> Date: Thu, 30 Mar 2000 12:05:30
> From: Shawn Riley <[EMAIL PROTECTED]>
>
> I had another look at the code, but not long enough to find where the
> masking is calculated. What happens, if, a person hears a sharp attack
> in one ear only... does it mask anything heard in the other ear? Does
> Lame take this into account? Just something I'm curious about.
>
If it really is a sharp attack in only one channel, then the
masking thresholds between L and R channels will be very
different, and this will disable mid/side encoding and force
regular stereo encoding. For regular stereo, the L and R
masking thresholds are completely independent, so the sharp
attack will not be used to mask signals in the other channel.
AAC does allow this: maskings in the L (or R) channel are
allowed to mask signals in the other channel. LAME only allows
this when the frame is encoded in mid/side stereo.
Mark
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