关于AFE5809,decimation功能如何实现？

正在测试AFE5809抽取功能，通过给的sonar例子不能实现其抽取功能，想知道如何实现

Amy Luo：

您好，

下面链接帖子可能对您有帮助：
e2e.ti.com/…/529305

user4442115：

回复 Amy Luo:

你好，可以加你微信，详细询问您吗？我的微信号13691129216，如果您方便，请加我一下，谢谢。

user4442115：

回复 user4442115:

1. Decimation function is divided into decimation filter and de sampling decimation. What kind of filter is decimation filter and how to generate its coefficients? Can an example of generating filter coefficients be provided?
2. In slou338 PDF file, chapter 8.3, demodulation mode test part, and the fourth test, demod M = 4 I / Q test mode, the coefficients of its decimation filter can be seen from the txt file, but the specific parameters of the cut-off frequency of the filter are unknown, please explain in detail.
3. In the tidu702pdf file, chapter 5.5, according to the test steps provided, the performance of signal-to-noise ratio improvement cannot be achieved.