Please create an account to participate in the Slashdot moderation system

 



Forgot your password?
typodupeerror
×

Comment Do a measurement first!!! (Score 4, Informative) 474

First you must measure how many decibel of attenuation you need. For this you need a sound level meter: If you don't have one at hand, a microphone + PC sound card + Audacity can be used as well (many apps for Android/Ipad are also available for this). Measure two sound spectra at your location: the first one with traffic noise present, the second one when you feel that background noise level is comfortable for you. The difference between the two spectra will tell you how much attenuation you need, and which frequencies need to be attenuated more.

Next compare the attenuation offered by each possible solutions (noise attenuationg windows, wall insulation, etc.) against the attenuation you need to achieve. If it isn't enough, move away, otherwise try installing the best solution you can afford.

Noise should be stopped before it enters the walls of your home: Once it is there, it can follow unsuspected paths to reach your ears (pipes, wall joints, etc.). The best way to stop it is to increase the acoustic impedance of external walls and windows.

Attenuation could be increased using viscoelastic materials like rubber: however they are best for attenuating high frequencies.

Comment Wrong translation!!! (Score 1) 57

> who had the impressive motto 'Probando e Reprobando,' which in English means 'testing and retesting.'

Absoultely not...the motto of Accademia del Cimento was 'provando e riprovando', and it is a quote from Dante's Divine Comedy. You can find it at the beginning of the third Canto of the Paradiso:

Quel sol che pria d'amor mi scaldò 'l petto,
di bella verità m'avea scoverto,
provando e riprovando, il dolce aspetto;


Whoever is familiar with ancient italian will correctly translate it as 'testing and rejecting', and not as 'testing and retesting'.

This verse became the motto of Accademia del Cimento for an obvious reason: a scientist makes an experiment, and after the result he rejects all theories who are in conflict with the experimental result. For sure he will not go on repeating indefinitely the experiment...
The motto can be found nowadays as a motto in the arms of the Italian Society of Physics

Slashdot Top Deals

"Only the hypocrite is really rotten to the core." -- Hannah Arendt.

Working...