# William Norman Campbell — Patents explained on PatentBrief

William Norman Campbell has 1 landmark patent explained in plain English on PatentBrief.

- [How to Automatically Generate Musical Harmonies from Audio](https://patentbrief.org/patent/us/8168877/musical-harmony-generation-from-polyphonic-audio-signals) — granted 2012
  This 2012 patent describes a system that listens to music and automatically generates harmony notes to accompany a melody, even detecting and ignoring accidental strums on stringed instruments.

**Full profile:** https://patentbrief.org/inventor/william-norman-campbell

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