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Acoustic Camera - 3D microphone array

3D Array for beamforming measurement of a drill with 3d beamforming antenna

The 3D microphone array is used for spatial 3D Beamforming. The object is located in the array for the 3D Beamforming process. With only one measurement the acoustic behaviour of the 3 dimensional object can be displayed.

Depending on the application it can be used between 40 up to 560 microphones. Even the array size can be chosen between 80 cm x 80 cm x 80 cm up to the integration of the micrphones in a whole room.

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size of the acoustic camera from 400 mm up to 5000 mm or even complete rooms e.g. anechoic chamber
Spezifikationen der akustischen Kamera <33 dB to 120 dB with up to 40 dB dynamic
number of microphones of the acoustic camera 40 - 560 MEMS-microphones, 24 bit resolution,
Samplerate 48 kHz, frequencyrange 10 Hz - 24 kHz
recommend frequency range of the acoustic camera from 50 Hz with beamforming-methods; below with decreased resolution
material of the acoustic camera Aluminium
weight of the acoustic camera

The data acquistion system is a National Instruments embedded-controller with real-time operating system and FPGA.

Number of channels 40
Samplerate per channel 48 kS/s
Resolution 24 bit
Synchronous sampling Yes
Interface to PC Ethernet
Fanless Yes
Additional inputs Trigger, Tacho (RPM)
Powersupply 12 V
Consumption < 7 W
Dimension 23 cm x 18,5 cm x 5,8 cm
Weight 2 kg

The Noise Inspector software is the standard solution for visualizing sound sources. The application-oriented software guides you from data acquistion to analysis to saving and reporting of acoustic data.

  • Online- and offline analysis
  • Acoustic-photo und acoustic-video
  • A lot of HD algorithms: Beamforming, EVOB, CLEAN SC, MUSIC, Capon, DAMAS, Real 3D Beamforming,...
  • Frequency analysis and time-frequency analysis (sonogram)
  • Acoustic weighting (A, B, C) or linear presentation
  • Open interface to Matlab for own algorithms
  • Easy export of terce/octave, measurement, acoustic-photo and acoustic-video
  • Playback of local sound
The following Accessories are available for this system:

Zubehör Akustische Kamera Kalibratoradapter
Calibrator adapter
Zubehör Akustische Kamera Akku
Zubehör Akustische Kamera Kalibrator
Zubehör Akustische Kamera Pelicase
Zubehör Akustische Kamera Windschützer

The Breakout Box extends the data acquisition system for connecting ICP/IEPE and analoge sensors the Frontend.

Number of channels 8 to 40
Sensor interface ICP, IEPE and analog sensors single switchable
Input voltage ± 5 V
Samplerate per channel 48 kS/s
Resolution 24 bit
Synchronous sampling Yes
Interface Connection to I²S Frontend
Fanless Yes
Powersupply 12 V
Consumption < 1 W
Dimension 14 cm x 7,5 cm x 5 cm
Weight 0,5 kg
3D beamforming results of a screwdriver acoustic camera
Acoustic result (3D-Beamforming)
Beamforming results of a screwdriver acoustic camera 2
Acoustic result (3D-Beamforming)