Invisible Watermarking Audio Digital with Discrete Cosine Transform

Security is one of the most important parts now, related to copyright which has a royalty to the content owner, this content are an audio file, invisible watermarking is one of the types of techniques that can be used to solve this case because this technique makes watermarking invisible by the human eye and the methods used for this technique using DCT (Discrete Cosine Transform) which works on the frequency domain digital audio file