def blk.arm
import emerging-ezaudio@0.4.0.0/src/mp3_syn.bend as Mp3Synimport Base
1426# open a block: preamble, then the four pairs
1427def blk.arm(got: Bg, +nch: U32, +tm: U32) -> Bg:
1428 match got:
1429 case Bg{st, gr, syn}:
1430 match st:
1431 case Sb{lin, pcm}:
1432 blk.arm2(blk.pre(lin, gr, nch, u.add(u.mul(tm, 64), 960), tm), pcm, syn, nch, tm)