raspOVOS

Change the voice or STT

OVOS configuration lives in ~/.config/mycroft/mycroft.conf (user overrides) layered over /etc/mycroft/mycroft.conf (image defaults). Edit as the ovos user; services pick up changes on restart.

Change the TTS voice

nano ~/.config/mycroft/mycroft.conf

{
  "tts": {
    "module": "ovos-tts-plugin-piper",
    "ovos-tts-plugin-piper": {
      "voice": "alan-low"
    }
  }
}

Restart audio: systemctl --user restart ovos-audio. List installed TTS plugins with ls-tts.

Change STT

{
  "stt": {
    "module": "ovos-stt-plugin-fasterwhisper",
    "ovos-stt-plugin-fasterwhisper": {
      "model": "small"
    }
  }
}

Restart the listener: systemctl --user restart ovos-listener. List installed STT plugins with ls-stt. Bigger models are more accurate and slower — on a Pi 4 stay at small or below.

Use your own STT/TTS server

Any variant can point at a self-hosted server instead of the public ones:

{
  "stt": {"module": "ovos-stt-plugin-server",
          "ovos-stt-plugin-server": {"url": "http://myserver:8080/stt"}},
  "tts": {"module": "ovos-tts-plugin-server",
          "ovos-tts-plugin-server": {"host": "http://myserver:9666"}}
}

Validate your config

A stray comma breaks JSON. Check before restarting:

~/.venvs/ovos/bin/python -m json.tool ~/.config/mycroft/mycroft.conf

Next steps

• Troubleshoot audio if the voice changed but nothing plays.
• Image variants & languages for the plugin defaults per language.

This site is open source. Improve this page.