A method of covertly transmitting information, a method of recapturing covertly transmitted information, a sonar transmitting unit, a sonar receiving unit and a computer program product for covertly transmitting information and a computer program product for recapturing covertly transmitted information

摘要

The invention relates to a method of covertly transmitting information. The method comprises the step of providing biological sound data. Further, the method comprises the step of processing the biological sound data with the information to be transmitted in a correlated manner. The method also comprises the step of generating an acoustic signal from the processed biological sound data.