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DTMF

于 2010-12-29 发布 文件大小:1KB
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代码说明:

  实现dtmf双音多频信号的matlab仿真编码和解码,采用coertzel算法。(Methods of measurement for pushbutton telephone with DTMF )

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    小波去噪,分程3种,第一对信号进行强制消噪处理并图示结果;第二用默认阈值对信号进行消噪处理并图示结果;第三用给定的软阈值进行消噪处理。以及运行图。(Denoising , sub-way three kinds , the first pair of signal processing and noise cancellation forced the results shown second by default thresholds for signal processing and illustrates the results of de-noising third with a given soft threshold de-noising deal with . And a diagram.)
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