def l3.ok
import emerging-ezaudio@0.4.0.0/src/mp3.bend as Mp3import Base
152def l3.ok(+xs: List<&2, U32>) -> Bool:
153 l3.and(
154 hdr.sync(xs) && U32.is_eq(hdr.mpeg1(xs), 1) && U32.is_eq(hdr.layer(xs), 1),
155 U32.is_ne(hdr.kbps(xs), 0) && U32.is_ne(hdr.hz(xs), 0))