Curious about output prompt : dsp vs classification

[SunBeenMoon]

Hi,
Thank you for your wonderful example about ESP32 board!

But I'm curious about the difference between DSP and Classification section.
The Photo are below.

I'm using the ESP-EYE board.
When I used another board, when I used DSP, I got 0ms in Classification.
The ESP32 board doesn't appear to have a DSP module, but there's a DSP in the results window.

Regards,