[Mp4-tech] [Audio] Intensity Stereo and M/S stereo

[Saptarshi Ghosh]

Hi all,
Can anyone clarify the following doubt?
Can BOTH Intensity stereo and M/S stereo be required
to be used on a single scalefactor band ? (it seems
yes, from the specifications which describes the
functions invert_intensity( ) to reverse the phase of
intensity if M/S has been used for a particular sfb)
If yes, then it seems that a considerable number of
redundant operations will have to be done in case of a
sfb where both have been used. Since in M/S, we derive
the left and right channel info from what is
transmitted in the stream, and then in Intensity
stereo tool, we overwrite the info derived for the
right channel by 
     right channel data = scale * left channel data
Thus the calculations done during M/S processing
become redundant.
Could anyone help in this regand?
Regards,
Saptarshi.
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