Tuesday - November 4, 2025

Method and Device for Spectral Expansion for an Audio Signal

2025-09-23

ALEXANDRIA, Virginia, Sept. 23 -- ST R&DTECH, LLC, Delray Beach, Florida has been assigned a patent (No. US 12424235 B2, initially filed July 6, 2023) developed by John Usher, Beer, United Kingdom, and Dan Ellis, New York, New York, for "Method and device for spectral expansion for an audio signal." . . .

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Method and Device for Spectral Expansion for an Audio Signal

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