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BS 5944-6:1992
Measurement of airborne noise from hydraulic fluid power systems and components. Method of test for pumps using a parallelepiped microphone array (British Standard)
This part closely follows the methods described in the two other parts, but allows the use of alternative pump mounting and drive configurations which are simpler and cheaper to implement in an anechoic chamber. May also be applied to test motors.
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British Standards Institution [bsi]