Is a
Patent attributes
Patent Applicant
Patent Jurisdiction
Patent Number
Patent Inventor Names
Karl Stahl0
Date of Patent
April 11, 2023
0Patent Application Number
173013080
Date Filed
March 31, 2021
0Patent Citations
Patent Citations Received
Patent Primary Examiner
A speaker device includes an electroacoustic transducer configured to convert an audio signal into a set of sound waves and a transmitter configured to transmit an electromagnetic signal that carries the audio signal for receipt at distances limited to an audibility range of the set of sound waves. The audibility range of the set of sound waves corresponds to a distance at which the set of sound waves is estimated to be below a predetermined sound level.
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