This event indicates that the server has detected the end of the user's speech utterance and expects no additional speech.

No event specified.

Not specified.

[`FLAC`](https://xiph.org/flac/documentation.html) (Free Lossless Audio Codec) is the recommended encoding because it is lossless--therefore recognition is not compromised--and requires only about half the bandwidth of `LINEAR16`.

Uncompressed 16-bit signed little-endian samples (Linear PCM).

Not specified.

Uncompressed 16-bit signed little-endian samples (Linear PCM).

MP3 audio encoding.

Opus-encoded audio wrapped in an ogg container.

The service is not expecting a follow-on question from the user.

The service is expecting a follow-on question from the user.

No mode specified.

Specifies how to process the `AssistRequest` messages.

The top-level message sent by the client.

The top-level message received by the client.

Specifies how to process the `audio_in` data that will be provided in subsequent requests.

The audio containing the Assistant's response to the query.

Specifies the desired format for the server to use when it returns `audio_out` messages.

The response returned to the device if the user has triggered a Device Action.

*Required* Fields that identify the device to the Assistant.

There are three sources of locations.

Provides information about the current dialog state.

The dialog state resulting from the user's query.

The estimated transcription of a phrase the user has spoken.

Indicates the type of event.

Audio encoding of the data sent in the audio message.

Audio encoding of the data returned in the audio message.

Possible states of the microphone after a `Assist` RPC completes.