[Mp4-tech] [HE-AAC] PS conformance test

Alex Converse alexc improvsys.com
Fri May 23 15:05:43 EDT 2008


Andy Quan wrote:
> Does ISO have conformance testing specification for aac+ v2 decoder?
> Anybody knows its name?
>   
 Parametric stereo conformance is covered in 14496-4:2004/Amd 11:2006 
and Cor 2:2007
> I find that 3GPP TS 26406 has introduced a set of testing vectors and
> set ODG score as its metric. However, unlike ISO SBR testing, this
> 3GPP testing method is not dedicated for PS tools as there is no such
> a testing framework that can block errors from LC+SBR.
>   
The decoder conformance procedure is similar to SBR. But your mention of 
ODG makes me think that you may be referring to encode. For encode all 
the ISO spec is going to tell you is if you have a properly formatted 
bitstream. For decode 26.406v7.0.0 defers to ISO.
Regards,
Alex Converse


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