ViAcoustics

With the Sound and Vibration Toolset from National Instruments and the LabView programming language, users are ready to start programming their own acoustical measurement solutions. Many of the National Instruments and Nelson Acoustical Engineering software applications provided by ViAcoustics are built around these Sound and Vibration Toolset VI's.

This powerful set of acoustical signal processing VI's make it easy to build an acoustical measurements to your specific needs.

National Instruments Sound and Vibration Toolset
Sound and Vibration Toolset for LabView	Pre-programmed Virtual Instruments (Vi's) for performing common signal processing calculations for sound and vibration analysis.
Fractional Octave Filters
	1/1, 1/3, 1/12 and 1/24 octave band filter Vi's VI's for Linear Peak and Equal Confidence Averaging Utilities for Octave Band Measurements
Sound Level Measurement
	Vi's for Exponential averaging include Slow, Fast, Impulse and Custom Time constant. Leq or Peak Measurement Vi's
Engineering Units / Calibration
	Vi's for scaling measurements in engineering units Vi's for establishing measurement calibration
Weighting Filters
	A, B, C Weighting
Transient Analysis
	Vi's for converting tachomter signals for RPM Vi's for Short Time FFT and Short Time FFT vs Time
About Host Based Filtering vs Real Time Filtering : The National Instruments Sound and Vibration Toolset Vi's utilize host based filters. That is, the signal processing associated with the filtering is conducted on the host PC. Therefore, the time required to conduct the filtering operation relative to the input signal is based on the speed of the host PC and the other tasks currently being processed. For newer PC's with fast processors and very little other simultaneous task management, this filtering process can be close enough to real time to serve many needs. For true Real Time Filtering, National Instruments offers the PCI-445x series of data acquisition cards with on-board DSP (Digital Signal Processing) and the NI-DSA w/Octave driver. Using a dedicated on-board processor for the proportional octave band filtering insures real time performance of your system.