ROBUST AUDIO WATERMARKING CAPABLE OF SURVIVING PLAY-RECORD PROCESS BASED ON CHROMA FEATURES

This paper proposes an audio watermarking scheme robust to the play-record process therefore allows watermark extraction with a microphone while the music is being played. The key is the synchronization technique that uses the chroma features representing the semantic contents in the audio. Peaks of the processed chroma sequence are used to locate embedding points, and the audio segmented accordingly. Spectral lines in a chosen frequency range are properly altered to carry the data. Experimental results show effectiveness of the method.