A multicarrier modulation audio watermarking system

Information hiding of data in an audio file is an important thing that the media can be recognized by its ownership. The hidden information would be the important information which describes the copyright of the audio file. In this research, the binary data is inserted or hidden into the audio file by multicarrier modulation technique data hiding. The encoded binary data by convolutional encoding is modulated by multicarrier frequencies before embedding into the host audio. For detecting the error data extraction, CRC bits are inserted into the encoded data. Data hiding capacity with this technique can achieve up to 40 bits per second in file mode with good audio imperceptibility and 100% detection rate without any attack.