Latex could silence noisy neighbours

 作者:南郭榍     |      日期:2019-03-08 01:12:01
By Colin Barras THE rumbling bass from the party animals next door need no longer keep you awake at night. Cheap and effective soundproofing can be yours in the shape of novel tiles made from latex and a few plastic buttons. Low-frequency sounds, especially, seem to seep through most domestic walls. That’s because of their long wavelength, says Zhiyu Yang at the Hong Kong University of Science and Technology in Kowloon. Bass sounds at 100 hertz have a wavelength of over 3 metres in air, “and several times longer in solids”, he says. To block out all sound,