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

[Dattaguru B.N.]

Hi,
I feel, high sampling rates would help us in better
band widths.  Higher the sampling rate, better will be
the band width.  
If I am wrong, please correct.
Thanks 
Datta
--- "S. R. Quackenbush" <srq ieee.org> wrote:
> Hi,
> 
> One very good reason for running AAC at 96 kHz is
> that it interoperates with
> 96 kHz D/A converter, and these converters permit an
> analog anti-imaging
> filter with much lower slope (e.g. passband at 20
> kHz, stopband at 48 kHz)
> and hence less phase distortion in the conversion.
> 
> Schuyler Quackenbush
> ---
> Dr. Schuyler Quackenbush, Audio Research Labs
> 336 Park Ave, Suite 200,  Scotch Plains, NJ 07076
> office: 908 490 0700	  srq audioresearchlabs.com
> mobile: 908 612 9423
> fax:    908 842 9151	  www.audioresearchlabs.com
> 
> 
> 
> > -----Original Message-----
> > From: mp4-tech-bounces lists.mpegif.org
> > [mailto:mp4-tech-bounces lists.mpegif.org]On
> Behalf Of D.Domazet
> > Sent: Tuesday, October 26, 2023 6:12 AM
> > To: mp4-tech lists.mpegif.org
> > Subject: [Mp4-tech][audio] High sampling rates in
> AAC - why?
> >
> >
> > 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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> >
> 
> 
> _______________________________________________
> NOTE: Please use clear subject lines for your posts.
> Include [audio, [video], [systems], [general] or
> another apppropriate identifier to indicate the type
> of question you have.
> 
> Note: Conduct on the mailing list is subject to the
> Antitrust guidelines found at
>
http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php
> 

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