i2s microphone from (rasp pi) google voice hat ??

[richrarobi]

Maybe a possibility?
I have a stereo mic from a google voice hat. I have never used the mic, I used the hat as a sound card only. (It came as a freebee in a magazine!)
I wonder about the feasibility of connecting the mic to my T4 audio project sometime. It also maybe something where others may have an interest?

The microphone unit is a separate plug in unit. see schematics from google:-

https://github.com/google/aiyprojects-raspbian



It looks like it could attach directly to pins 3,4,5 of the Teensy 4. I haven't a clue where it would connect in software.

Tell me if I am crazy?

 

[gfvalvo]

I'm not a fan of that particular microphone as it violates the I2S timing specifications. See: https://forum.pjrc.com/threads/47010-I2S-Microphone-(SPH0645LM4H-B)
Instead, I'd go with something from InvenSense.

 

[richrarobi]

Thanks for the warning. Better to spend a few pounds than mess with it.