iphone 4s bit perfection
May 19, 2013 at 3:26 AM Thread Starter Post #1 of 5

neeverr

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Hi everybody,
 as you know the cirrus/wolfson DACs in our mobile phones could manage 24bit/96khz flows as well.
Unluckily it seems that the iOS is going to limit this feature handling a unique resolution/freq combination to feed the DAC.
 
Here my points:
- is it true? (ie.: if I put in my iPhone 24/48 files, iOS is going to down-sample it to 16/44.1 before sending the data flow to the cirrus dac)
- can anyone confirm that the "right combination" for the iphone 4s is 16/44.1?
 
If everything is confirmed, it would makes no sense to have 24/48 or 16/48 in our iphones... it could be even worse (due to the realtime down-sampling applied by the iOS). 
 
Thanks in advance for any feedback and sorry for my poor english.
 
ps.: of course using the 3rd party players (ie.: golden ear) does not fix the situation.
 
May 20, 2013 at 2:11 PM Post #3 of 5

KT66

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is the Iphone4 meant to be able to play 24bit files?
 
May 27, 2013 at 2:12 AM Post #4 of 5

neeverr

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iphones can actually play files 24bit/48khz (checked many times on my iphone 4s and 5).
 
my fear is that *probably* the iOS applies a real-time down sampling before pass these data-flows to the cirrus DAC (for several reasons mainly linked to energy saving and standardization).
 
so my point is: which exactly is the resolution/freq that arrives to the iphone DAC?
 
cheers
 

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