Svantek UK


The SonoCat is a multi-functional spherical microphone array. It consists of eight digital MEMS microphones located in a rigid sphere. 


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The SonoCat is used to collect all the acoustic data required for the calculation of the sound pressure level, the 3D sound intensity vector, and the sound absorption coefficient. The SonoCat is calibrated at a high standard and can be used to perform both point and scan measurements. For example, a point measurement can be used to measure the sound pressure or the 3D intensity vector to locate where a sound source is emitting. A scan measurement can provide the sound power of a machine or the average sound absorption of a surface.

The SonoCat is connected to a PC or a tablet with the SonoCat software where it can be used for monitoring, acquisition and analysis of the recorded sound field.

Sound Pressure Level Measurements

The Sonocat is a multi-purpose spherical microphone system that can measure sound pressure levels (SPL) in stationary sound fields.
Three common types of frequency weighting are provided to adjust the level according to the situation:

  • A-weighting: Frequency weighting based on the relative loudness perceived by the human ear at a sound loudness level of 40 phon.
  • C-weighting: Frequency weighting that is more appropriate for higher loudness levels.
  • Z-weighting: Frequency weighting at an equal level (0 dB) for all frequency bands (i.e. no frequency weighting).

The overall Sound Pressure Level is computed according to the IEC-61672-1 standard.

• Sampling rate: 48 kHz
• Operating frequency range: 50 Hz – 8000 Hz
• Dynamic range: 29 – 116 dB (A)
• Operating system requirements: Windows
• Hardware requirements: Dual core processor,
>2 GHz 4 GB RAM

SonoCat Software

The SonoCat is user-friendly. It can be connected to any computer via USB where the software suite performs the measurements. A monitoring window displays the measured parameters in the frequency domain in real-time and precise measurements can be done with full control over the number of averages, FFT window, and overlap percentage. The recorded data is stored in a lossless compressed form and can be analysed on the fly. The analysed results are plotted in a GUI and can be exported as an image or text file.


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