Yamaha All New R15 VVA Stationary Noise
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资源简介：
Difference of Stationary Noise Level with Three Muffler Variation (standard, Modification with dB Killer attached and off)
The measurement use the UN ECE Regulation 41, using Bruel & Kjaer 2250 as the main instrument .
The data show that the modification of muffler is effecting the noise level, and the dB Killer is reducing it in significant value.
创建时间：
2020-06-23
