AcSoft
Svantek UK

Arrays for 3D measurements

The 3D measurement arrays from gfai tech are for use with their full Acoustic Camera System.

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For 3D measurements, the microphone array receives signals from all directions. Therefore, these arrays are specially optimiSed for interior measurements. The beamforming results are mapped on scanned 3D point clouds or 3D CAD models of the measured object. Sphere Arrays with 48 or 120 microphone channels are suitable for different scenarios.

Sphere48 AC Pro

48 channel system for various interior measurement scenarios
This spherical 48 channel microphone array is primarily designed for applications in enclosed spaces. The lightweight array-body is designed as slim as possible and is made of carbon fibre. This ensures easy handling and accurate microphone and array positioning even under real test drive conditions on the road.

Sphere120 AC Pro

120 channel system for various interior measurement scenarios
This spherical 120 channel microphone array is primarily designed for applications in enclosed spaces. The omnidirectional characteristics of the array make it perfect for 3D applications, for example in room acoustics. In combination with our cutting-edge Software NoiseImage, we offer unique 3D functionality.

Sphere48 AC Pro

Array-body diameter 35 cm
Weight
0.9 kg
Video camera Intel® RealSense™ Depth Camera D435
Resolution 1920 x 1080 (Full HD)
Microphones Electret condenser capsule
+ special designed preamplifier
Frequency response 100 Hz – 15 kHz ( < 0.5 dB)
20 Hz – 20 kHz (< 3 dB)
Max. sound pressure level 130 dB at 3% THD
Noise level 27 dB(A)
Sensitivity 20 mV/Pa
Channels 48
Recommended measurement distance > 0.3 m
Acoustic maps from … 12 dB – 130 dB
Backward attenuation > -15 dB
Recommended mapping frequencies 291 Hz – 20 kHz
Dynamic range
(Distance to the source: 1 m;
calculation points: 90,000)
9 dB – 14 dB, up to 50 dB with
Advanced Algorithms
Ingress protection code IP20
Cable length to a data recorder Up to 20 m (on request: 50 m)
Operating environment 0°C – 35°C, up to 80% RH

Sphere120 AC Pro

Array-body diameter 60 cm
Weight 2.1 kg
Video Camera

Intel® RealSense™ Depth Camera D435

Resolution 1920 x 1080 (Full HD)
Microphones Electret condenser capsule
+ special designed preamplifier
Frequency response 100 Hz – 15 kHz ( < 0.5 dB)
20 Hz – 20 kHz (< 3 dB)
Max. sound pressure level 130 dB at 3% THD
Noise level 27 dB(A)
Sensitivity 20 mV/Pa
Channels 120
Recommended measurement distance > 0.5 m
Acoustic maps from … 8 dB – 130 dB
Backward attenuation > -21 dB
Recommended mapping frequencies 187 Hz – 10 kHz
Dynamic range
(Distance to the source: 1 m;
calculation points: 90,000)
15 dB – 18 dB, up to 50 dB with
Advanced Algorithms
Ingress protection code IP20
Cable length to a data recorder Up to 20 m (on request: 50 m)
Operating environment 0°C – 35°C, up to 80% RH

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