The state of the art of digital pianos is based on sampling technology. Each note is a recording of how it sounded at a specific moment, without taking into account the complexity of the instrument.

数码钢琴艺术的现状是基于采样技术，录制下每个音符在一段时间内的发声，丝毫没有考虑到乐器本身的复杂性。

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Then, it discusses multi rate digital signal process (MRDSP) technology in SDR, emphasis is put on the analysis of band pass signal orthogonal sampling structure.

接着，探讨软件无线电中的多速率信号处理技术，重点分析软件无线电中的带通信号正交抽取结构；

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Digital signal processing technology is used to obtain a diversity of sampling results under different sampling approaches.

运用数字信号处理技术在不同的取样方式下得到各异的处理结果。

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