Unverified50% confidenceFactExact time
STT、LLM、TTS三段串行叠加，仅处理延迟就超过650毫秒，不包括服务间网络跳转耗时
1
Sources
50%
Confidence
Long-term
Relevance
7/22/2026
First Seen
Sources
Related Claims
UnverifiedThe cumulative latency of a traditional ASR→LLM→TTS three-stage pipeline is typically between 800 milliseconds and 2 seconds.79% similarUnverified三明治架构相比原生Speech-to-Speech多了两次转换环节，STT环节通常增加100-300毫秒，TTS环节增加100-200毫秒78% similarUnverified业界领先的STT实时转录延迟约在200-400毫秒，采用Whisper或DeepSpeech等模型76% similarUnverified主流TTS方案如ElevenLabs、Azure Neural Voice和Google WaveNet的首字节延迟约为150-300毫秒75% similarUnverifiedThe time-to-first-byte for cloud TTS services is typically 200–500 milliseconds, making it the primary source of latency bottlenecks.74% similar
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