关键词: 音频水印, 掩蔽模型, 量化, 鲁棒性

Abstract: Watermarking embedding algorithm based on auditory masking is proposed in this paper，which embeds watermarking based on masking threshold in low-band coefficients of DCT transformation.Calculating masking threshold of every critical band by auditory masking model，then quantization steps are controlled by masking threshold and value of audio carrier of the embedding points.At the same time，for meeting the require of fast embedding，we can find the best balance between time of embedding and robustness by algorithm proposed in this paper，and get the best repeating times of embedding watermark in one frame.Results of the experiment show that the embedded watermark are inaudible and have good robustness against kinds of attacks such as white noise，low-pass filtering，re-sampling and compression.

Key words: audio watermarking, masking model, quantization, robustness