基于傅立叶变换,提出了一种面向空气信道传播音频信息隐写算法.该算法选取原始音频信号傅立叶变换域中的低频系数,提取其相位角系数,并对其进行修改,将经BCH纠错编码的隐写信息嵌入,并且嵌入量较大,隐藏效果好.实验结果显示,该算法能够有效抵抗空气传播过程中的AD/DA变换攻击、空气噪声干扰攻击,以及录制后的常见信号处理攻击、约30%的重采样攻击等其他攻击,平均误码率可控制在3.5%以下,算法具有很好的鲁棒性. Based on the Fourier transform, an audio-oriented steganography algorithm for air channel propagation is proposed, which takes the low frequency coefficients in the Fourier transform domain of the original audio signal, extracts the phase angle coefficients, modifies them, The embedding information is embedded, and the embedding amount is large and the concealing effect is good.The experimental results show that the proposed algorithm can effectively resist AD / DA transformation attack, air noise interference attack and common signal processing attacks after airborne propagation, About 30% resample attacks and other attacks, the average bit error rate can be controlled below 3.5%, the algorithm has good robustness.