Reverberation Time
Version 3 of NoiseWorks contains the procedures and calculation methods required by the ISO 16283 series, and supports the measurement of reverberation time as required by ISO 3382-2.
In Real-Time execution mode, the NWWin3 software completely controls all the measurement phases of the Larson Davis LxT, 831 or 831C sound level meter in order to allow a predefined sequence of interrupted noise or impulse acquisitions, from which the reverberation times for the individual octave or 1/3 octave bands are then automatically calculated and displayed in both graphic and numerical form, complete with 5 quality indicators to indicate the correct execution of the measurement.
With the direct import mode, the NWWin3 software connects via USB interface to the Larson Davis 831 or 831C sound level meter and in the ‘RT60 Measurement’ mode, the reverberation measurement files previously acquired in the field are downloaded directly with the sound level meter equipped with the appropriate 831-RT option.
The Post-processing mode was added to NWWin3 more recently, in order to allow a recalculation of the reverberation times on measurements already acquired previously or calculated directly by the sound level meter. The same mode can be used to correct a posteriori, some particularly critical situations that have escaped the various controls of the automatic calculation algorithms.