Metal Sound Barrier Wall

Metal Sound Barrier Wall

Metal sound barrier wall also known as soundproof walls. The insertion of facility between the sound source and the receiver cause a significant additional of acoustic wave propagation, thereby weakening the noise in certain area of receiver, and such a facility is called sound barrier.

Sound barrier is mainly used for highways, elevated road, urban light rail subway and other traffic municipal facilities in the noise reduction, can be also used for factories and other noise areas.

Sound Reduction Coefficient

Frequency (Hz)	100	125	160	200	250	315	400	500	630
NRC	0.22	0.25	0.28	0.34	0.41	0.43	0.48	0.73	0.89
Frequency (Hz)	800	1000	1250	1600	2000	2500	3150	4000	5000
NRC	0.86	0.84	0.77	0.83	0.84	0.77	0.81	0.80	0.83

Sound Transmission Class

Frequency (Hz)	100	125	160	200	250	315	400	500	630
NRC	15.6	22.2	15.9	26.0	26.1	32.9	32.2	36.1	37.8
Frequency (Hz)	800	1000	1250	1600	2000	2500	3150	4000	5000
NRC	41.2	42.3	37.8	40.0	41.7	39.4	38.5	39.10	40.0