Real-time robust voice watermarking method based on logarithmic base frequency-adjustable domain logarithmic polar coordinates

The invention provides a real-time robust voice watermarking method based on logarithmic base frequency adjustable domain logarithmic polar coordinates, relates to the technical field of multimedia signal processing, and aims to solve the problems that a high-capacity watermark cannot be embedded into existing voice in real time and the imperceptibility and robustness are poor after the watermark is embedded. According to the method, a real-time watermark embedding process and a watermark extraction process which are matched with each other are utilized, watermark embedding is completed in a frame-level real-time audio clip according to the characteristics of amplitudes on logarithmic coordinates, watermark extraction is completed in a normalized frequency correlation value fusion mode, and the accuracy and imperceptibility of watermark extraction are improved. 本发明提出一种基于对数底可调频域对数极坐标的实时稳健语音水印方法，涉及多媒体信号处理的技术领域，针对现有语音无法实时嵌入大容量水印，且水印嵌入后的不可感知性和鲁棒性差的问题，利用互相配合的水印实时嵌入过程与水印提取过程，在帧级别的实时音频片段中根据对数坐标上幅值的特点完成水印的嵌入，通过归一化频率相