Traffic noise is mainly has three kinds: one kind is the automobile tire and the ground friction sound. Two is the automobile engine, exhaust pipe, automotive transmission system sound. Three is the car horn and brake, deceleration zone and bearing impact vibration induced by vehicle voice. Hollow glass structure and traffic noise into low-frequency resonance phenomenon, the low-frequency noise is very not ideal. After our test, the largest amount of low frequency noise is only 19dB, the overall noise is less than 30db. If the outdoor noise above 75db, the indoor acoustic environment one can imagine is very troublesome, so must use insulation glass insulation structure of professional. Rance soundproof window by the national building materials testing center detection of sound transmission loss is 42 dB, can effectively reduce the frequency of especially low frequency noise, such as the 125HZ down 34 dB, 39 DB 250HZ reduction, specially designed for the family, the perfect solution for noise annoyance. Hope the noise pollution can be improved.