Insted of just disabling J-stereo at 160+ could we not change the M/S
switching alg to take into account 'bit-pressure' so that it would weigh
it's estimated 'badness' of encoding w/ M/S against the amount of spectral
info.
This way, it would seldom encode w/ Mid-side at high bit rates unless the
side channel contains almost no energy.
In VBR mode we could have the quality setting affect a threshold of side
channel energy to tell it when to up the bitrate to avoid M/S or just
encode in MS. It would be nice to tell it to always use M/S when the side
channel is digial-silence. (mono input mixed with stereo).
As far as VBR goes would it be wise to ignore the set minimum bit rate and
encode at 32Kb/s during frames consisting of nothing but digital silence?
This would allow me to encode with a minimum bitrate of 160Kb/s, but allow
it to drop to 32Kb/s during frames of true silence and only use M/S if the
side channel is almost non-existant.
--
The comments and opinions expressed herein are those of the author of this
message and may not reflect the policies of the Martin County Board of
County Commissioners.
--
MP3 ENCODER mailing list ( http://geek.rcc.se/mp3encoder/ )
