FA-49600 / PCM sample encoding / Member archive

Pcm error feedback quantizer: residue domain · case 05

Feedback excludes accumulated prior quantization error.

Member previewVariant 5 · 3 implementations · 8 checks per implementation

Case contract

Integer PCM precision reducer with first-order error feedback, even positive step, ties toward positive infinity, explicit reset positions and returned error state.

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, 1, 0, 1], -3]`	`[[0, 1, 0, 0], 0]`	Failed

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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

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