Hi
I am planning to construct a mems microphone array with 4 to 5 microphones, such as SPH0690LM4H-1 Datasheet Rev A.docx (mouser.co.uk)
These are PDM interfaced. If I have understood it correctly, these just require a CLK pulse, and I am reading digital databack.
I have been advice by ESP32 to use a CODEC IC such as ES7210 pdf, ES7210 Description, ES7210 Datasheet, ES7210 view ::: ALLDATASHEET :::
They mentioned ESp32 would add signal-to-noise ratio of around 58dB to the signal without it.
I am not sure why this would happen as MEMS are digital mics.
Had anyone got experience in using ESP32 and MEMS microphones?
I am planning to construct a mems microphone array with 4 to 5 microphones, such as SPH0690LM4H-1 Datasheet Rev A.docx (mouser.co.uk)
These are PDM interfaced. If I have understood it correctly, these just require a CLK pulse, and I am reading digital databack.
I have been advice by ESP32 to use a CODEC IC such as ES7210 pdf, ES7210 Description, ES7210 Datasheet, ES7210 view ::: ALLDATASHEET :::
They mentioned ESp32 would add signal-to-noise ratio of around 58dB to the signal without it.
I am not sure why this would happen as MEMS are digital mics.
Had anyone got experience in using ESP32 and MEMS microphones?