MAE - McIntosh Applied Engineering, LLC



MAE110 Wind Generator

The MAE110 is a portable wind generation box primarily designed for microphone wind noise testing.
It measures 18 inches long by 12 inches wide and 9 inches tall. It generates a very fast air flow that
can be continuously varied from 5 to 35 MPH. The wind exits from a 2.5 inch by 2.5 inch rectangular port
and forms a "jet" that stays together up to a foot from the exit.

One of the keys to wind noise testing is having a wind source that does not produce an acoustic noise
that competes with the wind noise seen by the microphone. To accomplish this, it is critical for the
wind noise flow to be as quite as possible. Home fans have strong tonal noise components associated
with the blade-pass frequency and are not suitable for wind noise testing.

The MAE110 uses a low noise blower combined with an optimized integrated silencer and full vibration
control treatment on the interior to generate a high wind speed with as little acoustic noise as
possible in a device of this size. The acoustic noise is less than 50 dBA for wind speeds up to 20 MPH.
At higher wind speeds, the noise level increases slightly, but it is still likely to be much less than
the turbulent noise seen by the microphone.


    

Dimensions: 18 inches long, 12 inches wide and 9 inches tall.
Power: 110V 60/50Hz AC. @ <1 Amp or 200 Watts
Speed set by a continuously variable analog rotary controller.

Other custom sizes and computer controlled fan speed are possible upon request.


Noise measured 3 inches above the 2.5x2.5 inch exit port.

MPHSPL dBASPL dBC
5<50<50
10<50<50
13<50<50
15<5057
205164
255568
305869
356174


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