نشانه گذاري بلا درنگ فايل هاي صوتي MP3

Real-time Watermarking MP3-Compressed Audio

Encryption or scrambling of audio data is not enough for controlling access to them, and Watermarking methods should be used for prevention of their unauthorized distribution and thereby preserving rights of their creators. These methods enable controlling copy of audio files and also tracing copied files by hiding Copyright information in audio file. Watermarking MP3-compressed files in Web requires a special kind of watermarking that inserts copyright data directly into bit-stream of MP3 audio. In this paper, a novel technique proposed for watermarking MP3-comprcsscd audio data. Direct extraction of watermark data from compressed file and also non-susceptibility to asynchronous MP3 frames in Watermark Embedder and Extractor, are among the significant features of the proposed system in comparison to similar methods.