Title :
Hiding-type speech communication using ultrasonic carrier technology
Author :
Li-Hong Juang ; Ming-Ni Wu
Author_Institution :
Dept. of Civil Eng., Shantou Univ., Shantou, China
Abstract :
A speech transmission method is presented to transmit an audible sound wave by an ultrasonic carrier frequency modulation with a characteristic of directional propagation. The modulated sound wave is propagated with the ultrasonic carrier to the appointed position, and then the original speech will be produced after getting rid of the ultrasonic carrier, thereby achieving the objective of speech transmission in a selected orientation due to ultrasonic high directionality meanwhile it can hide the communication voice data during its transmission.
Keywords :
acoustic waves; frequency modulation; radiowave propagation; ultrasonic applications; voice communication; appointed position; audible sound wave; communication voice data; directional propagation; hiding-type speech communication; modulated sound wave; speech transmission; ultrasonic carrier frequency modulation; ultrasonic carrier technology; Acoustics; Frequency modulation; Hardware; Receivers; Resonant frequency; Speech; High directionality; Speech transmission; Ultrasonic carrier frequency modulation;
Conference_Titel :
Awareness Science and Technology and Ubi-Media Computing (iCAST-UMEDIA), 2013 International Joint Conference on
Conference_Location :
Aizu-Wakamatsu
DOI :
10.1109/ICAwST.2013.6765481
