Interesting. So, on top of, I presume, whatever DSP you get from the sound chipset/SoC, there could be other layers of DSP throughout the hardware too. That seems like a real pain in the ass, to be honest. (Though personally I'd really prefer something that protects the voice coils from overheating to be in hardware at least, if nothing else.)

(I still do genuinely wonder what's going on inside of SOF on modern Intel laptops, too. That's not separate from the chipset and I don't think it gets tuned for specific laptop acoustics. So what does that do?)