Apple Patents Water-Resistant Speaker Port and Bone Conduction Earbuds

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Apple was granted patents today that include a concept for water-resistant iPhone speakers and a bone conduction technology that could bring advanced noise cancellation to future earbuds (via AppleInsider).

The first application granted by the U.S. Patent and Trademark Office is titled "Liquid resistant acoustic device" and details a protected acoustic port that uses a special mesh "umbrella" inserted between apertures in a device's housing, similar to the design of the mesh-covered loudspeaker found in current iPhones.

Speaker water resistant patent
If liquid enters through the housing apertures it immediately comes into contact with the umbrella and is directed away from the internals, although in some versions a small amount of liquid is allowed to pass through if the handset is under significant pressure, to avoid structural damage.

Apple's invention also includes a second line of liquid defense, in the form of a "hydrophobic" coating applied to the outer surface of the iPhone housing and mesh umbrella, while a "hydrophilic" coating applied to the inside of the mesh works to draw liquid out.

Bone conduction acoustic patent
As with all patents, whether or not Apple decides to use the invention in any future product remains unclear, although AppleInsider notes that a similar port design can already be found on the current Apple Watch.

Several rumors claim that the upcoming iPhone 7 could be properly waterproof, but it's not obvious that the invention described above would meet the requirements of such a specification.

Bone conduction patent
Another Apple patent was awarded today, called "System and method of mixing accelerometer and microphone signals to improve voice quality in a mobile device". This one describes a headset that uses bone conduction technology to effectively filter out ambient noise.

The invention works by using accelerometers that detect vocal chord vibrations which reverberate through the user's skull. Coupled with an onboard microphone, the system is able to measure output signals and effectively parse out ambient noise vibrations.

Output from both systems are processed through a noise cancellation unit which then outputs a clean signal for transmission.

Tag: patent

Top Rated Comments

2010mini Avatar
60 months ago

Long overdue for water resistance.

The current ones are. What you are looking for is Apple to officially say it is.

iPhones are built a lot tougher than you think.
Score: 2 Votes (Like | Disagree)
Zimmie Avatar
60 months ago

Didn't Jawbone do this already? Unless Apple's way of doing the same thing is completely novel, more evidence that the patent system is indeed broken.

Jawbone's system was a little more like an audio processing tool called a noise gate. From what I've seen, they use a conventional microphone to actually pick up the audio. They then use the little nub that contacts your face to adjust how much of the microphone's audio to pass as input. When you're not talking, the nub on your face picks up no vibrations, so it doesn't let any sound from the microphone through. When you talk quietly, it passes a little sound.

Actual bone conduction microphones have historically not been very good. That's why the military and various high-noise professions use throat mics, even though they aren't terribly comfortable.
Score: 1 Votes (Like | Disagree)
happydude Avatar
60 months ago
Long overdue for water resistance.
Score: 1 Votes (Like | Disagree)

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