I'm working on a baby monitor. I've got this microphone: https://invensense.tdk.com/products/digital/inmp441/ So i got this audio input to work :D ! Here I'll share my findings: Here's the setup code: (note that this mic is not PDM) i2s_config_t i2s_config = { .mode = (i2s_mode_t)(I2S_MODE_MASTER | ...

So your question about PDM prompted me to search around, and the guy who created this INMP441 breakout PCB tells me that they *dont* use PDM to the best of his knowledge: https://hackaday.io/project/4411-inmp441-mems-microphone So perhaps this thread has run its course, and I apologise for potential...

Hi, thanks for replying, really appreciate it :D I also had a look through the datasheet and I came away confused. It doesn't explicitly say it's a PDM mic or not, so I assumed that it was one, given the price. Perhaps it doesn't require PDM mode. In fact, i can get audio (of very poor quality) when...

Hi, I've spent all weekend trying to get my ESP32 to input audio using I2S. Now i've had some success with I2S in 32 bit mode, however it was quite distorted, but you could make out that it was actually working a bit. I noticed it outputs a signed value, where the lowest byte is always 0x00. I since...