• Timothy B. Terriberry's avatar
    Add coarse energy entropy model tuning. · ef2e6505
    Timothy B. Terriberry authored
    This tunes the entropy model for coarse energy introduced in commit
     c1c40a76.
    It uses a constant set of parameters, tuned from about an hour and a
     half of randomly selected test data encoded for each frame size,
     prediction type (inter/intra), and band number.
    These will be slightly sub-optimal for different frame sizes, but
     should be better than what we were using.
    
    For inter, this saves an average of 2.8, 5.2, 7.1, and 6.7 bits/frame
     for frame sizes of 120, 240, 480, and 960, respectively.
    For intra, this saves an average of 1.5, 3.0, 4.5, and 5.3 bits/frame
     (for the same frame sizes, respectively).
    ef2e6505
quant_bands.h 3.17 KB