Applications

Sound and vibration measurements

LivePadsiVisionLiveRec24+

Sound and vibration measurements with super compact systems such as LiveRec24+ and LivePad. Never again will you have a wrong range for data acquisition when you use the X-Range technology. This allows the full dynamic range from 3uV to 20V to be recorded without range selection. This small compact device has 6 sensor channels for microphones and vibration sensors, CAN data and additional puls inputs together with a tablet PC for the full power of the si++ software system.

24-channel, high-precision data acquisition

LiveRec24+

LiveRec24+  is the smallest 24-channel high precision data acquisition laboratory for dynamic signals available on the market. It also has the lowest power consumption of all those devices topped with additional pulse channels, CAN Bus and more. These features gently extend the range of possible configurations and applications.

Analysis of tonal components

LiveRec24+

Analysis of tonal components using siVision. Due to the automatic decomposition of tones and noise the components can be rated in the presence of the masking noise inside of the sound. Equal loudness contours in the presence of noise are shown and used to rate each tonal component. This is the only way to determine the perceived loudness of tonal components in sound signals. 

Filtering of the tonal components in noise

siVision

Filtering of tonal components using siVision. Automatic tone decomposition enables tones to be removed or changed independently. This helps to verify their influence aurally. 

Filtering of modulation components

siVision

Modulations in sound signals can be filtered using siVision. The modulation components of stochastic signals are essential for the perception of these kinds of sounds like rattle, squeeze , creak, etc. The sounds are analyzed and can be changed for the first time to validate the analysis easily. 

Rotation-synchronous spectral analysis

si++WorkbenchsiPass-by

Spectral analysis made synchronous with rotational degree of machinery in a yet unknown precision and resolution. These are special tools to analyze the sound and vibration properties in defined angular sections of the rotation. This allows for the separation of different sound sources due to their occurrence during rotation. 

Noise test in production

siTestsiVision

100% test in production for vibration or sound. Elaborated system for the detection of modulations and tonal components even in environments with production noise. Complex criteria are realized in simple forms for the operator. 

Sound source localization

siTracersiCamerasiSourceView

Sound source localization in near field or far field using siTracer, siCamera or siSourceView. The applications range from source localization and analysis with running trains to the search of sound sources on the surface of small devices. The sources are not only located but measured in level and spectra. 

Sound velocity measurement

SoundFlow Sensor

Sound velocity measurements using the sound velocity SoundFlow probe. For direct measurements of sound pressure and sound velocity. 

Online analysis for many channels during aquisition

siRecord

All channels are immediately visible in the online display with time, level, FFT, 3rd octave spectra, ACF and transfer function. The functions can be switched quickly through all channels even with high channel counts.

Sound power measurement using the multi microphone method

siRecordsi++Workbench

Online display for the sound power  level over time even for long time measurements. Fast evaluation of the recordings for level and 3rd octave spectra. 

Pass-by noise measurement system with simple handling and high resolution order analysis

siPass-by

This provides such a high resolution of harmonic analysis that the source of the radiation can be found by using different focus points.

Analysis of modulations

siVision

Computation of the modulation spectra, which are the basis for the perception of roughness and fluctuation strength

Computation of RPM values from sound

siSound2rpmsiVision

The RPM curve is computed from a complex sound signal and can be easiliy edited.

Interactive sound design

siVision

Design sounds with filters with the click of a button.

Decay time measurement using the swept sine method

siBuilding

The method implements a strong noise suppression to allow for high precision measurements even in the presence of  relatively loud environmental noise. 

Impact hammer measurement

siRecordsi++Workbench

Measurement of the vibration modes and transfer functions using the impact hammer with very efficient interactive support for the operator

Building acoustics

siBuilding

The software for building acoustics allows to measure transfer paths in a very simple way. Even multichannel test bench applications are supported very elegantly.

Sound and vibration level measurement

si++Workbench

Level versus time measurements including different frequency weightings and multiple forms of statistics.

Sound power measurement

siIntense

Sound power measurement using the PP or the PU probe. 

3rd octave and FFTspectral analysis

si++Workbench

Adjustable FFT lengths even for extremely high resolution spectra (0.1 Hz and better). The analysis length can be adapted much more precisely as needed than usual. The length can be chosen as a power of two (as usual) or in much finer gradations using a mixed radix FFT.