关键词: 声学, KTV低频噪声, 隔声, 吸声, 隔振, 声子晶体

Abstract:

In KTV rooms, the noise pollution is mainly reflected in the low frequency between 63 Hz and 125 Hz, the volume can reach at 105dB or more, and the noise level produced from noise source boundary is above the threshold level causing the environment contradiction. There are some solutions in KTV rooms for low-frequency noise processing, and the mature noise treatment programs have been introduced. Firstly, sound insulation in KTV rooms which against its walls, ceilings, doors and floors；followed by the application of sound-absorbing material and its structure vibration isolation characteristics; the vibration isolation on audio devices; reduce acoustic leakage in rooms; the theory of phononic crystal plate with periodic novel spiral resonators and its application.