Diffuse Field Testing
— Definition
— What Tests Can Mecanum Offer You?
Sound Power Measurement
— Definition
— How Can Mecanum Quantify the Sound Power of Your Products?
Modal Analysis
— What Can Mecanum Offer You?
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Diffuse Field Testing
Definition
A diffuse sound field is defined as a sound field with uniform energy density and random direction of propagation.
What Tests Can Mecanum Offer You?
Laboratory tests can be performed by a Mecanum acoustician in the Mecanum’s Acoustic Test Cabin (MATC) or in large reverberant room and Sound Transmission laboratory at Université de Sherbrooke.
Sound Power Measurement
Definition
The sound pressure measured at a distance of an equipment is not always relevant in order to quantify how much noise this equipment makes. This sound pressure depends both on the intrinsic noise emitted by the product – its sound power – and the environment, like the distance or location with possible reflection on walls, soils or any other parameter which may impact the sound level.
How Can Mecanum Quantify the Sound Power of Your Products?
Mecanum offers several methods based on ISO standard to quantify the sound power of your products:
- Sound pressure method in reverberation room (ISO 3741),
- Sound pressure method in hemi-anechoic room (ISO 3744),
- Sound pressure method in anechoic room (ISO 3745),
- Reference source method (ISO 3747),
- Sound intensity method (ISO 9614-3).
Modal Analysis
What Can Mecanum Offer You?
- Impact hammer or shaker excitation,
- FRF measurement A/F, V/F or D/F,
- Response measured with accelerometers or 3D scanning vibrometer,
- Modal parameters: eigen frequencies, structural damping, and mode shape.
