RECENT TESTS CARRIED OUT IN AUDIOTEC PROVE THE SUPERIOR IMPACT NOISE ISOLATION OF SYLOMER®.
6/15/2018
The investigation project is carried out to compare different floor systems regarding the noise insulation due to the impact of a 50kg dumbbell thrown form 0,5m height.
Since there is not a standard procedure to carry out this type of test, the next methodology was followed:
- Ciascun sistema acustico, o campione, è stato installato nella camera superiore direttamente sul pavimento (sulla lastra di cemento spessa 14 cm) e le misure sono state prese nella camera inferiore.
- The source room and the receiving room were adjacent to each other and there were completely decoupled. The transmission was only through the floor, with no indirect transmission via wall or ceiling flanks. The system between the two chambers was a standardized reinforced concrete floor slab 14 cm thick.
- The acoustic system or sample was placed in an upper chamber, directly on the floor (on the 14 cm thick concrete slab) and the measurements were made in the lower chamber.
- For the test, a 50 kg dumbbell was dropped on the sample from a height of 50 cm
- The system was large enough to receive the full impact of the dumbbell in each case (between 1 and 2 m²).
- The equivalent sound level was measured for 5 seconds in the lower chamber, collecting during this period the moment of impact of the dumbbell on the sample in the upper chamber.
- Three measurements were made for each sample, averaging the results to obtain a value for each sample.
- Each measurement was made in frequency bands between 16 and 12,500 Hz, thus gathering a very wide spectrum of frequencies (the whole audible range).
- It was also obtained a global value of impact noise level generated with frequency weighting A, LAeq (which is the most common value taken as a reference in noise immission regulations and associates the level with the perception of the human ear), and C, LCeq (which barely attenuates the low frequency).
Below you could download a summary of the different floor systems tested, the results obtained and the main conclusion.
