Check SIP trunk audio is 16kHz before feeding voice models

A Google staffer warns that many SIP trunk providers only supply 8kHz audio, which silently degrades voice model performance even after upsampling; gpt-live-1 was specifically tuned for 8kHz scenarios.

2026-11-13 ~ 2026-11-13 · 3 related posts

• Voice model tip: make sure your SIP trunk delivers 16kHz audio, not upsampled 8kHz — pbbakkum · 2026-11-13
• Ex-OpenAI engineer: telephony vendors' 8kHz audio silently degrades voice models — pbbakkum · 2026-11-13

1 near-duplicate retellings: pbbakkum