Verified75% confidenceFactTime unknown
Time to First Audio (TTFA) refers to the time elapsed from text input to the output of the first frame of playable audio, and is a core metric for measuring the response speed of streaming TTS systems.
3
Sources
75%
Confidence
Long-term
Relevance
9/12/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedStreaming TTS APIs can transmit audio chunks as soon as they are ready, allowing playback to begin upon arrival of the first bytes, thereby reducing perceived latency.78% similarUnverifiedThe industry typically uses Time to First Audio Chunk as the core metric for real-time TTS.72% similarUnverified端侧TTS需在用户说完后200-500ms内开始语音反馈才能保持对话流畅感，要求模型以流式方式逐帧生成音频70% similarUnverifiedWhen evaluating voice AI system performance, TTFB should be used as the primary SLA metric rather than average processing time.69% similarUnverifiedAcoustic model inference is the primary source of TTS latency.69% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/916893API
curl https://kongchang.com/api/v1/knowledge/claims/916893MCP
get_claim(id=916893)