eio
100+ Head-Fier
- Joined
- Mar 19, 2009
- Posts
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- 106
for hifi path, device designers do try to provide as much power supply as possible...
battery life at high volume typically is not a major concern (battery life at low volume is, and it's typically handled by IC designers).
the most important limiting factors are:
available ICs. you don't have high voltage nor negative voltage in a smartphone, so you need ICs specially designed for mobile.
PCB space. you simply don't have the real estate to put better power supply circuits on, sometimes even no space for an amp. hence all those highly integrated decoder+dac+amp chips. and remember that the hifi path is a secondary path, you cannot get rid of the soc bundled codec since there are many things the hifi path cannot do, like voice calls.
interference. it is much more audible than sound quality improvements for an average user.
cost. audio components are quite cheap actually, a budget fingerprint module can easily cost more than a top tier hifi solution. but 3.5mm audio doesn't get so much weight in a smartphone.
as of those adaptive boost/protection processings, they are for speaker/earpiece, where you want to sqeeze highest volume from smallest speaker possible.
battery life at high volume typically is not a major concern (battery life at low volume is, and it's typically handled by IC designers).
the most important limiting factors are:
available ICs. you don't have high voltage nor negative voltage in a smartphone, so you need ICs specially designed for mobile.
PCB space. you simply don't have the real estate to put better power supply circuits on, sometimes even no space for an amp. hence all those highly integrated decoder+dac+amp chips. and remember that the hifi path is a secondary path, you cannot get rid of the soc bundled codec since there are many things the hifi path cannot do, like voice calls.
interference. it is much more audible than sound quality improvements for an average user.
cost. audio components are quite cheap actually, a budget fingerprint module can easily cost more than a top tier hifi solution. but 3.5mm audio doesn't get so much weight in a smartphone.
as of those adaptive boost/protection processings, they are for speaker/earpiece, where you want to sqeeze highest volume from smallest speaker possible.