FA-49593 / PCM sample encoding / Member archive

Pcm error feedback quantizer: feedback sign · case 03

Quantization error is fed back with the opposite sign.

Member previewVariant 3 · 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, 0, 0, 0], 0]`	`[[0, 1, 0, 0], 0]`	Failed

MEMBER ARCHIVE

The complete case is available to members.

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

Member access is invitation-based. Sign in with your invited account to inspect the sources.