Hello,

I am trying to record temperature and humidity data with on ESP32-WROOM-32 with the Sensor DHT22.
Everything works fine until the first loop() is done. After that I get a 'Stack Smashing Protection failure' error and the esp32 reboots.

I am quite new to C++ but I think the problem is the ...

Using the example code from https://github.com/espressif/esp-idf/blob/master/examples/peripherals/i2s/i2s_audio_recorder_sdcard/main/i2s_recorder_main.c results in loud noise again and sounds broken again:

#define SAMPLE_RATE (44100)
#define SAMPLES_PER_BUFFER (1024) // 256 samples per buffer ...

Hi,

You can try:

const size_t recordSize2s = (SAMPLE_RATE * (BITS_PER_SAMPLE / 8)) * 2;


Hello,
using this still leads to the same error. Passing a size with the value 64000 to init the buffer static int16_t i2sBuff[recordSize2s]; is just too big and overflows the DRAM I guess.
I found a ...

How do you import the raw file into Audacity? From your data, you should import it as signed 16-bit, little-endian. If you make a mistake there, you'll indeed get weird noises.


Thank you for your answer. Unfortunatley this was not the problem because I imported the raw file with 16 bit unsigned ...

Hi,

Can you test using this code?

https://github.com/pedrominatel/esp32-projects/tree/master/demo/sound_spectrum

This code supports all the 3 microphones modes (ADC, PDM and I2S).
Using this example you can check if there is any noise being generated by your microphone (HW issue).

You can ...

Hello,
I am currently desperatly trying to get a NMP441 microphone properly working with a ESP32.
The code I am using seems to work but when I send the data off to my server hosted on a rpi the audio sounds broken and is just a very loud noise. My guess is that I am parsing the data from the ...