RFQ-
IPX7 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.
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Innovations
A compact and as thin as possible form factor is the mainstream of designing current laptops. That causes traditional round-shape speakers, which are limited by the diameter (i.e., length and width), not to be satisfied with state-of-the-art laptops. So, almost all loudspeaker designs for laptops have rectangular shapes to enlarge the vibrating area under a compact and limited space, and the longer, narrower, and thinner dimensions are the direction for future developments.