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.

摘要：

KTV包间内的噪声污染主要在低频63 Hz～125 Hz，噪声级一般可以超过105 dB，其噪声源边界排放噪声也超出了相应的限值，针对KTV包间的噪声污染，介绍了目前比较成熟的噪声处理方案。首先KTV包间内的墙壁、顶棚、门和地板隔声处理；其次是介绍包间采取的吸声材料和广泛应用的吸声结构；包间音箱设备的隔振处理；包间内减少声波的泄露；以及新型局域共振声子晶体的理论及应用。

关键词: 声学, KTV低频噪声, 隔声, 吸声, 隔振, 声子晶体