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README.md

ADN DMR Peer Server

Clean Architecture rewrite of the ADN DMR conference bridge. Same behaviour as the original server; configuration is YAML.

License

GPL v3. Derived from FreeDMR / HBlink.

Requirements

Python 3.10+
Dependencies: pip install -r requirements.txt
ffmpeg (system package) — required for voice/TTS. Install via your distro:
- Debian/Ubuntu: apt install ffmpeg
- openSUSE: zypper install ffmpeg
- Fedora/RHEL: dnf install ffmpeg or yum install ffmpeg

Configuration

Copy adn-server.example.yaml to adn-server.yaml and edit with your settings. Production config is not committed.

Voice configuration

Voice features (announcements, TTS, recording) use a separate config file. Copy adn-voice.example.yaml to adn-voice.yaml and edit. If the file does not exist, voice features are disabled (no error). Changes are hot-reloaded every 15 seconds.

Each item (ANNOUNCEMENTS, TTS_ANNOUNCEMENTS) has its own LANGUAGE and ENABLED: true to activate.
ANNOUNCEMENT_LANGUAGES is optional (for voice ident only); announcements/TTS work without it.
TTS requires ffmpeg + vocoder (TTS_VOCODER_CMD or TTS_AMBESERVER_HOST). Pipeline: .txt → gTTS → .mp3 → ffmpeg → .wav → vocoder → .ambe. First time: create Audio/<LANG>/ondemand/<FILE>.txt with the text. See docs/TTS_SETUP.md.

Run

pip install -r requirements.txt
python adn-server.py

Options:

python adn-server.py -c /path/to/adn-server.yaml
python adn-server.py --logging DEBUG

Parrot (Playback)

A separate entrypoint records incoming group voice and plays it back (echo/parrot).

cp adn-parrot.example.yaml adn-parrot.yaml
python adn-parrot.py

See docs/PARROT.md for architecture, configuration and systemd setup.