[Mp4-tech][audio] High sampling rates in AAC - why?

D.Domazet Danijel.Domazet zg.htnet.hr
Tue Oct 26 13:11:45 EDT 2004


Hi all,
As we know, AAC supports high sampling rates, for example 88.2kHz and 96kHz.
What is the purpose of this? If I was to test the encoder for quality at
this sampling rates, how would I do that? Is down-sampling a must since
humans can't hear this high freqs? Or AAC is used by bats and whales...
Daniel


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