Most windows laptops will do something like this by default to enhance the sound. Part of what ships as "Dolby Atmos" is some EQ-ing and normalization, with the default not being flat. It is just necessary to make those tiny laptop speakers sound half decent and not crap out all the time.

You can duplicate that tuning

https://github.com/antoinecellerier/speaker-tuning-to-easyef...

You can actually extract the Dolby Atmos settings and run them under either EasyEffects or natively under Pipewire without EasyEffects, using the Python script at https://github.com/antoinecellerier/speaker-tuning-to-easyef.... (Tested on my Thinkpad, works great).