Open-Source Audio Annotation Platform: A Transcription Workflow Solution Integrating Label Studio and ASR

audio-annotation-platform is an open-source audio transcription tool that connects Label Studio's annotation capabilities with ASR agents via FastAPI middleware. It addresses the pain points of low efficiency and high error rates caused by switching between multiple tools in traditional audio transcription workflows, helping users efficiently manage transcription tasks and create high-quality audio datasets. It is suitable for various scenarios such as speech recognition training and meeting minutes.

In fields like speech recognition and natural language processing, high-quality annotated data is the foundation of model training. However, traditional audio transcription workflows require manual switching between multiple tools, leading to low efficiency and high error rates. audio-annotation-platform was created to address this pain point, providing an integrated transcription workflow.

The platform's core features include:

1. User-friendly interface design, allowing non-technical users to get started quickly;
2. FastAPI backend supports asynchronous concurrency, suitable for team collaboration;
3. Deep integration with Label Studio, supporting annotation features like timeline marking and speaker separation;
4. Supports multiple audio formats such as MP3/WAV/FLAC/OGG;
5. Complete transcription workflow: Batch upload → ASR pre-transcription → Manual proofreading → Quality check → Export in formats like JSON/CSV.

The platform adopts a modular design:

• Frontend layer: Built with modern web technologies, responsive design, deep integration with Label Studio;
• Middleware layer: FastAPI provides RESTful APIs to handle audio uploads, preprocessing, and ASR agent calls;
• Backend services: Configurable ASR agents, data storage, and user permission control;
• Data layer: Supports multiple databases, version control of annotated data, and backup/restore mechanisms.

The platform is suitable for various scenarios:

1. Speech recognition model training: Provides high-quality data with timestamp alignment and speaker annotation;
2. Meeting minutes organization: ASR pre-transcription reduces manual workload;
3. Multimedia content analysis: Create subtitles and analyze podcast information;
4. Academic research: Linguistic corpus construction and speech feature analysis;
5. Customer service quality monitoring: Transcribe calls for evaluation, training, or compliance review.

System Requirements: Windows/macOS/Linux OS, at least 4GB RAM, minimum 200MB free disk space, network support. Installation: Download the installation package for your system from GitHub Releases (Windows.exe, macOS.dmg, Linux.zip/deb), and install following the prompts. Usage Flow: Launch the application → Upload audio → Annotate → Export results in JSON/CSV format.

The platform uses the MIT license, allowing free use, modification, and commercial use. Support Channels: Repository documentation, community forums, GitHub Issues feedback. Contribution Methods: Code PRs, documentation improvements, issue reports, experience sharing. Future Plans: Add multilingual support, real-time collaboration, and more intelligent ASR integration; rely on community contributions to drive development.