Speech Information Hiding Technology

As an important part of information security,speech information hiding has a wide range of applications which include banking or credit card transactions by telephone,information and reservation services, access control in high security areas and forensic investigations.Though speech information hiding perform well when clean speech is used in no noise conditions,the performance degrades rapidly when it used in real-world conditions.The focus of this research effort is to develop techniques for data embedding,data encoding,data obtain and some research results were obtained.A history review of speech information hiding theory is introduced in this paper at first.Based on the result come from the research with the speech information hiding,hotspot and nodes of the research are list.A modify method for Discrete Fractional cosine Transform are proposed and the two method is introduced in speech information hiding. The low bit embedding based on modified three cycles Discrete Fractional cosine Transform(MFDCT3) and zero pass way based on the Transform are proposed and perform the better result.The method combined his theory of frequency hopping code and ear shelter characteristic is proposed and shows better performance.