trentmkelly/police-scanner-audio

Police Scanner Audio Dataset

A comprehensive collection of police and emergency services radio communications from multiple US cities, captured from publicly available scanner feeds.

Dataset Overview

This dataset contains 103,660 audio recordings totaling 357GB of police scanner audio from 6 different cities across the United States. The recordings span multiple months of continuous monitoring and represent real-world emergency services communications.

Scanner Feeds

Dataset Statistics

• —Total Files: 103,660 MP3 audio files
• —Total Size: 357 GB
• —Duration: ~30 minutes per file, total duration 50,416 hours
• —Format: MP3 audio
• —Coverage: Multiple months of continuous recording
• —Feeds: 6 different emergency service frequencies

File Structure

/
├── feed_5725/           # Des Moines Police Dispatch 1
├── feed_11446/          # Cleveland Police and Metro Housing Authority  
├── feed_13671/          # Detroit Police Dispatch
├── feed_15908/          # Topeka Police Dispatch - East and West
├── feed_32602/          # Indianapolis Metropolitan Police
└── feed_41622/          # Amherst and Tonawanda Police and Fire Departments

Each feed directory contains:

feed_XXXXX/
├── 2024-08-14/         # Daily folders
├── 2024-08-15/
├── ...
└── completed_dates.txt # Tracking file for processed dates

File Naming Convention

Audio files follow the pattern:

{feed_id}-{unix_timestamp}_{start_time}-{end_time}.mp3

Example: 11446-1723613053_0124-0154.mp3

• —Feed ID: 11446 (Cleveland Police)
• —Unix timestamp: 1723613053
• —Time range: 01:24 to 01:54 (~30-minute segments)

Technical Specifications

• —Audio Format: MP3
• —Segment Length: ~30 minutes each
• —Source: Вrоаdcastify streams

Data Quality Notes

• —Audio quality varies based on radio conditions and distance from transmitters
• —Some files may contain prolonged periods of silence or static
• —Communications may include coded language specific to each department

License

This dataset is released under Creative Commons Attribution 3.0 United States License.