typedef struct {
    char joint_stereo, delta, terms [MAX_NTERMS+1];
} WavpackDecorrSpec;


static WavpackDecorrSpec fast_specs [] = {
	{ 1, 2,18,17 },	 // 0
	{ 1, 1,17,17 },	 // 1
	{ 0, 2,18,17 },	 // 2
......