Wouldn't the music only be on the audible spectrum? Sonar works (can work?) on t... | Hacker News

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hardwaresofton on March 18, 2016 | parent | context | favorite | on: FingerIO: Using Active Sonar for Fine-Grained Fing...

Wouldn't the music only be on the audible spectrum? Sonar works (can work?) on the inaudible spectrum.

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