Microphone Arrays Gfai Tech Sphere48 AC Pro

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 fiber. This ensures easy handling and accurate microphone and array positioning even under real test drive conditions on the road. This array connects to the data recorder.

Depending on a signal’s spectral composition, the recommended measurement distance varies between 0.3 and 5 meters. Longer ranges are possible for measurements in considerably higher frequency ranges. The wiring of the microphones is enclosed in and protected by the array body which guarantees the best possible acoustic transparency to measure accurate sound levels.

The array design is optimized to provide the highest spatial resolution as well as map dynamic possible, given the number of microphones used. Additionally, the array design effectively minimizes partial reflections, sound pressure doubling effects on the surface, and resonance effects between the measured object and the array. Furthermore, the sphere geometry minimizes aliasing effects.

As this microphone array acts omnidirectional, the beamforming results are normally mapped on a scanned 3D point cloud or 3D CAD model of the measurement object/environment, to be imported in the NoiseImage software. The built-in studio microphones have an extremely linear frequency response. All are carefully hand-selected and calibrated to ensure stable sound pressure levels (+/- 0.5 dB). To allow long distances, the array is connected to the data recorder via two differential SymBus microphone connector cables (max. 20 m).

The array comes with an integrated fixed focus USB camera. The included high-end Manfrotto tripod allows a set up in almost any measurement environment imaginable. Array and tripod are supplied in a transport case and bag respectively.