Enhanced Sound and Vibration Software

Sept. 30, 2009 – National Instruments (Nasdaq: NATI) has announced the release of the NI Sound and Vibration Measurement Suite 2009, a comprehensive collection of analysis and signal processing tools for noise, vibration and harshness (NVH), machine condition monitoring and audio test applications. The Sound and Vibration Measurement Suite 2009 features a new continuous frequency sweep virtual instrument (VI) that greatly reduces the time it takes for engineers and scientists to perform frequency response tests. The software suite also includes a new AES17-compliant audio filter VI for the National Instruments LabVIEW graphical development environment and the NI Sound and Vibration Assistant that provides the correct frequency filters for testing audio devices that take advantage of digital-to-analogue conversion technology.

The continuous frequency sweep VI can perform frequency response and total harmonic distortion tests in one-tenth of the time traditional swept-sine approaches take. This function makes it possible for engineers and scientists to easily shift between the time and frequency domains, providing the ability to move beyond using fast Fourier transform (FFT) in signal analysis. Along with increasing the speed of test, the continuous frequency sweep makes it possible for new signals, such as a device under test residue signal, to be analysed to characterise the response without stimulus signal interference.