--- title: Real-Time Audio Transcription API: How to Turn Speech to Te… description: Real-time audio transcription in multi-person video calls is technically challenging due to latency, audio quality, speaker diarization, and scaling concerns.... canonical: https://daily.dev/posts/real-time-audio-transcription-api-how-to-turn-speech-to-te--nkvlolkek twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Real-Time Audio Transcription API: How to Turn Speech to Te… | daily.dev og:description: Real-time audio transcription in multi-person video calls is technically challenging due to latency, audio quality, speaker diarization, and scaling concerns.... og:url: https://daily.dev/posts/real-time-audio-transcription-api-how-to-turn-speech-to-te--nkvlolkek og:image: https://api.daily.dev/og/posts/NkVLolKEK.png og:image:alt: Real-Time Audio Transcription API: How to Turn Speech to Te… og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Real-Time Audio Transcription API: How to Turn Speech to Te… **[Software Mansion](https://daily.dev/sources/swmansion)** · 10 min read · 0 upvotes · 0 comments ## Summary Real-time audio transcription in multi-person video calls is technically challenging due to latency, audio quality, speaker diarization, and scaling concerns. The browser-based Web Speech API is too limited for production use. A better approach uses a server-side SFU to capture per-participant PCM audio streams and pipe them to a streaming ASR service (e.g., Google Gemini Live, Deepgram), which naturally solves speaker identification. Fishjam, a WebRTC SFU platform, is introduced as a solution that handles audio capture, decoding, and forwarding in 16-bit PCM at 16 kHz, letting developers plug in their preferred ASR service with minimal infrastructure work. Code examples using Fishjam's Node.js SDK with Google GenAI are provided. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [How to build a real time voice AI agent in the browser](https://daily.dev/posts/how-to-build-a-real-time-voice-ai-agent-in-the-browser-649co561i) · LogRocket · 3 upvotes · 0 comments - [How to Build a Voice-Powered AI Application with the Web Speech API](https://daily.dev/posts/how-to-build-a-voice-powered-ai-application-with-the-web-speech-api-yfegf9dex) · freeCodeCamp · 3 upvotes · 0 comments --- Tags: [#speech-recognition](https://daily.dev/tags/speech-recognition), [#webrtc](https://daily.dev/tags/webrtc) [View this post on daily.dev](https://daily.dev/posts/real-time-audio-transcription-api-how-to-turn-speech-to-te--nkvlolkek) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Real-Time Audio Transcription API: How to Turn Speech to Te…","url":"https://daily.dev/posts/real-time-audio-transcription-api-how-to-turn-speech-to-te--nkvlolkek","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/real-time-audio-transcription-api-how-to-turn-speech-to-te--nkvlolkek"},"datePublished":"2026-08-02T07:15:37.181Z","dateModified":"2026-08-02T07:40:43.542Z","description":"Real-time audio transcription in multi-person video calls is technically challenging due to latency, audio quality, speaker diarization, and scaling concerns....","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/b1fb00ba540bed9127b905be3648e6a0?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/b1fb00ba540bed9127b905be3648e6a0?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Software Mansion","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Software Mansion","logo":"https://media.daily.dev/image/upload/s--sOx0vaVZ--/f_auto,q_auto/v1785654908/logos/swmansion?_a=BAMAMicg0","url":"https://daily.dev/sources/swmansion"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/real-time-audio-transcription-api-how-to-turn-speech-to-te--nkvlolkek","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"speech-recognition,webrtc","timeRequired":"PT10M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Software Mansion","item":"https://daily.dev/sources/swmansion"},{"@type":"ListItem","position":3,"name":"Real-Time Audio Transcription API: How to Turn Speech to Te…"}]} ```