Getai noise should be assessed objectively
by Richard Seah Siew Sai
Published on ST on 21 April
"In my earlier letter, I pointed out that there are objective and scientific ways of measuring sound levels, in terms of decibels. Why is getai noise assessed subjectively by police officers? Are these officers aware that noise travels upwards and what might sound acceptable at ground level is much louder on higher floors?"
Hahaha, I just can't help but start laughing when I read this paragraph. If this joker can prove that power increases with distance and height, he will win the next Nobel Prize! What a dumb comment, and ST Forum actually publishes such a lousy article!!
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6 comments:
What the writer said about noise getting louder is true. You can prove this by going up to say 20th floor on a block of flats next to a road and listen to the traffic.
Please do not laugh at other people until you have experienced the reality.
Those who have lived in the higher levels know this for a fact.
Hi Kenneth!
Do take note of the inverse square law of power, ie. power is proportional to d^(-2).
I am amused for the fact that the writer asked for an objective measure of noise levels but cannot get his basis right.
And many people believing in the wrong thing doesn't really become a fact.
=)
Like you I once thought that high floor = less noise. I selected a high floor to live and found out differently. Today I live on the lower floor because of this reason.
The Straits Times also did make a report many years back on this noise issue and confirmed that contrary to commonsense it is indeed noisier at the higher levels.
Factors like the echo effect from other buildings and the thinnier atmosphere at the higher level were surmised to explain for this.
All this is over a trivia really but I do hope your blog will be source of good advice for others.
I agree with Kenneth.
You r oversimplifying things by using the inverse relationship. U hv to consider multipath effects, absorption,transnission & reflection constants of the surrounding, and other sounds around the area.
It is difficult to model and since human ears, not electronic receivers, are the receivers of such noise, you have to take into considerations the human perception of noise and human tolerance with noise. You must also note the non-scientific factors like manners and culture.
IMO, it's the person's experience that counts since he is the one exposed to the noise.
Reflection coefficient <= 1
Constructive Interference only occurs when the principal and reflected paths are in phase.
Simply put, it would be difficult to prove scientifically that the resultant noise level increase monotonously with height.
Hey peeps, I don't wanna continue this debate. In any case, if you can prove what you postulated (noise levels increase with height), you may be in line to become the next Nobel Prize winner.
I will congratulate you sincerely when that day arrives!
Cheers!
"If you can prove what you postulated (noise levels increase with height), you may be in line to become the next Nobel Prize winner."
Oh please do not give us the credit. We are nowhere at your level of intelligence and learning to be considered for Nobel Prize.
You are so right and we are all so wrong.
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