提出了一种基于傅立叶域的音频水印嵌入算法。该算法充分利用人耳听觉系统特性，把水印信号嵌入到音频信号快速傅立叶变换后的相位系数上。实验证明，该算法易于实现，具有较好的不可觉察性及鲁棒性，是一种实用的音频水印算法。关键词：音频水印；快速傅立叶变换；鲁棒性【Abstract】 An audio watermark embedding algorithm based on Fourier domain is proposed.This algorithm takes good advatage of human audio system and embeds watermark into the phase of audio signal after FFT. The experimental results show that the algorithm is realized easily and visually effective with satisfying imperceptibility and robustness.【Key words】Audio watermark; FFT; Robustness