AN APPARATUS AND METHOD FOR INSERTING/EXTRACTING CAPTURING-RESISTANT AUDIO WATERMARK BASED ON DISCRETE WAVELET TRANSFORM, AUDIO RIGHTS PROTECTION SYSTEM USING IT

摘要

The present invention relates to a wavelet-based audio watermark insertion , and extraction apparatus and method applying this copyright management system, that converts the audio signal to a discrete wavelet watermark embedding device and the watermark for the change based on the watermark to be inserted , including the sync signal while controlling an average insert the insertion strength of the watermark in the audio signal of the wavelet coefficient inserted audio using the watermark extraction device for decoding the watermark information inserted to extract based on the average of the wavelet coefficient by the wavelet transformation even when an audio signal is to find a synchronization point of the signal that is captured when the audio signal is captured also can protect the copyright .