Contextual Audio Feedback Prevention for Video Conferences

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Solution Overview

Problem

Audio feedback loops, such as echo or resonant-type feedback, frequently disrupt video conferences, causing inconvenience and inefficiency, and existing solutions are either slow or resource-intensive.

Innovation Solution

Systems and methods utilize contextual information, including device status and position data, to proactively identify and prevent audio feedback loops by muting or adjusting audio devices before they occur, using techniques like Bluetooth proximity detection and machine learning models.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing solutions are used to detect and correct audio feedback loops, then audio feedback can be corrected, but the solutions are either slow or resource-intensive

Engineering Contradiction:
Improveaudio feedback correctionVSAvoidcorrection speed
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary actions by proactively identifying potential audio feedback loop conditions using contextual information (device status, position data, Bluetooth proximity detection) before the feedback loop actually occurs. This allows the system to prevent feedback loops in advance rather than reacting after they start, thereby improving correction speed while maintaining reliability

Inventive Principle:
Principle #10Preliminary action

2Reliability

If existing solutions are used to detect and correct audio feedback loops, then audio feedback can be corrected, but the solutions are either slow or resource-intensive

Engineering Contradiction:
Improveaudio feedback correctionVSAvoidresource consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system applies partial action by selectively monitoring and analyzing only relevant contextual information (device status, position data, proximity signals) rather than continuously processing all possible audio signals. This selective approach maintains reliable feedback loop prevention while significantly reducing computational resources and energy consumption compared to comprehensive audio analysis methods

Inventive Principle:
Principle #16Partial or excessive action

3Productivity

If contextual information is used to proactively identify and prevent audio feedback loops, then audio feedback loops can be prevented automatically and efficiently, but additional device information processing is required

Engineering Contradiction:
Improvefeedback loop prevention efficiencyVSAvoidinformation processing requirements
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The system leverages multi-functionality by utilizing existing device capabilities (Bluetooth proximity detection, position data collection, device status monitoring) for multiple purposes: these same components serve both their original functions and the additional function of identifying potential audio feedback loop conditions. This approach improves prevention efficiency without significantly increasing device complexity, as existing hardware and software resources are repurposed rather than adding new specialized components

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

Data Source

PatentUS12363260B1Correcting audio feedback using contextual information
Publication Date: 2025.07.15 ZOOM COMMUNICATIONS INC
  • US12363260B1 patent drawing
  • US12363260B1 patent drawing
  • US12363260B1 patent drawing

AI summary

Systems and methods for correcting audio feedback using contextual information are provided. A method, comprising steps performed by a first client device, includes joining a video conference hosted by a video conference provider, the video conference having a plurality of client devices. The first client device can determine first information about the first client device, the first information comprising first status information about first audio input and output devices and a position of the first client device and receive second information about a second client device of the plurality of client devices, the second information comprising second status information about a second audio input and output devices and a position of the second client device. The first client device may use the first and second information to identify a potential audio feedback loop and execute a command to prevent the potential audio feedback loop.