Microphone model on ReSpeaker

We are trying to use “ReSpeaker 6-Mic Circular Array kit for Raspberry Pi” and “ReSpeaker Core v2.0” for an application.

Our application requires each MEMS microphone on board removed and re-connected with shielded cable,

and we would like to know the model of microphones in case they were broken during refactoring process.

Unfortunately, we have not found any information of the model in wiki pages so far.

If it is possible, please let us know that.

Hi palette1972,

ReSpeakers are using Analog MEMS Microphone AOS3729A-T42-NXC and you can find the datasheet here : <LINK_TEXT text="https://datasheet.lcsc.com/szlcsc/18121 … 38759.pdf ">https://datasheet.lcsc.com/szlcsc/1812121637_SANICO-AOS3729A-T42-NXC_C338759.pdf </LINK_TEXT>


I’m using ReSpeaker 4-Mic Array for Raspberry Pi and I’m wondering if this micArray is using the same microphone as the one you mentioned!
Or is there any where I can find information about more details about the microphone on ReSpeaker Array?

Thank you in advance!


I’ve found microphone information from the schematic of ReSpeaker 4-Mic Array for Raspberry Pi!
The microphone is SPU0414HR5H-SB instead, with datasheet here: https://www.mouser.com/datasheet/2/218/SPU0414HR5H-SB-28439.pdf

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ReSpeaker 4-Mic Array for Raspberry Pi Resources

Source: https://wiki.seeedstudio.com/ReSpeaker_4_Mic_Array_for_Raspberry_Pi/

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I’m kinda confused.

According to the schematic from

I found the mic type as SPU0414HR5H-SB on the last page.

However, I checked the MEM mics on my ReSpeaker Mic Array and found that they look much more similar to the mic type mentioned here:

which should be MSM321A3729H9CP.

Therefore, I’m guessing that the PDF file from the website is incorrect.

Nana Chang

I believe the schematic version is the original one, @Baozhu can you please confirm! Thanks.

@jiachenglu Please help check it.


Hi @Nana_Chang
I have checked the microphone material list, the 4-Mic Array model is MSM321A3729H9BP.
Here is the datasheet. https://files.seeedstudio.com/products/103030216/MSM321A3729H9BP.pdf

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