Unverified60% confidenceFactExact time

Natural pauses in human conversation typically range from 200 to 500 milliseconds, and if TTS TTFB exceeds this threshold, users will noticeably perceive unnatural latency.

2

Sources

60%

Confidence

Medium-term (~90 days)

Relevance

7/2/2026

First Seen

Valid until: 9/30/2026

Sources

Multi-Model Unified Orchestration Framework: Runtime Dynamic Switching Across Eight AI Services in Practice

bilibili熊猫淘金6/6/2026

Related Claims

Verified业界公认的自然对话阈值为端到端延迟500毫秒以内，超过该阈值用户会明显感知到停顿80% similar Verified人类感知自然对话的延迟容忍阈值约为300毫秒79% similar UnverifiedChatGPT实时语音的输出延迟可压缩至300毫秒以内，达到人类对话的自然响应阈值74% similar Unverified数字人场景中WebRTC端到端延迟通常需要控制在500毫秒以内才能保证自然流畅的交互体验73% similar Verified人类对话中的自然轮换节奏约为200毫秒72% similar

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