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- W2081797620 abstract "Sound pressure levels in the receiving room while testing airborne sound insulation performance are varied by the measuring points. This may increase the measurement error, then decrease the measurement reliability. With this reason the research has carried out on the method to reduce deviations of sound pressure level in the ISO type rectangular laboratory focusing on the measurement of airborne sound insulation performance. Tests were made to see the effect of sound absorption in the receiving room, loudspeaker locations, microphones locations and flanking transmission path. Consequently, it was resulted that sound absorption in the receiving room and the loudspeaker location have influence on the sound level deviations especially in the low frequency. The microphone location was very important to get measurement reliability. The effective measuring point, which the sound level difference with average sound pressure level is within 2 dB, could yield most reliable average sound pressure level. Therefore it is necessary to find the effective measuring points in the receiving room. Flanking transmission path should be sealed using sound absorber or magnet etc. to prevent from lowering the sound insulation performance." @default.
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- W2081797620 date "2014-01-20" @default.
- W2081797620 modified "2023-09-26" @default.
- W2081797620 title "An Experimental Study to Improve Measurement Reliability for the Airborne Sound Insulation Performance by Laboratory Test" @default.
- W2081797620 doi "https://doi.org/10.5050/ksnve.2014.24.1.035" @default.
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