On Watermarking Technology for Audio Copyright

This paper shows the watermarking system that inserts copyright holder's logo in music file. In other words, a sound file is able to have an image information like a logo or letters. The watermarking system converts a sound file into an image file using spectrogram. In the spectrogram domain, a logo is inserted using spread spectrum. The propposed technique shows that the verification of copyright is better than the method using PN-Sequence. Therefore, the result of the paper is will be very useful for the protection the original outcome from illegal copy or transferring.