Hello everyone,

I'm new here . I work on MP3 and AAC (LC, LTP, HE-AAC) for now 6 months.

I'm now ready to test with iso vectors. So I bought everything I need from ISO web site .

For MP3 and AAC-LC and LTP I have no problem. I passed .

But for HE-AAC I don't know how to use the figure given in 14496-4/Amd8 in table AMD8.3 .

For exemple it's given for QMF test vectors Max diff 5 and RMS(linear value) 1.4.

What should I do now with thoses values. Is Max diff mean 5*3.05*10-5(Q15)?
is the RMS(linear value) mean 20*log10(1.4)=3dB so I need to be under 3dB. (of course I'm hopefully)?

Please Help I don't know wath to do with my figures. So I'm not able to say if I'm compliante or not.

Hey, nobody can help me?

Does it means that I'm the only personne how try the ISO norme on my decoder?
I have a client ansking for it that why...

Please is someone understanding something to thoses figures whitout scale, or unity?

Hi,lebenworld

I'd like to study on the HE-AAC, but I haven't got the standard of the SBR yet.
Would you like to send me a copy?
My e-mail :wangyan20014000@163.com
thanks for the advance.