Voice Control Application Cadence Analysis for False Trigger Prevention

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Voice-activated devices often inadvertently trigger due to detecting keyword phrases in normal conversations or background audio, leading to frustration and unintended device actions.

Innovation Solution

A voice control application that determines whether to activate a voice-capable device based on the user's speaking cadence, analyzing the timing and rhythm of voice inputs to differentiate between intentional commands and casual conversations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If the device uses always-on listening to detect trigger words, then the device can quickly respond to user queries, but the device may be inadvertently triggered by normal conversations or background audio

Engineering Contradiction:

Improveresponse speedVSAvoidtrigger accuracy

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The system performs preliminary analysis of speaking cadence and pause patterns before triggering the voice assistant. By detecting unusual pauses or deviations from normal speaking patterns, the system can distinguish between intentional commands and casual mentions of trigger words, preventing false activations while maintaining quick response to genuine commands

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system continuously monitors speaking cadence and provides feedback to the trigger detection mechanism. By analyzing pause durations, speech rate variations, and temporal patterns in real-time, the system dynamically adjusts trigger sensitivity to differentiate between conversational contexts and command intents

Inventive Principle:

Principle #23Feedback

2Productivity

If the device monitors for trigger words continuously, then the device can detect user commands quickly, but the device complexity increases

Engineering Contradiction:

Improvecommand detection efficiencyVSAvoidsystem complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The system segments the audio processing task into distinct stages: continuous lightweight monitoring for trigger words, followed by more intensive cadence analysis only when a potential trigger is detected. This segmented approach maintains high detection efficiency while avoiding the computational overhead of continuous complex analysis

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system applies partial action by performing full cadence analysis only on a subset of detected trigger instances - specifically those that exhibit ambiguous temporal patterns. For clear-cut cases, the system uses simpler detection logic, thereby reducing overall computational complexity while maintaining accuracy

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS20240386882A1Systems and methods for determining whether to trigger a voice capable device based on speaking cadence

Publication Date: 2024.11.21 ADEIA GUIDES INC

AI summary

Systems and methods are described for determining whether to activate a voice activated device based on a speaking cadence of the user. When the user speaks with a first cadence the system may determine that the user does not intend to activate the device and may accordingly not to trigger a voice activated device. When the user speaks with a second cadence the system may determine that the user does wish to trigger the device and may accordingly trigger the voice activated device.