FA-49147 / PCM sample encoding / Member archive

Pcm slot status: parity status inclusion · case 02

Parity omits the invalid-status bit carried in the protected slot.

Member previewVariant 2 · 3 implementations · 8 checks per implementation

Case contract

Decode a stipulated slot: signed payload, one invalid bit, then even parity covering payload and invalid bit; invalid or corrupt samples return null plus status.

Why this case matters

Offline PCM interchange uses these exact bounded packet and sample representation decisions.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
oracle 1	`[[0, true, true], [null, true, false], [1, true, true], [null, false, true], [null, false, false]]`	`[[0, true, true], [null, true, false], [1, true, true], [null, false, false], [null, false, true]]`	Failed

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