Machine Heart

Jul 20, 2026 · Artificial Intelligence

How China Telecom Achieved Clear WeChat Voice Calls at Just 0.266 kbps

The article analyzes China Telecom's AI Flow technology that compresses voice and video to record‑low bitrates—down to 0.266 kbps for clear calls—by replacing raw bitstreams with AI‑generated token streams, detailing the underlying theory, benchmark comparisons, and real‑world deployments across sky, air, ground, and sea scenarios.