Microphone Array Evo AC Pro


Mobile array for wind tunnel applications

As required, the Evo AC Pro is comprised of 96 to 168 microphone channels and provides highest definition and acoustic dynamic for wind tunnel applications. It was especially developed for identifying aerodynamically created sounds. This microphone array offers cutting-edge technology in the field of aeroacoustics.

Our offered allround service for wind tunnel measurements includes the related software module providing several functions in NoiseImage.



As this microphone array is especially tailored to wind tunnel applications, it meets the highest standards in image dynamics and sharpness of resolution. The Evo AC Pro was designed with a low HF aliasing and high LF contrast, combined with an enhanced spatial resolution.

The foldable sandwich construction allows easy transportation and measurement setup. A convenient setup frame with wheels for flexible positioning of the array and data recorder is included in the delivery. Additionally, the anchoring of the device in the ground is possible for the measurement setup in wind tunnels.

According to the customers’ needs, the array is equipped with state-of-the-art microphones. The individual array design is optimized to achieve best results for the spatial resolution and acoustic dynamic.

The mcdRec data recorder is available for performing data acquisition. To complete the system, NoiseImage offers the suitable software module for wind tunnel measurement and provides various advanced analysis methods.

Technical Data

Array body dimensions 2.4 x 2.5 m
(2.4 x 1.9 m for transport)
Weight 70 – 90 kg (depending on the configuration)
Video camera Baumer VCXG-25C
Resolution 1920 x 1080 (Full HD)
Microphones Electret condenser capsule
+ special designed preamplifier
Frequency response 20 kHz – 60 kHz (< 15 dB)
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 96/120/144/168
Recommended measurement distance Depending on the configuration
Acoustic maps from … 96 channels: 8 dB – 130 dB
120 channels: 7 dB – 130 dB
144 channels: 6 dB – 130 dB
168 channels: 6 dB – 130 dB
Recommended mapping frequencies 84 Hz – 10 kHz for 144 channels
Dynamic range
(Distance to the source: 3 m;
calculation points: 90.000)
16 dB – 24 dB, up to 50 dB with
advanced algorithms
Ingress protection code IP20
Cable length to data recorder up to 20 m (on request: 50 m)
Operating environment 0 °C to 45 °C, up to 80 % RH


Acoustic Camera Evo

Acoustic Camera Overview. The Original.

Acoustic Camera. Listening With Your Eyes.

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