Arbitrator Module¶

Overview¶

The Arbitrator module has interfaces to manage multiple agents (aka voice assistants like Alexa, Siri, etc) and their dialog states. This module is responsible for determining if an agent’s request for dialog is granted or denied, and if an active agent’s dialog can be interrupted. This arbitration between agents is done based on rules configured both at the system level, and when registering the agent with the Arbitrator.

The Arbitrator interface provides messages to * Register agents - both Alexa and external 3rd Party * Allow registered agents to request dialog to become the active agent * Allow registered agents to update their dialog state * Enforce wakeword interruption (barge-in) rules * Enforce gesture interruption for immediate agent invocation (Push-To-Talk/Tap-To-Talk) rules

Configuration the Arbitrator Module¶

The following changes are added in config.json for the Arbitrator module to specify system-level wake word barge-in settings across all agents.

"aace.arbitrator": {
    "Arbitrator": {
        "WakewordInterruption": "ACTIVE_AGENT_ONLY" 
        "GestureInterruption": "ANY_AGENT" 
        }
}

For WakewordInterruption

ACTIVE_AGENT_ONLY: Barge-in via only the speaking agent's wake word,
ANY_AGENT: Barge-in via any agent's wake word

This setting depends on the 3rd Party VA platform - (For example the OEM can set this value to ACTIVE_AGENT_ONLY to satisfy CarPlay Enahnced Siri Requrement")

For GestureInterruption

For example "Button Down" in ESR.

ACTIVE_AGENT_ONLY: Interruption via only the active agent's PTT/TTT,
ANY_AGENT: Interruption via any agent's PTT/TTT

This setting depends on the 3rd Party VA platform - (For example the OEM can set this value to AGENT_ONLY to satisfy CarPlay Enahnced Siri Requrement")

NOTE: If no configuration is provided for this module at Engine start, the default values for both the settings are ACTIVE_AGENT_ONLY