Noise, Vibration & Harshness

Microflown Acouisticam

Microflown AcouisticamThe Microflown in-situ technique to determine impedance, absorption, and reflection makes use of a Microflown particle velocity sensor and a sound pressure microphone. Both sensors are mounted in the PU-mini probe that is positioned close to the material with a sound source positioned at a certain distance. The sound pressure and acoustic particle velocity are measured right at the surface of the material. The impedance can be derived from the ratio of sound pressure and particle velocity. From this, the material reflection and absorption can be calculated. The probe is able to measure in the whole audible range but the lower frequency limit of the method at this moment is 300Hz. This is due to the low sound pressure emission from the loudspeaker at low frequencies (and the limited dimensions of the sample). The current usable bandwidth for the method is 300Hz - 10kHz. The method makes it possible to measure under different angles, measuring with a high spatial resolution of just few millimeters, measure all type of materials and material sizes. There is also no need to take destructive samples and measurement can be performed when the materials are installed.

Microflown Surface Impedance Meter

Microflown Surface Impedance MeterThis 12 PU mini array is used for the standard Microflown hand held acoustic camera. With the acoustic camera you can make acoustic pictures. Real time visualizations can be made of Impedance, Sound Pressure, Particle Velocity and Sound Intensity. This can be very useful for example sound localization / mapping or end of line control of products. The handheld version is developed to provide a portable solution, so easy and quick scanning of surfaces is possible.


Sound Level Meter

Sound Level MeterThe popular Larson Davis 831 sound level meter provides test engineers with a unique combination of time, event, and spectral history data capturing capabilities. Model 831 includes extensive memory, on-board sound recording, 1/1 and 1/3 octave spectra, ANY LEVEL™ multi parameter measurements, and innovative advanced noise event detection and analysis. A built in USB port communicates data efficiently to any PC.


Sound Book

Sound Book This universal portable measuring system for acoustic, vibration and engineering measurements in general, is now available in its 2nd generation based on the innovative Apollo™ platform. The powerful 24-bit A/D converters in combination with the innovative Apollo filter processors provide many channels with high precision and bandwidth. Soundbook_MK2 also uses the robust Panasonic Tough book CF-19 as its basis. The Soundbook allows to work practically everywhere - in the office as well as outdoors. Neither heat, cold, rain, dust nor heavy mechanical shocks have an impact on the device. Having a weight of only 3 kilograms, a robust magnesium alloy exterior, a convertible bright TFT display, moderate power consumption and many interfaces, the Soundbook unites the performance of a high-quality measuring device with the possibilities of a PC. The Soundbook is particularly suitable for:

  • Environmental protection
  • Engineering services
  • Quality assurance
  • Research and development

SAMURAI is the universal software package for noise and vibration measurements as well as real-time analysis with our Soundbook system. Soundbook™ is portable measuring system for acoustic, vibration and engineering measurements.

M-multi channel
R-Real Time
SAMURAI contains 2-, 4- or 8-channel sound level meters conforming to the IEC60651 / IEC 60804 / IEC 61672-1, IEC 651 and IEC 804 standards It contains the following innovative functions: • Integration of a transducer database for common transducer types (microphones, accelerometers, voltmeters, tachometers, thermometers and hygrometers, as well as sensors for velocity, displacement, force, torque and pressure)

  • Multi-analysis function including signal recording, octave analyzer (1/1, 1/3), FFT analyzer, sound level meter, tachometer, auxiliary channels
  • Graph types for display of measurement data: sound level meter (numeric), level history, spectrum, sonogram, waterfall diagram, time signal, vsXref (level versus RPM), tachometer and further windows (see also Options)
  • Convenient calibration check
  • Display of 1/3-octave and FFT spectra in the same window
  • Display of the measurement data versus time or versus RPM
  • Import and export of weighting curves
  • Curve editor for reference spectra and weighting curves
  • Sensor error detection (detects cable breaks for ICP sensors)
  • Level indicator

Sound BookThe SINUS Triaxial Hand Accelerometer is especially conceived for the measurement of Hand/Arm vibration, in particular according to ISO 8041 (with SAMURAI software option: HVMA). Its innovative features include:

  • Comfortable in use, minimizes disturbance of the work process
  • Direct leading-in to the palm of the hand
  • Wide dynamic range




Sound BookTri- axial accelerometer for whole body vibration