Multiple Voice Service Routing for Unified Networked Device Control

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Solution Overview

Problem

Existing media playback systems lack the ability to seamlessly integrate multiple voice services for controlling networked devices, leading to limitations in user experience and functionality.

Innovation Solution

Networked microphone devices (NMDs) are configured to process voice inputs and select the appropriate voice service for command execution, using activation words or context to identify the intended service, and can handle multiple voice services simultaneously, providing a unified interface for voice control across devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single voice service is integrated into the media playback system, then the system complexity remains manageable, but the versatility and user experience are limited

Engineering Contradiction:

Improvevoice service integration capabilityVSAvoidsystem architecture complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system segments voice service handling by introducing a dedicated voice service manager component that separates voice service configuration and routing logic from individual playback devices. This allows multiple voice services to be managed independently through a centralized coordination mechanism, enabling versatile multi-service integration without proportionally increasing overall system complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The voice service manager implements a universal interface that can handle multiple different voice services through a common architecture. The system uses a standardized message passing protocol that works across different voice service providers, allowing the same infrastructure to support diverse voice services without requiring separate integration pathways for each service.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple voice services are integrated simultaneously, then user experience and functionality improve, but determining which service to activate becomes more complex

Engineering Contradiction:

Improvemultiple voice service supportVSAvoidservice selection simplicity

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The system performs preliminary configuration by allowing users to pre-select preferred voice services and configure default behaviors during system setup. The voice service manager stores these preferences and automatically applies them during operation, eliminating the need for users to make service selection decisions during actual voice command usage. This preliminary configuration approach simplifies runtime operation while maintaining multiple service capabilities.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback mechanisms where the voice service manager monitors which voice services are currently active and provides status information to playback devices. When a voice service is activated, the system provides feedback messages to relevant devices to coordinate their behavior accordingly. This feedback loop ensures that service selection and activation are transparent and coordinated, reducing operational complexity.

Inventive Principle:

Principle #23Feedback

3Measurement precision

If voice commands are routed to multiple voice services for processing, then service selection accuracy improves, but the response time and processing delay increase

Engineering Contradiction:

Improvevoice service identification accuracyVSAvoidvoice command processing delay

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The system implements a tiered processing approach where the voice service manager first performs a quick preliminary routing decision based on pre-configured preferences and context, activating only the most appropriate voice service for each command. This partial action approach avoids the excessive delay of querying multiple services while still achieving accurate service selection through intelligent pre-filtering and context-aware routing.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS20250322827A1Systems and Methods of Multiple Voice Services

Publication Date: 2025.10.16 SONOS INC

AI summary

Disclosed herein are example techniques to identify a voice service to process a voice input. An example implementation may involve a network microphone device (NMD) receiving, via a microphone, voice data indicating a voice input. The NMD may identify, from among multiple voice services registered to a media playback system, a voice service to process the voice input and cause, via a network interface, the identified voice service to process the voice input.