AOT / SIdx / Chan_Cfg / DSE / MS / TNS / Blockswitching
al_sbr_cm_48_1.mp4       LC 1 24000 2   6   1   no  no  yes no  
al_sbr_cm_48_2.mp4       LC 2 24000 2   6   2   no  yes yes yes 
al_sbr_e_48_1.mp4        LC 1 24000 2   6   1   no  no  yes yes 
al_sbr_e_48_2.mp4        LC 2 24000 2   6   2   no  yes yes yes 
al_sbr_gh_48_1.mp4       LC 1 24000 2   6   1   no  no  yes yes 
al_sbr_gh_48_2.mp4       LC 2 24000 2   6   2   no  yes yes yes 
al_sbr_i_48_1.mp4        LC 1 24000 2   6   1   no  no  yes yes 
al_sbr_i_48_1_new.mp4    LC 1 24000 2   6   1   no  no  yes no  
al_sbr_i_48_2.mp4        LC 2 24000 2   6   2   no  yes yes yes 
al_sbr_s_48_1.mp4        LC 1 24000 2   6   1   no  no  yes yes 
al_sbr_s_48_2.mp4        LC 2 24000 2   6   2   no  yes yes yes 
al_sbr_sig_48_2_sig0.mp4 LC 2 24000 2   6   2   no  yes yes yes 
al_sbr_sig_48_2_sig1.mp4 LC 2 24000 2   6   2   no  yes yes yes 
al_sbr_sig_48_2_sig2.mp4 LC 2 24000 2   6   2   no  yes yes yes 
al_sbr_twi_48_1.mp4      LC 1 24000 2   6   0   no  no  no  no  

AOT / SIdx / Chan_Cfg / DSE / DRC / IS / MS / TNS / Blockswitching
al04_48.mp4              LC 1 48000 2   3   0   yes no  no  no  yes yes Pulse
al05_48.mp4              LC 2 48000 2   3   0   yes no  yes yes no  no
al14_48.mp4              LC 2 48000 2   3   0   no  yes yes yes yes no
al17_48.mp4              LC 2 48000 2   3   0   no  no  no  no  no  no
al18_44.mp4              LC 1 44100 2   4   1   no  no  no  no  no  no  PNS
al19_48.mp4              LC 1 48000 2   3   1   no  no  no  no  no  no  PNS

am00_48.mp4              M  1 48000 1   3   0   no  no  no  no  no  yes
am01_48.mp4              M  1 48000 1   3   0   no  no  no  no  no  yes
am02_48.mp4              M  2 48000 1   3   0   no  no  yes yes yes yes
am04_48.mp4              M  2 48000 1   3   0   no  yes yes yes yes no

For al_sbr_<tool>_<samplerate>_<ch>.mp4, <tool> indicates the SBR module mainly targeted by the bitstream.
Possible values are:
    - "e" for testing  the  envelope  adjuster
    - "s"  for  testing  sine addition
    - "gh"  for  testing  time-grid  transitions  in  combination  with changes of SBR header data
    - "i" for testing  inverse  filtering
    - “cm”  for  testing  various  channelmodes,
    - “sig” for testing SBR signaling
    - “sr” for  testing  various  combinations of sampling rates.

This was found in a random internal MPEG document that was borderline totally impossible to find. Dumping output of the bitstream decoder in aacsbr.c seems to indicate that this is indeed more-or-less correct. Now if only ISO would actually update the info page on the conformance testvector download site (hahahahahaha it will never happen).