HIGH FREQUENCY WIRELESS AUDIO LINK
Original Publication Date: 1997-Dec-01
Included in the Prior Art Database: 2002-Jun-17
The use of ultra-sonic transducers in communi- cations has been used before in marine applications as a method of transmission of voice and data via a liquid medium. Over medium distances, it is much more effective than its rf counterpart which is atten- uated greatly beyond a few meters at voice-band carrier frequencies. For land-based applications, transducers, when used, have been superseded by radio frequency and infrared links which accom- plish the same tasks. However, when the complexity of a communication link is a matter of concern, an ultra-sonic transducer is a clean implementation for simple needs.