> On Jun 10, 2016, at 10:37 AM, じょいすじょん <dangerwillrobinsondan...@gmail.com> 
> wrote:
> 
> I assumed the OP is interested to know whether listening to the playback in 
> QuickLook is going to be a valid exercise
> for a pro audio person, versus opening the file in any particular application.

If the sample rates didn’t match, and CoreAudio didn’t resample, the audio 
would be played back at the wrong speed & pitch, which would be pretty awful — 
for example, if it ran a pro audio file sampled at 192kHz directly into a 
44.1kHz interface, it would play at ¼ speed, which is unlistenable. Obviously 
this doesn’t happen.

I’d rather wait for the OP himself to explain the question in more detail.

—Jens
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