FA-49309 / PCM sample encoding / Member archive
Pcm mid side unlifting: left recovery · case 04
Left amplitude subtracts the recovered base channel.
Case contract
Invert the stipulated reversible PCM midpoint/side code, rejecting parity-mismatched triples and preserving L,R destination order.
Why this case matters
Offline PCM interchange uses these exact bounded packet and sample representation decisions.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| oracle 1 | [[1, 2], [-8, 5]] | [[5, 2], [2, 5]] | Failed |
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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.
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