Development of audio watermarking based on spatial masking

提出了一种基于空间掩蔽的音频水印方法，空间掩蔽是人类听觉系统中观察到的一种现象，尚未在音频水印方法中使用。在研究的初始阶段，研究了通过耳机正确再现声音空间。然后设计了水印方法，通过使用能够比普通立体声格式更精确地呈现声音空间的音频格式将水印信号放置在宿主信号附近。

An audio watermarking method based on spatial masking, which is a phenomenon observed in the human auditory system and had not been used in audio watermarking methods, has been developed. At the initial stage of the study, correct reproduction of sound space via headphones was investigated. The watermarking method was then devised, placing a watermark signal in the vicinity of the host signal by the use of an audio format which is capable of rendering sound space more precisely than the ordinary stereo format.