FA-10942 / Audio channel mixing / Member archive
Route channel matrix · case 02
Multiplying row sums mixes each sample through unrelated gains.
Case contract
Matrix rows are output channels and columns are input channels. Multiply one sample frame by the row-oriented routing matrix.
Why this case matters
A pure Python local audio pipeline stage with explicit sample formats and frame conventions; no real-time device or signal-spectrum claims.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| fixture 1 | [3, 3.0] | [1, 1.5] | Failed |
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