Directed Audio System for Operator Privacy and Stream Customization

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Solution Overview

Problem

In open plan workplaces and shared environments, individuals often face distractions due to audible sounds, leading to increased noise levels and stress, as existing audio systems lack directivity and fail to effectively manage operator privacy and audio stream customization.

Innovation Solution

A directed audio system utilizing transducer arrays, position tracking sensors, and visual privacy status displays to direct audio output specifically to operators, while minimizing distractions to others and allowing for customizable audio streams based on individual preferences and privacy settings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If audio systems are made non-directional to ensure audio output is heard by all operators, then audio coverage is improved, but audio privacy and distraction reduction deteriorate

Engineering Contradiction:
Improveaudio coverageVSAvoidaudio distraction
Core Design Contradiction:
Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The audio output is segmented into multiple independent channels corresponding to different spatial directions. Each channel can be independently controlled to deliver audio to specific operators while preventing audio leakage to other directions, thus achieving both coverage and privacy

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different spatial regions are assigned different audio qualities - audio is delivered with high fidelity to designated operator locations while being attenuated or blocked in other directions. This creates local audio zones that provide privacy and reduce distractions for each operator

Inventive Principle:
Principle #3Local quality

2Object-affected harmful factors

If audio systems are made directional to protect operator privacy and reduce distractions, then audio privacy is improved, but audio coverage and ease of communication deteriorate

Engineering Contradiction:
Improveaudio privacyVSAvoidaudio communication
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The audio system dynamically adjusts directional characteristics based on real-time detection of operator presence and interaction states. When operators are detected, the system switches to directional mode for privacy protection; when no operators are present or communication is needed, the system transitions to non-directional mode for ease of communication

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The audio system performs multiple functions by switching between directional and non-directional modes, and by providing both audio delivery and privacy protection. This multi-functionality allows the system to adapt to different operational requirements without needing separate systems

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Device complexity

If existing audio systems are used in open plan workplaces, then device simplicity is maintained, but noise levels and stress increase due to lack of directivity

Engineering Contradiction:
Improveaudio system complexityVSAvoidoperator stress
Core Design Contradiction:
Device complexityVSStress or pressure

Solution Approach 1:

The audio system automatically detects operator presence and adjusts audio delivery without manual intervention. The system self-regulates noise levels and directional characteristics based on environmental conditions, reducing operator stress while maintaining manageable system complexity through automation

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS11082771B2Directed audio system for audio privacy and audio stream customization
Publication Date: 2021.08.03 STEELCASE INC
  • US11082771B2 patent drawing
  • US11082771B2 patent drawing
  • US11082771B2 patent drawing

AI summary

A system includes an audio transducer. The audio output of the transducer may be directed at an operator. The directionality of the audio output may ensure privacy in audio delivery. Further, the directionality of the audio output may reduce the potential for other nearby individuals to be disturbed by the audio output. A directed audio system may control the content of the audio output. The content of the audio output may be configured for applications in individual operator workspaces, multiple-operator common spaces, shared-use spaces or a combination thereof. The directed audio system may customize the audio output in accord with a stored audio profile for the operator.