The limitation of the chip is a given. That's what the manufacturer
offers. 

Because the typical application for what it is made for, usually won't
go higher then 48kHz. 
That 48kHz limit you'll find in most mobile phones, tablets,
Ubuntu,Windows asf asf. They all resample to a common samplerate of
usually 48kHz by default.

It seems the chip doesn't provide an automatic DSP bypass or DSP OFF for
samplerates > 48khz. 
This could cause trouble.  In filters that a. degrade the sound and b.
doesn't work at all.

A driver needs to put a chip into modes that a. avoid malfunction or b.
tells the OS or better the app that certain samplerates are not
supported if these would cause malfunction. 

Example: 
There could be a very simple mod from a driver perspective: 
1. For samplerates higher than 48khz the DSP/filters are turned off or
bypassed. Obviously the chip needs to provide that "switch". If there's
no such thing
2. Don't allow samplerates higher than 48khz. A proper resampling of
samplerates >48khz to <48kHz on the LMS server probably gives better
quality then running an inadequate filter on the PCM5122. 

Cheers



::: ' Touch Toolbox and more' (http://soundcheck-audio.blogspot.com) :::
by soundcheck
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View this thread: http://forums.slimdevices.com/showthread.php?t=97046

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