Số hiệu tiêu chuẩn
prEN 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/DIS 4869-3:2005)
Ngày phát hành
2005-10-00
Tiêu chuẩn tương đương
DIN EN ISO 4869-3 (2005-12), IDT * S31-062-3PR, IDT * ISO/DIS 4869-3 (2005-10), IDT * OENORM EN ISO 4869-3 (2005-12-01), 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