SAMURAI Software Options

Multi-Channel Data Acquisition & Analysis

SAMURAI Software Options

SINUS Multi-Channel Data Acquisition Instruments


SAMURAI software by SINUS powers all of the multi-channel data acquisition and analysis instruments manufactured by SINUS Messtechnik GmbH, including Soundbook, Apollo Box or Lite or PCIe Cards, or NoisePAD

SAMURAI Options that have specific application to acoustic and vibration measurements are listed below:

  • Building Acoustics
  • Building Vibration
  • Data Collector
  • Easy Listening
  • Bearing Envelope Demodulation
  • Fractional Octaves
  • HVMA
  • Live Sound Power
  • Monitoring
  • Multi-Generator
  • Noisecam Video
  • Order Tracking
  • Pass-By Noise
  • Post Processing
  • Psychoacoustics
  • Radar
  • Room Acoustics
  • Sound Intensity
  • Soundpower ISO 9614
  • Sound Intensity Map
  • Sound Power ISO 3744/45/46
  • TCP/IP Interface
  • Time Synchronous Averaging
  • Tonality ISO 1996-2
  • Transfer FRF
  • Vibration Meter
  • Virtual Tacho
  • Weather Station
  • Zoom FFT
  • Automation

Each software option is described briefly below:

Vibration Meter

The Vibration Meter option calculates vibrational velocity and displacement values via single and double integration of a signal from an accelerometer. Momentary and peak values are continuously calculated, as are the maximal, peak and effective values from the beginning of the measurement. In addition, high- and low-pass filters are available with selectable cut-off frequencies.

This option satisfies the requirements for a vibration severity meter according to the ISO 2954, ISO 7919 and ISO 10816 standards.

Measurement Range: 
2 Hz to 20 kHz

Software Features:

  • Selectable digital high-pass filter: 2, 5, 10, 20, 55, 100, 200 and 500 Hz
  • Selectable digital low-pass filter: 0.1, 0.2, 0.5, 1, 2, 5, 10 and 20Hz
  • Display in selectable standard units, e.g. m/s2, g, mm/s, µm
  • Numerical display of RMS, PEAK, EQ and MAX for the acceleration, velocity and displacement in the vibration meter window; graphical display in time history graphs
  • Export to Excel, TXT & UFF format files and directly to the NWWin software

Fractional Octaves

The Fractional Octaves option allows the spectral investigation of the activated channels in 1/1, 1/3, 1/6, 1/12, 1/24 and 1/48 octaves, whereby the octave resolution can be selected on a per-channel basis. The central frequency of the highest frequency band corresponds to the audio/FFT bandwidth chosen in the setup. The lowest frequency band is 11 octaves below the highest. The octave spectra stored are calculated with averaging and/or time-weighting (FAST, SLOW, Exp.) from the sequence of “raw” octave spectra. The frequency resolution of octave spectra at low frequencies is inherently high. In order to achieve such high resolution with an FFT, a high number of lines would have to be chosen; however, this might then be at the cost of a lower time resolution.

The spectra can be displayed in spectral (bar/contour/line) graphs, sonograms and waterfall graphs. The time variation of frequency bands can be shown in a time history graph.

Measurement range:
0.01 Hz to 80 kHz, depending on audio/FFT bandwidth


  • Extension of the analysis with digital filters of constant relative bandwidth at resolutions of 1/1, 1/3, 1/6, 1/12, 1/24, 1/48 octaves up to 80 kHz
  • Possibility for simultaneous analysis of 1/3 octaves, 1/n octaves and FFT
  • Simultaneous display of momentary, max, min and L eq-spectra

Order Tracking

The Order Tracking option calculates order spectra based upon FFT analysis of the time signal together with the rotational speed information. The SINUS family of multi-channel data acquisition devices (e.g. the Soundbook) offers two tachometer channels for this purpose.


  • Real-time calculation of the order spectrum
  • 10 to 400 order lines; resolution 1, 1/2, 1/4, 1/8, 1/10
  • Display of order spectra in spectrum graphs as well as in sonograms and waterfall diagrams (against time or rotational speed); progressive display of a selected order (against time or rotational speed) in history graph
  • Use of two tachometer references
  • In parallel the standard analyses in SAMURAI are available (sound level meter, 1/3 octave, FFT, rotational speed)
  • Export to Excel, TXT, UFF and NWWin

Transfer FRF

The Transfer FRF option includes two analysis alternatives: the investigation of two quasi-stationary signals or the analysis of structures via impulse excitation (using accelerometers and an impulse hammer). For impulse excitation, the software supports the organization of the measurement points on a linear or planar grid. The visualization of the oscillation modes is not included in this option; however, the measurement data can be imported into ARTeMIS or ME’scope modal analysis software.


  • Bandwidth, number of lines, windowing and averaging mode selectable
  • Configurable exponential window for force excitation
  • Simultaneous calculation of the transfer values between arbitrarily selectable pairs of channels (e.g. Ch2 versus Ch1, Ch3 versus Ch1, Ch3 versus Ch2)
  • Values calculated: autospectrum reference/response, coherence and Coherent Output Power, transfer functions (H1, H2, 1/H1 and 1/H2), cross-correlation and cross-spectrum, impulse response, autocorrelation reference/response, Cepstrum reference/response
  • Display of complex values as either Amplitude / Phase / Nyquist or Real / Imaginary / Nyquist
  • Operator guidance via an intuitive graphical user interface for the whole measurement process
  • Instructions and overload notification via speech output
  • Export to ARTeMIS, ME’scope via UFF, Excel, NWWin

Time Synchronous Averaging

Refer to SINUS website for further information, or call SAVTek on +61 7 3300 0363, or email

Bearing Envelope Demodulation

Refer to SINUS website for further information, or call SAVTek on +61 7 3300 0363, or email

Building Vibration

The Building Vibration option allows the measurement and analysis of building vibration according to DIN 4150 for the purpose of the evaluation of its effects upon buildings and structures as well as people within them.

Upon the occurrence of vibration, a marker is set in a vibrational velocity / frequency diagram at the position determined by the relevant frequency and the maximum velocity from the three axes.

The guideline values for vibrational velocity in foundations of commercial buildings, housing and protected historical monuments are also shown graphically in the diagram.

Thus, already during the course of the measurement the distribution of the markers shows whether and how often the threshold values for the relevant building type were exceeded.

For evaluating the effects of vibration upon people in buildings, the option provides the takt-maximal value (maximum level in consecutive time intervals) of the frequency-weighted vibration signal, KB(t). The length of the time intervals is freely selectable.

The BUILDING VIBRATION option, in conjunction with the portable and robust Soundbook measurement system and the ICP seismometer developed especially for this application, is a handy and convenient solution for measurement, analysis and evaluation of building vibration.


Refer to SINUS website for further information, or call SAVTek on +61 7 3300 0363, or email

Noisecam Video

Refer to SINUS website for further information, or call SAVTek on +61 7 3300 0363, or email



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