Encoding a Hidden Digital Signature onto an Audio Signal Using Psychoacoustic Masking

摘要: We report on the development of a system for use in an interactive television application. A method encoding hidden digital signature onto audio component signal is presented. This about 35 bits length and encoded utilizing psychoacoustic principles such that it nearly inaudible to human observers yet detectable by inexpensive hand-held decoder. The scheme robust against most extraneous room noise as well wow flutter video tape machines.