Intelligent Mute Status Reminder for Active Speakers

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Solution Overview

Problem

Participants in calls often forget that their microphones are muted, leading to unnoticed voice activity that goes unheard by others, as existing technologies lack effective reminders for muted microphones during conversations.

Innovation Solution

Implementing intelligent mute status reminder functionality on communication endpoints, which capture sound samples, detect voice activity, and provide notifications when voice energy exceeds a baseline level, ensuring speakers are aware of their muted state.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a participant mutes their microphone during a call, then they can carry on a conversation outside the call without being heard, but they may forget that the microphone is muted and continue to speak, causing their voice to go unheard by other participants

Engineering Contradiction:

Improveease of mutingVSAvoidloss of voice activity

Core Design Contradiction:

Ease of operationVSLoss of information

Solution Approach 1:

The system provides automatic feedback to the participant by detecting voice activity through the microphone even when muted, and sending notifications to both the muted participant and other call participants. This feedback loop ensures that participants are aware when their microphone is muted, preventing the information loss where their speech goes unheard without their knowledge.

Inventive Principle:

Principle #23Feedback

2Device complexity

If no notification system is implemented, then the call system remains simple, but muted participants cannot realize their microphones are muted, leading to communication breakdown

Engineering Contradiction:

Improvecomplexity of call systemVSAvoidreliability of communication

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The system performs preliminary detection of voice activity before communication breakdown occurs. By continuously monitoring for voice signals and proactively sending notifications when speech is detected while muted, the system prevents the reliability issue of unnoticed communication failures rather than reacting after the problem occurs.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If automatic detection and notification is implemented, then participants are reliably notified when muted, but the system complexity increases with additional detection and notification mechanisms

Engineering Contradiction:

Improvereliability of mute status awarenessVSAvoidcomplexity of endpoint device

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The endpoint device performs multiple functions using the same microphone hardware: it captures audio for the call, detects local voice activity even when muted, and provides notifications. This multi-functionality approach increases reliability of mute status awareness without proportionally increasing device complexity, as the existing microphone is utilized for multiple purposes.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS8878678B2Method and apparatus for providing an intelligent mute status reminder for an active speaker in a conference

Publication Date: 2014.11.04 CISCO TECHNOLOGY INC

AI summary

In one embodiment, a method includes capturing samples of sound associated with an environment, and processing the samples of sound to determine whether the samples of sound likely include voice activity. The samples of sound are captured while a microphone is muted. When it is determined that the samples of sound likely include the voice activity, the method also includes providing a first notification arranged to indicate that voice activity is detected and that the microphone is muted.