opus - Aug 2010 - One question about comparison between HE-AAC v2 and CELT

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?

Thank you very much.

Alex
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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