TEST REPORT - Ursa

File number: 12/5203-878 Page number: 21.- SCOPE OF THE TESTThe scope of this test is to determinate the sound absorption in accordance with the standardUNE-EN ISO 354:2004, of a sample of URSA Air Zero A2 25 mm thickness mineral wool panels,installed with a cavity of 37 cm.2.- MEASUREMENT EQUIPMENTThe equipment used in the test are the following:• Spectrum analyzer id. number: 103099 (Bruel&Kjaer mod. Pulse)• Microphone calibrator id. number: 103032 (Bruel&Kjaer mod. 4231)• Microphones id. numbers: 103123, 103126, 103128, 103131, 170093 and 170108(Bruel&Kjaer mod. 4943)• Sound sources id. numbers: 103098 (AVM mod. DO12) and 103124 (CESVA mod.BP012)• Noise generator with power amplifier id. number: 103125 (CESVA mod. AP600)• Equalizer id. number: 170092 (INTER mod. EQ-9231)• Thermo-hygrometer id. number: 103021 (Oregon Scientific mod. BA116)• Tape measurer id. number: 103095 (Stanley mod. Powerlock)3.- TEST PROCEDUREP3P2P4F2P5P6The test is carried out in accordance with LGAI TechnologicalCenter procedure C521 0198 based on the European standardUNE-EN ISO 354:2004, ‘Measurement of sound absorption in areverberation room’; reverberation times of the room with andwithout sample are compared. The evaluation and rating isdone in accordance with the European standard UNE-EN ISO11654:1998.F1 P1Around the sample 6 microphones positions (P1 to P6, in figure)and 2 sound sources (F1 and F2) positions are defined.Measurements are carried out exciting the room with pink noise and calculated from themeasured reverberation times as specified in part 5.3.