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Structure

meetings/
├── bin/
│   ├── meeting-start        # starts recording + live transcription
│   ├── meeting-stop         # stops recording, asks for meeting name, renames files
│   ├── meeting-follow       # follow transcript while it is being written
│   └── summarize-meeting    # create post-meeting summaries
│
├── lib/
│   ├── paths.sh             # creates session dirs + defines file paths
│   └── whisper.sh           # whisper.cpp binary, model, ASR parameters
│
└── recordings/
    └── 2025-03-24_1930/     # session directory (created on meeting-start)
        ├── audio.wav        # raw system audio recording
        ├── transcript.txt  # live transcript (grows during meeting)
        ├── meta.env        # session metadata (PIDs, language, timestamps)
        ├── 2025-03-24T1930_project-sync_transcript.txt
        ├── 2025-03-24T1930_project-sync_audio.wav
        └── summary.md      # created by summarize-meeting

Description of Paths and Scripts

Paths

Path: meetings/bin/

  • Executable scripts. 

Path: meetings/lib/

  • Scripts to be used by the executable scripts. 

Path: meetings/recordings/

  • Subdirectories (ISO timestamp format) containing:
    • Audio files (to be deleted after the transcript has been written)
    • transcript.txt (renamed and timestamped after the meeting's end by the meeting-stop script)
    • meta.env (Meeting information)
      • PIDs
      • language used
      • the meeting's timestamps
    • summary.md (meeting summary in Markdown format)

Scripts (current architecture)

TranscriptOMatic is implemented as a small set of composable shell scripts. Each script has a clearly defined responsibility within the session lifecycle. No script relies on implicit system state or hard-coded audio devices.

Library scripts (meetings/lib/)

meetings/lib/paths.sh

Responsible for session creation and path management.

On invocation, it:

  • creates a new session directory
~/meetings/recordings/<ISO_TIMESTAMP>/

  • defines canonical file locations:

    • audio.wav

    • transcript.txt

    • meta.env

  • provides these paths to all other scripts

This script is the only place where session directories are created.

meetings/lib/whisper.sh

Defines the speech recognition backend configuration.

It contains:

  • the path to the local whisper.cpp installation

  • model selection (language-specific vs. multilingual)

  • streaming parameters

  • threading configuration suitable for a Raspberry Pi–class system

The setup is explicitly optimized for live transcription using whisper-stream, not for batch processing.

No audio devices are referenced here.

Executable scripts (meetings/bin/)

meeting-start

Starts a new live transcription session.

Responsibilities

  1. Session initialization
    • creates a new session directory via paths.sh
    • writes the active session path to ~/meetings/recordings/.current

  2. Audio graph setup (PipeWire)

    • ensures a persistent null sink (discord_sink)

    • routes Discord audio into that sink

    • exposes the sink monitor as a virtual microphone (whisper_mic)

     

     

 

 

 

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