MEMS1 project - How are the data coming from 4 microphones organized ?

[EEnco.1]

I'm using MEMS1 Microphone streaming project to record PDM data coming from 4 microphones and convert it into PCM data. 

I'm wondering how I can access to the PCM data coming from each microphone.

From what I have seen so far, the output of the project is PCM_Buffer. As I want 48 kHz PCM audio, the size of PCM_Buffer is 48 kHz *4*1ms = 192 uint16. But the problem is that I want to separate the PCM data into 4 different buffers (for another project) and, if i understood correctly, the data of PCM_Buffer is mixed with all the microphones, I don't know how.

Any idea about how you would do it ? Thanks

[易刘.1]

Seeing that you are working on a project about mems recently, I would like to ask you some questions about mems

[易刘.1]

my email address：[e-mail]

Thank you