Dear Quieter Oahu,
I applaud your work on Quieter Oahu.
Also I would like to bring to your attention inaudible noise which can be much more dangerous to health. Unfortunately most people are not aware.
On 2009 our legislators revised the noise law and require noise enforcer utilize both dB(A) and dB(C) filters to measure noise. Both measurements shall not be over 50dB during the nighttime.
The law makers understood the nature of the noise: inaudible, low-frequency, vibrating subjects, travelling through thick walls, causing adverse health effects.
This kind of noise is similar to the noise generated by wind turbines which drives people to abandon their homes.
A few weeks ago a Honolulu noise control official performed a noise measurement in my home located in the Ala Moana area and found 54 dB(A) and 64 dB(C), 14dB above safe level. However the officer said there is nothing he can do to bring the noise down to the safe level.
I would appreciate if you help to investigate into the matter and bring this awareness to the general public.
Quieter O'ahu Response:
We are aware of the dangers to health of inaudible noise, although many are not, and appreciate your taking the time to drop us your email as a reminder. We are happy to publish your email in full on our Noise Blog, and will also provide a reference to our website where we discuss different ways of measuring noise, including the dB(c) measurements, and their meaning.
Please let us know if we can help in any other way.
Our Quieter O'ahu web page discussing how noise is measured can be found here. Please explore our website for other relevant information on the nature of noise and its effects on health.