Action Required

01-10-26

Scanner Transcribe

Real-time browser-based transcription for any audio source. Works with police scanners, radio streams, podcasts, or any browser tab playing audio.

Features

• Dual Transcription Engines

  • Whisper AI - Free, runs locally in browser (~150MB model)

  • Deepgram - Optimized for radio/phone audio ($200 free credit)

• Any Audio Source - Works with any Broadcastify feed or browser tab

• Keyword Alerts - Highlight and get audio alerts on specific words

• Tab Audio Capture - Capture audio directly from any browser tab

• Audio Visualizer - Real-time frequency visualization

• Usage Tracking - Monitor transcription time and estimated cost (Deepgram)

• Multi-Format Export - Download transcripts as TXT, JSON, or CSV

• Settings Persistence - Saves feed ID, API key, and keywords locally

How to Use

1. Audio Source

• Enter a Broadcastify feed ID and click “Open Feed”, or open any audio source in another tab

• Click “Capture Tab Audio” and select the tab (check “Share tab audio”)

2. Transcription Setup

• Choose your engine:

  • Whisper: Click “Load Model” (one-time ~150MB download)

  • Deepgram: Enter your API key (get $200 free credit)

• (Optional) Enter keywords to highlight in transcripts

3. Live Transcript

• Click “Start” to begin transcription

• Download transcripts as TXT, JSON, or CSV

Live Demo

Visit: https://arandomguyhere.github.io/ScannerTranscribe/

Finding Feeds

• Broadcastify: Browse feeds at https://www.broadcastify.com/listen/

• Any Audio: Works with podcasts, YouTube, Twitch, or any tab playing audio

Keyword Alerts

Enter comma-separated keywords to highlight important entries:

• Example: shooting, fire, robbery, ambulance

• Matching entries are highlighted in red

• Audio beep plays when keyword detected

Requirements

• Browser: Chrome or Edge (required for tab audio capture)

• Internet: Required for audio streams and Deepgram

• Storage: ~150MB for Whisper model (cached in browser)

Transcription Engines

EngineAccuracyCostProcessingWhisper AIGoodFreeLocal (browser)DeepgramExcellent~$0.0043/minCloud API

Deepgram uses the nova-2-phonecall model, optimized for radio and phone audio quality.

Export Formats

• TXT - Human-readable with timestamps and keywords

• JSON - Structured data including metadata and keyword list

• CSV - Spreadsheet-compatible format

Technical Details

• Audio Capture: getDisplayMedia() API for tab audio

• Whisper: whisper-base.en model via Transformers.js

• Deepgram: WebSocket streaming with utterance grouping

• Storage: localStorage for settings persistence

Privacy

• Whisper: All processing happens locally in your browser

• Deepgram: Audio is sent to Deepgram’s servers for processing

• No tracking: No analytics or third-party tracking

Disclaimer

For informational purposes only. Not for emergency use.