[Mp4-tech] [Audio] Querries on Integer implementation of SBR Decoder

[Dattaguru B.N.]

Dear All,
I want to know some information on integer
implementation of SBR decoder.
For the QMF analysis filter, input is the output of
the windowing ( output of AAC ).  
Integer implementation of AAC decoder will have an
error upto 2 bits (output of windowing) or may be more
also!!!.  
As QMF analysis filter consists of lots of cumulative
additions and multiplications,  the small difference 
in the input ( output from windowing)  will result in
large error at the output of the analysis filter.
Hence, there will be a huge difference at the output.
Could you please let me know 
1.  Is there any specific RMS/LSB error values
specified for integer implementation of SBR decoder by
Coding technologies? 
2. Is there any specific implementation for integer?
Thanks and regards,
Dattaguru
_______________________________
Do you Yahoo!?
Declare Yourself - Register online to vote today!
http://vote.yahoo.com