RFQIPX7 Waterproof Structure Mic Design
Many outdoor products need a waterproof function, especially the parts of sound components, such as microphones and speakers, which require a waterproof structure design to ensure that the products will not malfunction after water enters. The general waterproof grade can be divided nine levels; the more common waterproof levels are IPX5, IPX6, and IPX7, of which IPX7 must withstand 30 minutes at 1m underwater of work without damage.
In addition to the waterproof product itself, the housing needs to be waterproof, and the microphone and the mechanism must meet the waterproof specifications. The waterproof microphone usually uses waterproof mesh and adhesive, but the mechanism must also be combined with the microphone appropriately to prevent water from entering. The waterproof mesh is designed in the middle layer of the mechanism (Fig.8.1). After the waterproof mesh is added, the high-frequency response will be attenuated because of the acoustic resistance (Fig.8.2).
