One-Way Audio Is Usually a Directional Problem

The bench evidence for One-Way Audio Is Usually a Directional Problem forced a narrower explanation than the original assumption. LOUP testing treated one-way audio as two separate paths rather than one failed call.

For each direction I check SDP address and port, packet arrival, decoder activity, sample production, I2S output or microphone capture, encoder output and packet transmission. This prevents changing both endpoints when the failure is on only one half of the path.

Verification included both the happy path and the failure path because a feature that works once is not yet a production contract. Evidence marker: one-way-audio.

Bidirectional media should be debugged as two unidirectional pipelines with a shared signalling session. For a voice product, that kind of boundary discipline matters because audio, signalling and hardware symptoms often look deceptively similar.

Project evidence

LOUP engineering marker: one-way-audio. This note records the design or debugging lesson without publishing device credentials, private keys, customer data or manufacturing secrets.