ujikebisingan

http://indomonster.com/ujikebisingan

is an instrument, Noise portable stand-alone for the measurement and analysis of sound pressure level emitted by stationary vehicles on the engine speed adjusted. Input parameters include the type of engine ( No. of strokes) and No. of cylinders. It can be programmed for 2 or 4 stroke and 1 to 8 cylinders.
The Stationary Exhaust Noise Test Procedure for servicing of motor vehicles was first conceived by the Environment Committee of Motor Vehicles ( MVEC, the precursor to LTEC) in 1999 to introduce a national approach to measuring exhaust noise. Previously, some jurisdictions have developed their own approaches and differences in approach could lead to inconsistencies in the results of the test.
Uniform approach ensures that the vehicle owner will get an accurate assessment of whether their vehicles in accordance with national noise standards. The noise emission meets the standards for motor vehicles adopted the United Nations Economic Commission for Europe ( UNECE) Regulations to the noise of a motor vehicle. UNECE Regulation refers to ISO 5130 " Acoustics - Measurement of Sound Pressure Level Transmitters by Stationary Vehicles " which provides for vehicle noise testing procedures.

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