[M4IF Technotes] Audio Reference Software

[Luca Piccarreta]

Hi,
I was testing the reference software (audio), MPEG4-AAC.
Main Prediction (the one with Correlation, variance ecc.) 
and noted that there are differences in the output of Release
and Debug versions.
These differences are negligible from a human listener point of view
(2-3 in 16-bit output), but this may be not pleasant when one
is trying to match his decoder to the ref's one.
Is there any "audio expert" who wants to discuss about this?
The incriminated sequence is am02_44.mp4 and the mismatch
seems to be due to the switch "Improve Float Consistency" in
the release version (I'm using Visual C++).
In my opinion, one could object to the way coefficients are stored
in the reference software (and in the specs). The loss of precision
is enormous, and I can't think of any reasonable way of doing
the whole prediction in integer math.
Thanks in advance to anyone who want to discuss about that.
Luca Piccarreta.