ALSのオプションのEncoding Options:がよく分からん・・・
-7 : Set parameters for optimum compression (except LTP, MCC, RLSLMS)
-a : Adaptive prediction order
-b : Use BGMC codes for prediction residual (default: use Rice codes)
-e : Exclude CRC calculation
-f# : ACF/MLZ mode: # = 0-7, -f6/-f7 requires ACF gain value
-g# : Block switching level: 0 = off (default), 5 = maximum
-i : Independent stereo coding (turn off joint stereo coding)
-l : Check for empty LSBs (e.g. 20-bit files)
-m# : Rearrange channel configuration (example: -m1,2,4,5,3)
-n# : Frame length: 0 = auto (default), max = 65536
-o# : Prediction order (default = 10), max = 1023
-p : Use long-term prediction
-r# : Random access (multiples of 0.1 sec), -1 = each frame, 0 = off (default)
-s# : Multi-channel correlation (#=1-65536, jointly code every # channels)
# must be a divisor of number of channels, otherwise -s is ignored
-sp#: Enforce ALS Simple Profile Level # (currently only #=1 is defined)
-t# : Two methods mode (Joint Stereo and Multi-channel correlation)
# must be a divisor of number of channels
-u# : Random access info location, 0 = frames (default), 1 = header, 2 = none
-z# : RLSLMS mode (default = 0: no RLSLMS mode, 1-quick, 2-medium 3-best )