Adaptive Audio Watermarking Algorithm Based on Wavelet Transform

摘要

Aiming at the problem of small capacity and poor robustness of audio watermarking information,an adaptive digital audio blind watermarking algorithm based on wavelet transform is proposed.In this algorithm,each frame of the audio signal is converted into a discrete transform by using Haar wavelet,and the fine and approximate components are obtained,and the component masking threshold is calculated.Finally,the watermark embedding position is selected by the adaptive algorithm,quantized and modulated in the audio.The intermediate and low frequency coefficients of the signal.The simulation results show that the proposed algorithm has some resistance to common signal processing attacks and is robust to resampling and low-pass filtering attacks.