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Old 2008-06-26, 04:00 PM
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GRC GRC is offline
Trader since 1980
 
Join Date: Jun 2007
Location: UK
Re: 32kHz upsampled to 44.1kHz - lossy?

Yeah, but my point is that if you

a) sample analogue to 44.1kHz directly, or
b) sample analogue at 48kHz, then sample-rate-convert it to 44.1kHz

you haven't gone below the final resolution.

If you sample analogue at 32kHz, then upsample it to 44.1kHz, you've gone 'below the line' as it were, and you'll never get back what you lost when you went to 32kHz. In the same way as you never get back what was lost in conversion to mp3, except with mp3 you've lost it when you convert it to mp3; with the 32kHz upsampling, I see it as the upsampling, whilst not necessarily 'losing' data, is having to fill in for what wasn't captured in the 32kHz transfer.

I see a parallel between lineages of

Analogue -> 32kHz -> 44.1kHz and
Analogue -> mp3 -> 44.1kHz
Analogue -> post-2008 ATRAC -> 44.1kHz

and suggest that if the second and third aren't permitted, there might be a case for the first being declined also.
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