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CodeSignal

Real-Time Audio Transcription with Web Audio API

via CodeSignal

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Overview

Discover how to build real-time browser-based transcription tools with the Web Audio API and Whisper. You’ll capture microphone input, process it in chunks, and use Whisper’s advanced features for segment timing, contextual cues, and multilingual transcription.

Syllabus

  • Unit 1: Streaming Microphone Input with the Web Audio API
    • Observe the Microphone Input Stream
    • Implement the backend Recordings route
    • Implement the transcribe route and transcriber service
    • Master the Start Recording functionality
    • Master the Stop Recording and Transcribe functionality
  • Unit 2: Setting Up a Pseudo-Realtime Transcription System Using Audio Chunking
    • Observe the simulated live user microphone input capture
    • Fix the partially broken implementation of the real-time transcription logic
    • Implement the real-time transcription
  • Unit 3: Advanced Transcription Features: Segments, Prompts, and Multilingual Support
    • Transcribe Audio with Segments, Prompt, and Language Options Using Whisper API
    • Add Language Selection and Prompt Support
    • Implement Whisper Segments and Prompt + Language Support
    • Implement Frontend for Advanced Transcription Features

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