Weighting VIs

Weighting VIs

Owning Palette: Sound Level VIs

Use the Weighting VIs to apply a weighting filter on time-domain signals sampled at specific rates. You can choose from acoustic, telecommunication, and radiocommunication filters.

The VIs on this palette can return general LabVIEW error codes or specific sound and vibration error codes.

When combined with any National Instruments DSA device, the Weighting VIs offer compliance with the following standards:

A-, B-, and C-Weighting Filters

ANSI Standards

• ANSI S1.4-2014

ISO/IEC Standard

• IEC 61672-1:2013

JIS Standard

• JIS C 1509-1:2005

Radiocommunications Weighting Filters

• ITU-R 468-4

Telecommunications Weighting Filters

• ITU-T O.41

Palette Object	Description
SVT A, B, C Weighting Filter (Fixed Rates)	Applies the selected A-, B-, and C- weighting to scaled signal [EU]. This VI complies with ANSI S1.4-2014 and IEC 61672-1:2013 standards. Each instance of this VI maintains its own state; use the N Waveforms instance of this VI to process an array of channels. This VI operates on time-continuous data; it resets on a discontinuity. Wire data to the scaled signal [EU] input to determine the polymorphic instance to use or manually select the instance.
SVT Radiocommunications Weighting Filter (Fixed Rates)	Applies the selected radiocommunications weighting filter to a single waveform or multiple waveforms. This VI complies with the ITU-R 468-4 standard. Each instance of this VI maintains its own state; use the N Waveforms instance of this VI to process an array of channels. This VI operates on time-continuous data; it resets on a discontinuity. Wire data to the scaled signal [EU] input to determine the polymorphic instance to use or manually select the instance.
SVT Telecommunications Weighting Filter (Fixed Rates)	Applies the selected telecommunications weighting filter to a single waveform or multiple waveforms. This VI complies with ITU-T O.41 and Bell System Technical Reference 41009 standards. Each instance of this VI maintains its own state; use the N Waveforms instance of this VI to process an array of channels. This VI operates on time-continuous data; it resets on a discontinuity. Wire data to the scaled signal [EU] input to determine the polymorphic instance to use or manually select the instance.





Subpalette	Description
Weighting (Arbitrary Rate) VIs	Use the Weighting (Arbitrary Rate) VIs to apply an A-, B-, or C-weighting filter on time-domain signals and to determine the maximum frequency within tolerances according to the ANSI S1.4 or IEC 61672 standard.