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Topic: HE AAC Reference Software (Read 7842 times) previous topic - next topic
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HE AAC Reference Software

Hi,

I have the ISO reference software of the HE-AAC v2. Its currently decoding only SBR but not the PS if I use the stream with SBR and PS.
Is there any macro to be enabled for PS decoding to work ?
Its currently generating half the data.

Thanks,

HE AAC Reference Software

Reply #1 –
PS, and if that doesn't work, try looking at the help screen of the decoder.

HE AAC Reference Software

Reply #2 –
Quote from: menno on
PS, and if that doesn't work, try looking at the help screen of the decoder.


The PS decoding related function ( DecParFrame() ) is in  decifi.c file and are put under a Switch statement which selects according to the object type "aot". We are always getting the "aot" as AAC_LC while initialization of parametric decoding i.e. DecParInit() funciton is under the "aot" type ER_PARA.

However we are getting full output(double that of one with ISO reference code) with 3gpp fixed point implementations.

Thanks,


Quote from: menno on
PS, and if that doesn't work, try looking at the help screen of the decoder.


I forgot to tell you that using PS in preprocessor definition doesn't do.

HE AAC Reference Software

Reply #3 –
Quote from: menno on
PS, and if that doesn't work, try looking at the help screen of the decoder.


Thanks,
I got it from your personal message and now its running fine with the mp4mcDec folder.

HE AAC Reference Software

Reply #4 –
Hi,
Can u plz tell me from where u had taken Reference code of HE-AAC and its reference bitstreams.







Quote from: audio_geek on
Hi,

I have the ISO reference software of the HE-AAC v2. Its currently decoding only SBR but not the PS if I use the stream with SBR and PS.
Is there any macro to be enabled for PS decoding to work ?
Its currently generating half the data.

Thanks,

HE AAC Reference Software

Reply #5 –
We took it from the ISO website.
for the reference software for eAAC+, use the one with "mc" folder.
 

HE AAC Reference Software

Reply #6 –
sorry i cant answer, i just starting to build a decoder as well.

could you tell me from where did you got the standard software? could one use it for his own needs?