The research of echo hiding technology based on audio signals

摘要

Information hiding technology is very important for version protection and confidential communication.Echo hiding is one of the technologies of the information hiding.In the paper,firstly,echo hiding technology is presented with description of information embedding and extracting process.And then,the text information is embedded into audio by MATLAB simulation.The capacities of the information are 8,30 and 100 bits respectively.After then,the analysis is made for embedding 100 bit information.The experiments express that when the attenuation coefficient is selected to 0.7 or 0.8,the information recovery rate is more satisfied around 82%.Finally,the rationality of echo hiding delay parameter is analyzed.