB(A) > A BURGLAR ALARM
110-120dB(A) > HEAVY ROCK BAND
120-130dB(A) > BOING ON TAKE-OFF
130-140dB(A) > PAINFUL
Interestingly, roughly speaking, every 10dBA increase in sound is perceived by humans as a doubling of loudness. So we perceive a rock band being as being 16 times louder than average traffic noise.
Sound and its ugly friend relentlessly seek the weakest route through walls, floors and ceilings – if air can find its way through, so will they. That is where we come in. So if you need to stop that unwanted noise getting where you don’t want it – let us know @ http://www.respace-acoustics.co.uk/contact/