Audiovisual Deepfake Detection With Lip-Sync Identity Verification

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Solution Overview

Problem

Conventional deepfake detection systems often focus on either audio or visual data separately, requiring additional computing resources and potentially failing to detect deepfakes in audiovisual data.

Innovation Solution

A machine-learning architecture that integrates audio and visual deepfake detection through layers for speaker recognition, facial recognition, and lip-sync estimation, generating combined scores to determine the likelihood of deepfake content and identity verification.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If separate evaluation systems are used for audio and visual deepfake detection, then each system can be optimized for its specific data type, but the overall detection accuracy decreases and additional computing resources are required

Engineering Contradiction:
Improvedetection accuracyVSAvoidsystem complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent merges separate audio and visual deepfake detection systems into a single integrated machine learning architecture. The system combines audio feature extraction, visual feature extraction, and their fusion into one unified model that processes both data types simultaneously, eliminating the need for separate evaluation systems and improving overall detection accuracy.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The integrated machine learning architecture serves multiple functions within a single system: it performs audio deepfake detection, visual deepfake detection, and generates combined detection scores all through one unified model. This multi-functional approach eliminates redundancy and reduces computing resources compared to separate specialized systems.

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

2Reliability

If separate audio and visual evaluation systems are implemented, then each system can operate independently, but the detection of manipulated audiovisual content becomes less effective

Engineering Contradiction:
Improvedetection reliabilityVSAvoidprocessing efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system merges audio and visual evaluation into a single integrated processing pipeline where both data types are processed simultaneously through shared machine learning layers. This combination allows the system to detect inconsistencies between audio and visual data that would be missed by separate independent systems, improving detection reliability for manipulated content.

Inventive Principle:
Principle #5Merging (Combining)

3Measurement precision

If an integrated machine learning architecture is used for both audio and visual deepfake detection, then detection accuracy improves, but the computational resources required increase

Engineering Contradiction:
Improvedetection accuracyVSAvoidcomputing resources
Core Design Contradiction:
Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The integrated machine learning architecture is segmented into distinct functional layers: audio feature extraction layers, visual feature extraction layers, and fusion layers. This segmentation allows the system to process audio and visual data through specialized pathways before combining them, improving detection accuracy while managing computational resources by avoiding redundant processing.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP4229626B1Audiovisual deepfake detection
Publication Date: 2026.04.15 PINDROP SECURITY INC
  • EP4229626B1 patent drawingFigure 1
  • EP4229626B1 patent drawingFigure 2
  • EP4229626B1 patent drawingFigure 3

AI summary

The embodiments execute machine-learning architectures for biometric-based identity recognition (e.g., speaker recognition, facial recognition) and deepfake detection (e.g., speaker deepfake detection, facial deepfake detection). The machine-learning architecture includes layers defining multiple scoring components, including sub -architectures for speaker deepfake detection, speaker recognition, facial deepfake detection, facial recognition, and lip-sync estimation engine. The machine-learning architecture extracts and analyzes various types of low-level features from both audio data and visual data, combines the various scores, and uses the scores to determine the likelihood that the audiovisual data contains deepfake content and the likelihood that a claimed identity of a person in the video matches to the identity of an expected or enrolled person. This enables the machine-learning architecture to perform identity recognition and verification, and deepfake detection, in an integrated fashion, for both audio data and visual data.