Abstract
The technology of embedding image into the audio signal was researched and an adaptive algorithm of additive audio watermarking based on wavelet packet is proposed. The visually recognizable binary watermark image could be embedded in the original signal wavelet packet domain in this algorithm. The intensity of embedded watermarks on the different audio segments would be modified by adaptively modulating the scaling parameter. The experimental result demonstrate that the watermark is imperceptible and the algorithm is robust to many operations to digital audio signal, such as resampling, cropping, low pass filter, high pass filter, MP3 compression and so on. The algorithm is better than which without using SNR, also better than using discrete wavelet transform (DWT) method which can't resist the high pass filter attack.
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