Earphone Change Detection for Adaptive Audio Communication

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Solution Overview

Problem

During audio communications sessions, changes in the earphone configuration, such as removal or alteration of audio output settings, can disrupt the perception of stereo or spatialized audio for one user without being apparent to the other user, potentially leading to missed information.

Innovation Solution

An apparatus and method for detecting change events at a user's earphones, such as removal or alteration of audio settings, and signaling this event to the other user's device, modifying the audio content accordingly to maintain effective communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If stereo or spatialized audio content is transmitted during an audio communications session, then the audio quality and spatial perception for the first user is improved, but the system cannot adapt when the first user removes an earphone, leading to loss of information for the second user

Engineering Contradiction:
Improveaudio perception reliabilityVSAvoidinformation loss between users
Core Design Contradiction:
ReliabilityVSLoss of information

Solution Approach 1:

The system implements feedback by detecting change events (such as earphone removal) at the first user device and signaling this information to the second user device. This feedback loop allows the second user to be informed about changes in the first user's audio perception capability, enabling adaptive response to maintain communication effectiveness.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs preliminary action by detecting potential audio perception issues before they cause communication breakdown. The change event detection mechanism proactively identifies when a user removes an earphone or changes audio settings, allowing the system to adapt the audio content in advance rather than waiting for the problem to manifest.

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If the first user removes an earphone or changes audio settings, then the first user's comfort or operational need is satisfied, but the stereo or spatialized audio content can no longer be properly perceived

Engineering Contradiction:
Improveuser operational flexibilityVSAvoidaudio perception capability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The system applies dynamics by making the audio content adaptive and flexible based on real-time detection of user actions. When a change event is detected (such as earphone removal), the system dynamically modifies the transmitted audio content from stereo or spatialized format to monaural format, allowing the audio perception capability to adapt to the current operational state of the user's device.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If audio content is modified in real-time based on detected change events, then the adaptability of the audio system is improved, but the complexity of the audio processing system increases

Engineering Contradiction:
Improveaudio content adaptabilityVSAvoidaudio processing complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system extracts and handles only the essential change events (such as earphone removal or muting actions) separately from the main audio stream. By detecting specific change events and signaling only these critical modifications to the other user device, the system achieves adaptability without requiring complex real-time processing of the entire audio content, thus managing system complexity effectively.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentEP4145862B1Signalling change events at an audio output device
Publication Date: 2025.09.24 NOKIA TECHNOLOGIES OY
  • EP4145862B1 patent drawingFigure 1A~1B
  • EP4145862B1 patent drawingFigure 2~4
  • EP4145862B1 patent drawingFigure 5A~5B

AI summary

An apparatus, method and computer program for signaling change events at an audio output device are disclosed. The apparatus may comprise means for detecting, during an audio communications session between a first user device and a second user device, a change event at a first earphones device associated with the first user device, the first earphones device comprised of first and second earphones. The apparatus may also comprise means for signaling the detected change event to the second user device and/or a second audio output device associated with the second user device.