Multi-Zone Audio Volume Memory for Dynamic Group Playback

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Solution Overview

Problem

Existing media playback systems face challenges in managing volume levels effectively across multiple zone players, particularly when grouping and ungrouping them, leading to inconsistent audio experiences.

Innovation Solution

Implementing a system that intelligently applies volume settings by storing and restoring individual zone player volume levels when grouped or ungrouped, using a centralized controller or memory to ensure seamless audio playback across synchronized zones.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If zone players are grouped and ungrouped dynamically, then system adaptability is improved, but volume level consistency deteriorates

Engineering Contradiction:

Improvedynamic grouping capabilityVSAvoidvolume level consistency

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The system stores the original volume level of each zone player before it is grouped with other players. When a zone player is removed from a group, the system automatically restores its volume level to the stored pre-grouping value, ensuring volume consistency across dynamic grouping operations.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system continuously monitors the grouping state of zone players and automatically adjusts volume levels based on grouping changes. When grouping status changes, the system detects this and triggers appropriate volume level adjustments to maintain consistency.

Inventive Principle:

Principle #23Feedback

2Ease of operation

If individual zone player volume levels are independently controlled, then ease of operation is improved, but system complexity increases

Engineering Contradiction:

Improveindividual volume controlVSAvoidvolume management system

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

Each zone player stores its own original volume level locally. When a zone player is ungrouped, it automatically restores its volume level using the stored value without requiring manual intervention or complex centralized control, simplifying the overall system architecture.

Inventive Principle:

Principle #25Self-service

3Reliability

If volume levels are restored after ungrouping, then audio experience consistency is improved, but loss of time occurs during volume adjustment

Engineering Contradiction:

Improveaudio experience consistencyVSAvoidvolume adjustment time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system pre-stores volume levels before grouping operations, so that when ungrouping occurs, the restoration can happen immediately without requiring time-consuming measurements or user adjustments, minimizing audio interruption.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS10536777B2Volume management in a media playback system

Publication Date: 2020.01.14 SONOS INC

AI summary

Embodiments are described herein that provide numerous volume enhancements to a media playback system. An example implementation involves a playback device playing audio content at a first volume level as part of a first audio playback group configuration, storing a first volume level in association with the first audio playback group configuration, joining a second audio playback group configuration, playing audio content at a second volume level as a part of the second audio playback group configuration, receiving a command to play audio content as part of the first audio playback group configuration, identifying the first volume level in the data storage; and playing audio content at the first volume level as part of the first audio playback group configuration.