[CELT-dev] One question about comparison between HE-AAC v2 and CELT

[wei]

But Cisco adopts HE-AAC in it's telepresence product which is the dominant
HD video conference product. They use hardware to decrease the delay?

On Thu, Aug 5, 2010 at 9:59 PM, Alex Converse <alex.converse at gmail.com>wrote:

> On Thu, Aug 5, 2010 at 9:49 AM, wei <tsingmei at gmail.com> wrote:
> > Hi ,
> >
> > I visited celt website. I saw the comparison between AAC-LD with celt.
> But
> > how about the HE-AAC? If the scenario is that we limit the bandwidth to
> > 50kbps, will music encoded by HE-AAC v2 be better than CELT? What's
> HE-AAC
> > v2's delay?
> >
>
> He-AACv2 is not a low delay codec at all. It is much worse than
> AAC-LC. It has a delay of about 405 ms.
>
> See
> http://www.eetimes.com/design/audio-design/4015911/Algorithmic-delay-and-synchronization-in-MPEG-audio-codecs
> for a full analysis
>
> Regards,
> Alex Converse
>
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