How good is ESP32 DAC quality for audio applications?
I want to connect DAC output to the audio amplifier and pass to the speaker. But I'm not sure about DAC quality for audio.
Of course I don't expect very high quality sounds. But I expect at least understandable speech.
Any suggestions?

Thank you!!!

What is the maximum SPI speed connected via GPIO matrix?

Here is the ESP32 recourse usage report in Arduino: Sketch uses 151,467 bytes (14%) of program storage space. Maximum is 1,044,464 bytes. Global variables use 20,496 bytes (6%) of dynamic memory, leaving 274,416 bytes for local variables. Maximum is 294,912 bytes. My SPI flash size is 4 Mbytes so wh...

Hi,

In which SPI port should I connect the external SPI SRAM?

Thanks.

Kolban, Thank you very much for your response. Now it is more clear for me. So it is not possible to reprogram ROM, which is good. Could you please let me know where are located WiFi and Bluetooth stacks? In the ROM or it comes with the firmware? If I program ESP32 module via Arduino environment wha...

Hi, I have several questions about ESP32 ROM and firmware. 1. I don't understand well the meaning of firmware. Is it the software located in the internal ROM? Or is it located in the external flash. 2. If it is located in the internal ROM then I need firmware sources to make changes and then update ...