To hide information in speech signal, which is a special kind of audio signals, one must consider the characteristics of human audio system.

语音信号作为一种特殊的信息隐藏载体，在其中进行信息隐藏时必须充分考虑人类的听觉特性。

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Information hiding is a technology which embeds the important data into digital video, audio or picture to hide the existence for anonymous communications.

信息隐藏是一种将有用的或重要的信息隐藏于视频、音频或图像等当中以掩饰其存在，实现隐蔽通信或隐蔽标识的技术。

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