# Alan J. Seefeldt — Patents explained on PatentBrief

Alan J. Seefeldt has 3 landmark patents explained in plain English on PatentBrief.

- [How Audio Systems Prioritize Sounds for Better Playback](https://patentbrief.org/patent/us/11765535/methods-and-systems-for-rendering-audio-based-on-priority) — granted 2023
  This patent describes how audio systems can sort sounds into important and less important categories, then use different processing power for each to make complex audio, like movie soundtracks, sound better on various speakers.
- [How a Speaker Bounces Sound Off the Ceiling for Wider Audio](https://patentbrief.org/patent/us/11006212/upward-firing-loudspeaker-having-asymmetric-dispersion-for-reflected-sound-rende) — granted 2021
  This patent describes a speaker system with special upward-firing drivers and slots designed to bounce high-frequency sound off a ceiling, creating a wider, more immersive listening experience.
- [How Speakers Create Overhead Sound from Ceiling Reflections](https://patentbrief.org/patent/us/10595128/passive-and-active-virtual-height-filter-systems-for-upward-firing-drivers) — granted 2020
  This patent describes a system using upward-firing speakers and special sound filters to trick your ears into hearing overhead sounds by reflecting audio off the ceiling.

**Full profile:** https://patentbrief.org/inventor/alan-j-seefeldt

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_Source: PatentBrief — https://patentbrief.org. Plain-English explanations of US patents._