[CELT-dev] One question about comparison between HE-AAC v2 and CELT
Jean-Marc.Valin at USherbrooke.ca
Thu Aug 5 08:49:26 PDT 2010
wei <tsingmei at gmail.com> a écrit :
> Thank you. If I want to implement an internet based Karaoke software, and
> the bandwidth is around 50kbps, should I use Celt or AAC LD? I want to
> ensure the stereo effect in the software :-)
I don't believe any existing codec can give you good stereo music
quality at 50 kb/s *while* having a low delay. You should either
switch to mono or increase the bit-rate.
> On Thu, Aug 5, 2010 at 11:06 PM, Gregory Maxwell <gmaxwell at gmail.com> wrote:
>> On Thu, Aug 5, 2010 at 11:01 AM, wei <tsingmei at gmail.com> wrote:
>> > But Cisco adopts HE-AAC in it's telepresence product which is the
>> > HD video conference product. They use hardware to decrease the delay?
>> The delay we're talking about is algorithmic delay. You can't reduce
>> it with faster hardware. You can only reduce it via changing the
>> format (or sometimes by increasing the sampling rate).
>> I believe all AAC using Cisco telepresence equipment that I've seen uses
>> For example:
>> Example configurations here show AAC-LD:
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