FA-49138 / PCM sample encoding / Member archive
Pcm byteplane restore: signed conversion · case 03
Negative plane-assembled words use half the complement modulus.
Case contract
Reassemble signed integer PCM from per-byte-significance planes, preserving sample order and the declared number of octets per sample.
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, 32767, 0] | [1, -1, -32768] | Failed |
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