A reason why Mac speakers sound better and louder than most

Post by captainmuon » Tue, Feb 28, 2023, 1:14 PM UTC

povik wrote: post #124

captainmuon wrote: post #32

I wonder how they model the energy output of the speakers. In principle you could have a function that calculates the energy of the spectrum and integrate that over time. If you put out too much energy, what do you do? Reduce the overall volume, apply a frequency cutoff, or a low-pass-filter? I feel there are so many variables here, and it is going to be hard to replicate what Apple does. I know the Asahi-Linux peopl…

Hi, I wrote the Linux kernel drivers for speaker output on the new ARM64 Macs, so I can shed some light on this. > I wonder how they model the energy output of the speakers. Simple. The speaker codecs (special made for Apple, but e.g. compatible to https://www.ti.com/product/TAS2764 ) give you current/voltage measurements you can calculate the power from. It's what they call I/V sense. > In principle you could have a…