Noise generated by devices represents a huge negative impact on the human body. For the devices we use, we are constantly looking for opportunities to improve or reduce noise intensity. In this diploma there will be a presentation about the possibilities of noise reduction of suction units implemented with laser micro structuring on their surface. A laser system is used to produce various patterns on the surface of the driver. Suction units were measured to noise and air characteristics before and after processing, then I compared the data. Before the comparison, it was necessary to determine the measurement uncertainty of the measurement systems. One unit decreased the noise level by 4%, the unit had square modifications on the exit side of the driver surface.
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