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PC-programvaror för Norsonic ljudmätinstrument; för nedladdning, analys och rapportering.

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PC-programvaror för Norsonic ljudmätinstrument; för nedladdning, analys och rapportering.

Evaluation and post-processing

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The Nor850 offers evaluation options according to common national and international building acoustics standards. Measurements can be extensively documented and evaluated. If you only discover afterwards that one of the individual measurements contains a disturbance, you can exclude it from the averaging. The results are then automatically updated. If the algorithm was unable to correctly set the compensation line during reverberation measurements due to background noise (which is displayed), this can be corrected manually. The software checks all standard criteria and gives you information about where criteria may not have been met.

Standards included:

ISO 16283-1: Acoustics — Field measurement of sound insulation in buildings and of building elements — Part 1: Airborne sound insulation
ISO 16283-2: Acoustics — Field measurement of sound insulation in buildings and of building elements — Part 2: Impact sound insulation
ISO 16283-3: Acoustics — Field measurement of sound insulation in buildings and of building elements — Part 3: Façade sound insulation
DIN 4109-4: Sound insulation in buildings – Part 4: Testing of acoustics in buildings
Acoustics — Measurement of room acoustic parameters — Part 2: Reverberation time in ordinary rooms

Control via the Nor850

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If you control the measurement via WLAN from your laptop/tablet/smartphone, you can stand outside the transmitting/receiving room. If you measure on 1 channel using the quick method (manual panning through the room), it is more convenient to use the internal building acoustics mode in the sound level meter.

Controlling the measurement via the Nor850 has these advantages in particular:

  • Synchronous control of multiple sound level meters:
    Several Nor140, Nor145, Nor150 sound level meters can be controlled synchronously – wirelessly via WLAN. This means that a 2-channel measurement can be carried out wirelessly with a sound level meter in the transmitting room and a second sound level meter in the receiving room.
  • SweptSine measurement technology:
    Using SweptSine measurement technology (measuring the broadband impulse response), level and reverberation time measurements can be carried out despite fluctuating noise. There is no need to measure the background noise level in the reception room at all.

 

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