Hello
I want to use pcm 1802 adc and esp32
And use fft.
I want to make sound level meter with analysis sound but i dont know there are library file for pcm 1802
There may be a solution for using the PCM1802, but I cannot find it right off.
There is a 24bit ADC alternative:
ADS1252: Tutorial on High precision (24-bit) ADC - Using Arduino / Sensors - Arduino Forum
@Noisecontrol, your topic has been moved to a more suitable location on the forum. Installation and Troubleshooting is not for problems with your project 
See About the Installation & Troubleshooting category.
Didn't read the instructions, did he? Not a good start to a project. 