/Patent Tracker
ApplePatent applicationAudio & voiceInterest 5/10

Apple patents speaker valve that adjusts to sound volume

Apple describes an electronic device with a speaker setup that includes a specific air path behind the speaker driver. A valve in this path automatically opens or closes based on how loud the speaker is, changing the physical size of the air chamber to tune the sound.

Why it mattersThis could help Apple devices maintain consistent sound quality or prevent distortion when the volume is turned up high.

In the filing’s own words

An electronic device comprising: an enclosure having an enclosure wall that forms a back volume chamber around a transducer and an acoustic tube coupling the back volume chamber to an environment surrounding the enclosure wall; and a valve coupled to the acoustic tube and operable to automatically tune the acoustic tube in response to a sound pressure level of the transducer.

What exactly they claim (claim 1)

1. An electronic device comprising: an enclosure having an enclosure wall that forms a back volume chamber around a transducer and an acoustic tube coupling the back volume chamber to an environment surrounding the enclosure wall; and a valve coupled to the acoustic tube and operable to automatically tune the acoustic tube in response to a sound pressure level of the transducer.

Facts

Company
Apple (Apple Inc.)
Official title
Valved Port
Publication number
US20260292394A1
Application number
19083043
Filed
Mar 18, 2025
Published
Sep 24, 2026
Inventors
3
Claims
20

Classified under

H04R 1/2849 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

More from Apple in Audio & voice

Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.