esphome-docs/components/voice_assistant.rst

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Voice Assistant
===============
.. seo::
:description: Instructions for setting up a Voice Assistant in ESPHome.
:image: voice-assistant.svg
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ESPHome devices with a microphone are able to stream the audio to Home Assistant and be processed there by `assist <https://www.home-assistant.io/voice_control/>`__.
.. note::
Voice Assistant requires Home Assistant 2023.5 or later.
.. warning::
Audio and voice components consume a significant amount of resources (RAM, CPU) on the device.
**Crashes are likely to occur** if you include too many additional components in your device's
configuration. In particular, Bluetooth/BLE components are known to cause issues when used in
combination with Voice Assistant and/or other audio components.
Configuration:
--------------
.. code-block:: yaml
microphone:
- platform: ...
id: mic_id
voice_assistant:
microphone: mic_id
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- **microphone** (**Required**, :ref:`config-id`): The :doc:`microphone </components/microphone/index>` to use for input.
- **speaker** (*Optional*, :ref:`config-id`): The :doc:`speaker </components/speaker/index>` to use to output the response.
Cannot be used with ``media_player`` below.
- **media_player** (*Optional*, :ref:`config-id`): The :doc:`media_player </components/media_player/index>` to use
to output the response. Cannot be used with ``speaker`` above.
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- **use_wake_word** (*Optional*, boolean): Enable wake word on the assist pipeline. Defaults to ``false``.
- **on_intent_start** (*Optional*, :ref:`Automation <automation>`): An automation to perform when intent processing starts.
- **on_intent_end** (*Optional*, :ref:`Automation <automation>`): An automation to perform when intent processing ends.
- **on_listening** (*Optional*, :ref:`Automation <automation>`): An automation to
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perform when the voice assistant microphone starts listening.
- **on_start** (*Optional*, :ref:`Automation <automation>`): An automation to
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perform when the assist pipeline is started.
- **on_wake_word_detected** (*Optional*, :ref:`Automation <automation>`): An automation
to perform when the assist pipeline has detected a wake word.
- **on_end** (*Optional*, :ref:`Automation <automation>`): An automation to perform
when the voice assistant is finished all tasks.
- **on_stt_end** (*Optional*, :ref:`Automation <automation>`): An automation to perform
when the voice assistant has finished speech-to-text. The resulting text is
available to automations as the variable ``x``.
- **on_stt_vad_start** (*Optional*, :ref:`Automation <automation>`): An automation to perform when voice activity
detection starts speech-to-text processing.
- **on_stt_vad_end** (*Optional*, :ref:`Automation <automation>`): An automation to perform when voice activity
detection ends speech-to-text processing.
- **on_tts_start** (*Optional*, :ref:`Automation <automation>`): An automation to perform
when the voice assistant has started text-to-speech. The text to be spoken is
available to automations as the variable ``x``.
- **on_tts_end** (*Optional*, :ref:`Automation <automation>`): An automation to perform
when the voice assistant has finished text-to-speech. A URL containing the audio response
is available to automations as the variable ``x``.
- **on_tts_stream_start** (*Optional*, :ref:`Automation <automation>`): An automation to perform when audio stream
(voice response) playback starts. Requires ``speaker`` to be configured.
- **on_tts_stream_end** (*Optional*, :ref:`Automation <automation>`): An automation to perform when audio stream
(voice response) playback ends. Requires ``speaker`` to be configured.
- **on_idle** (*Optional*, :ref:`Automation <automation>`): An automation to perform
when the voice assistant is idle (no other actions/states are in progress).
- **on_error** (*Optional*, :ref:`Automation <automation>`): An automation to perform
when the voice assistant has encountered an error. The error code and message are available to
automations as the variables ``code`` and ``message``.
- **on_client_connected** (*Optional*, :ref:`Automation <automation>`): An automation to perform
when Home Assistant has connected and is waiting for Voice Assistant commands.
- **on_client_disconnected** (*Optional*, :ref:`Automation <automation>`): An automation to perform
when Home Assistant disconnects from the Voice Assistant.
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- **noise_suppression_level** (*Optional*, integer): The noise suppression level to apply to the assist pipeline.
Between 0 and 4 inclusive. Defaults to 0 (disabled).
- **auto_gain** (*Optional*, dBFS): Auto gain level to apply to the assist pipeline.
Between 0dBFS and 31dBFS inclusive. Defaults to 0 (disabled).
- **volume_multiplier** (*Optional*, float): Volume multiplier to apply to the assist pipeline.
Must be larger than 0. Defaults to 1 (disabled).
.. _voice_assistant-actions:
Voice Assistant Actions
-----------------------
The following actions are available for use in automations:
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``voice_assistant.start``
^^^^^^^^^^^^^^^^^^^^^^^^^
Listens for one voice command then stops.
Configuration variables:
- **silence_detection** (*Optional*, boolean): Enable silence detection. Defaults to ``true``.
- **wake_word** (*Optional*, string): The wake word that was used to trigger the voice assistant
when using on-device wake word such as :doc:`/components/micro_wake_word`.
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Call ``voice_assistant.stop`` to signal the end of the voice command if ``silence_detection`` is set to ``false``.
``voice_assistant.start_continuous``
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Start listening for voice commands. This will start listening again after
the response audio has finished playing. Some errors will stop the cycle.
Call ``voice_assistant.stop`` to stop the cycle.
``voice_assistant.stop``
^^^^^^^^^^^^^^^^^^^^^^^^
Stop listening for voice commands.
Voice Assistant Conditions
--------------------------
The following conditions are available for use in automations:
- ``voice_assistant.is_running`` - Returns true if the voice assistant is currently running.
- ``voice_assistant.connected`` - Returns true if the voice assistant is currently connected to Home Assistant.
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Wake word detection
-------------------
See our `example YAML files on GitHub <https://github.com/esphome/firmware/blob/main/voice-assistant/m5stack-atom-echo.yaml>`__ for continuous wake word detection.
Push to Talk
------------
Here is an example offering Push to Talk with a :doc:`/components/binary_sensor/index`.
.. code-block:: yaml
voice_assistant:
microphone: ...
speaker: ...
binary_sensor:
- platform: gpio
pin: ...
on_press:
- voice_assistant.start:
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silence_detection: false
on_release:
- voice_assistant.stop:
Click to Converse
-----------------
.. code-block:: yaml
voice_assistant:
microphone: ...
speaker: ...
binary_sensor:
- platform: gpio
pin: ...
on_click:
- if:
condition: voice_assistant.is_running
then:
- voice_assistant.stop:
else:
- voice_assistant.start_continuous:
See Also
--------
- :doc:`microphone/index`
- :apiref:`voice_assistant/voice_assistant.h`
- :ghedit:`Edit`