为了达到隐藏后信号良好的听觉不可感知性，引入了音频编码理论中广泛使用的听觉模型用于音频数据隐藏研究。
To achieve fine imperceptible characteristic, the audio model in widely used audio coding theory is introduced into the audio data hiding research.
第二章介绍了中频数字化软件无线电的结构，并阐述了软件无线电的关键理论和软件无线电中的信号处理技术。
Chapter 2 sets forth the structure of IF (Intermediate Frequency) digital Software Radio, the critical theory of Software Radio and the signal processing technique about it.
介绍中频数字接收理论；
介绍中频数字接收理论；
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