The Nor150 sound analyser offers a built-in signal generator for excitation of the source room level measurements or for excitation of the reverberation time measurements. The results are measured in accordance with the ISO 16283 Standard requirements. With additional background level measurement results, an on-board calculation of the final airborne sound insulation indices DnT and Rw in accordance with ISO 717 is performed. Of course, the similar possibility is available for impact sound insulation index Ln,w using a tapping machine such as the Nor277.
The reverberation time excitation may alternatively be based on an impulsive source. In any case, results for T15, T20 and T30 are calculated in parallel. The analysers are seamless integrated with the Nor850 software, either as a remote frontend to the Nor850 Measurement System, or as a manual measurement tool for exporting measurement files to the post processing Nor850 Reporting System. Complete calculation of airborne, facade and impact sound insulation indices in accordance with international and national Standards.
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Building Acoustics- Upper frame shows Receiving room level with background noise. Running L/t in lower frame to evaluate if unwanted noise appears in the measurement.
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Building acoustic – rating view 1, calculated sound insulation together with the single number index
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Building acoustic – rating view 2, numerical table to present the single number index along with the spectrum adaption terms.
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Building acoustic – rating view 3, all numerical results of the analysis plus a level overview graph.
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Building acoustic – rating view 4, background noise vs. receiving room levels
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Building acoustic – rating view, The # softkey toggles through specific source positions
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Building acoustic – rating view, R’w rating
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Building acoustic – RT view.
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Two sample pictures out of several views offered for RT measurements.
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Building acoustic – manual adaption of RT time is possible.