FprEN ISO 7235

Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, flow noise and total pressure loss (ISO 7235:2003)

2009-03-00

Hết hiệu lực

DIN EN ISO 7235/A1 (2009-05), IDT * S31-127PR, IDT * ISO 7235 (2003-08), IDT * OENORM EN ISO 7235/A1 (2009-04-15), IDT

EN ISO 7235 (2009-08)

EN ISO 7235 (2009-08) * FprEN ISO 7235 (2009-03)

Absorption * Acoustic measurement * Acoustic testing * Acoustics * Air ducts * Air flow * Attenuation constant * Cables * Calibration * Canals * Checking equipment * Classes * Clay * Corrrections * Damping * Ducts * Engine silencers * English language * Equipment * External noise * Fans * Flow * Graphic symbols * Handling * Insertion loss * Laboratories * Laboratory testing * Laboratory tests * Loudspeakers * Measurement * Measurement circuits * Measuring ducts * Measuring environment * Measuring equipment * Measuring instruments * Measuring objects * Measuring techniques * Microphone arrangement * Microphones * Mineral wool * Noise * Noise abatement * Noise (environmental) * Noise measurements * Performance tests * Precision * Pressure drops * Reflection * Reverberation rooms * Silencers * Sonic testing * Sound * Sound absorption * Sound fields * Sound intensity * Sound level * Sound levels * Sound meters * Sound pressure * Sound pressure level * Sound sources * Structure-borne noise * Symbols * Test furnaces * Test results * Testing * Testing set-ups * Transmittances * Ventilation ductwork * Ventilation equipment * Walls * Sewers * Qualification tests * Channels * Extraneous noise * Testing devices * Test benches

91.120.20. Cách âm. Chống rung

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