• Waterfalls
• Order Tracking
• Sound Quality Metrics
• RapidResults Technology
• Tacho Analysis
• Waterfall Averaging
• A, B, C, D Weighting
• 1/nth Octave Bands

DATS NVH Analysis Software includes RapidResults NVH

NVH analysis (Noise, Vibration & Harshness) is central to creating a successful product. It’s not just making less noise, but also making the “right” noise, that is important.

Using the depth and power of the DATS NVH Analysis Software, it is possible to measure and refine products from automobiles & aircraft to white goods and other household appliances.

DATS NVH now include RapidResults NVH. This innovative new software ensures that the results of your NVH tests are available immediately. Perform your test, view your results, prijnt your report. It's as simple as that.

Extensive tacho analysis is used to analyze angular speed. Waterfall and order analysis picks out those parts of the spectrum that are harmonically related. Waterfall averaging enables the engineer to get a more consistent view of the problem. 1/nth Octave Analysis is used extensively as a first level method of reducing the data into standardized bands, which reflect the human response to noise. There are also a large number of Sound Quality metrics, that can be used to quantify noises in ways that reflect more accurately the psychoacoustic response of the drivers and passengers.

The DATS NVH Analysis Software contains everything an engineer needs for successful NVH analysis.

Software includes...

Waterfall Analysis

Speed signal from tacho
Waterfall from tacho signal with phase
Waterfall from speed signal
Order Extraction
Frequency to order spectrum conversion
Order cuts from waterfall

Averaging, Weighting & Octaves

A, B, C, D spectral & time domain weighting
Spectrum averaging
Spectrum average & RMS in user-defined bandwidth
Waterfall averaging
1/nth octave band analysis

Sound Quality Metrics

AI Versus Time
Loudness by Zwicker Diffuse (ISO532B)
Loudness by Zwicker Free (ISO532B)
Loudness by Zwicker Diffuse (Vehicle Biased)
Loudness by Zwicker Free (Vehicle Biased)
Loudness by Stevens (ISO532A)
Loudness Versus Time
Speech Articulation Index (ANSI S3.5 1969)
Speech Articulation Index (Vehicle Biased)
Composite Rating Performance Value
High Frequency Factor
Preferred Speech Interference Level
Spectral Balance

Misc

Nth Octave from Time
Difference dB Signals (in averaging weighting and octaves)
N10S10 calculation
Equalisation Order Filter