This Standard specifies a method for measuring the insertion loss of ear-muff type hearing protectors using an acoustic test fixture. The method may be used to investigate production spreads of performance as part of type approval or certification procedures, to investigate the change of performance with age, to ensure that ear-muff hearing protector samples submitted for subjective testing of attenuation according to ISO 4869-1 have performance typical of the type.
Số hiệu tiêu chuẩn
DIN EN ISO 4869-3
Tên tiêu chuẩn
Acoustics - Hearing protectors - Part 3: Measurement of insertion loss of ear-muff type protectors using an acoustic test fixture (ISO 4869-3:2007); German version EN ISO 4869-3:2007
Ngày phát hành
2007-09-00
Tiêu chuẩn tương đương
EN ISO 4869-3 (2007-07), IDT * ISO 4869-3 (2007-07), IDT * TS EN ISO 4869-3 (2015-02-20), IDT
Từ khóa
Acoustic measurement * Acoustic testing * Acoustics * Closed test rooms * Convergence * Data * Definitions * Ear muffs * Ear protectors * Ear-muff type wearing protectors * Inspection * Insulations * Measurement * Measuring equipment * Measuring techniques * Methods * Microphones * Noise * Noise reduction * Pressing force * Procedures * Quality control * Safety devices * Shafts * Signals * Sound * Sound insulation * Sound intensity * Sound levels * Sound pressure level * Test apparatus * Testing * Tests * Tunnels * Processes
.jpg&w=145&h=165){kind=logo}
.png)
.jpg){kind=logo}
.jpg){kind=logo}
-_-logo.png){kind=logo}
