Playback Proximity Control for Hands-Free Audio Adjustment

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Solution Overview

Problem

Existing audio playback systems lack intuitive and efficient methods for modifying audio output, such as pausing or muting alarms, without requiring physical interaction, especially when users are in a groggy state.

Innovation Solution

Implementing proximity sensors on playback devices to detect hand movements, allowing users to modify audio output, including pausing, muting, or reducing volume, without physical contact, and enabling intelligent source-specific adjustments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If physical contact is required to control audio playback, then control reliability is improved, but ease of operation deteriorates when users are groggy or unable to reach the device

Engineering Contradiction:

Improveease of operationVSAvoidcontrol reliability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent replaces mechanical contact-based control with optical sensing. The optical sensor detects hand movements and gestures without requiring physical contact, allowing users to control audio playback even when groggy or unable to reach the device, while maintaining reliable control through detectable gesture patterns

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If proximity sensors are added to playback devices, then ease of operation is improved, but device complexity increases

Engineering Contradiction:

Improveease of operationVSAvoiddevice complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The optical sensor serves multiple functions: detecting hand presence, recognizing gesture patterns, and triggering appropriate audio control actions. This multi-functionality justifies the added component by providing comprehensive contactless control capabilities through a single sensor integration

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Ease of operation

If contactless control is implemented, then ease of operation is improved, but measurement precision of user intent deteriorates

Engineering Contradiction:

Improveease of operationVSAvoidmeasurement precision

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The system uses feedback by analyzing the duration, amplitude, and pattern of detected hand movements to distinguish between different user intents. Different gesture patterns trigger different audio control actions, allowing the system to accurately determine user intent without physical contact

Inventive Principle:

Principle #23Feedback

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables seamless and user-friendly audio control through proximity detection, enhancing user experience by allowing hands-free operation of playback devices, particularly during alarm snoozing and other audio modifications.

Implementation Method 1

Implementing proximity sensors on playback devices to detect hand movements

Methodology Applied

Scientific EffectProximity detection:

Data Source

PatentUS20260003565A1Control Based On Proximity

Publication Date: 2026.01.01 SONOS INC

AI summary

Embodiments described herein provide for detecting presence of an object in proximity to a playback device and responsively performing one or more operations. In an example implementation, a playback device detects, via a proximity detector of the playback device, presence of an object in proximity to the playback device. In response to detecting the presence of the object, the playback device performs one or more operations.