Subtitle Synchronization Using Human Voice Detection
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Solution Overview
Problem
Existing methods for synchronizing audiovisual content with subtitles often result in misalignment due to editing errors, rendering issues, and language translation misalignments, leading to low-quality synchronization, which is costly and complex to correct.
Innovation Solution
A system comprising a human voice analyzer, subtitle analyzer, misalignment analyzer, and alignment unit that determines timing delta values and correction factors to synchronize human voice segments with subtitles, allowing for real-time lip sync adjustments within predetermined thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional subtitle synchronization methods are used, then synchronization can be achieved, but misalignment occurs due to editing errors, rendering issues, and language translation misalignments
Solution Approach 1:
The patent replaces traditional mechanical/time-based synchronization methods with voice biometric authentication. Instead of relying on manual timing adjustments or automated subtitle timing files that are prone to editing errors and rendering issues, the system uses voice pattern recognition to dynamically determine when a user actually begins consuming the media content, thereby automatically synchronizing subtitle display with actual user engagement
Solution Approach 2:
The system enables self-service synchronization by automatically detecting user voice patterns and adjusting subtitle timing without requiring manual intervention. The voice biometric system autonomously identifies the user's voice, determines consumption start time, and synchronizes subtitles based on this detected information, eliminating the need for manual subtitle alignment corrections
2Manufacturing precision
If complex synchronization methods are applied to fix misalignment, then synchronization quality improves, but the process becomes costly and complex
Solution Approach 1:
The patent replaces complex manual or automated subtitle alignment processes with voice biometric detection. Instead of using multiple-phase frameworks requiring audio fingerprint annotation and anchor point enrichment, or time alignment speech recognition systems, the invention uses simple voice pattern matching to determine user engagement timing, thereby achieving accurate synchronization through a less complex methodology
Solution Approach 2:
The system extracts only the essential information needed for synchronization by detecting voice patterns and determining consumption start time. Rather than performing complex operations including audio fingerprint analysis, anchor point identification, and multiple alignment phases, the invention extracts the critical timing information directly from voice detection, simplifying the overall process while maintaining accuracy
3Manufacturing precision
If manual preparation and complex operations are performed to align subtitles, then synchronization accuracy improves, but time and cost increase
Solution Approach 1:
The system performs preliminary voice biometric registration to establish user voice patterns before media consumption begins. This pre-established voice profile enables real-time automatic synchronization without requiring manual subtitle preparation or complex alignment operations at the time of content delivery, thereby reducing both time and cost while maintaining accuracy
Solution Approach 2:
The synchronization process becomes self-service through automatic voice detection and timing determination. The system autonomously identifies user engagement start time through voice pattern recognition and automatically adjusts subtitle synchronization accordingly, eliminating the need for manual file preparation, automated or manual alignment operations, and complex processing steps
Data Source
AI summary
Audiovisual content in the form of video clip files, streamed or broadcasted may further contain subtitles. Such subtitles are provided with timing information so that each subtitle should be displayed synchronously with the spoken words. However, at times such synchronization with the audio portion of the audiovisual content has a timing offset which when above a predetermined threshold is bothersome. The system and method determine time spans in which a human speaks and attempts to synchronize those time spans with the subtitle content. Indication is provided when an incurable synchronization exists as well as the case where the subtitles and audio are well synchronized. It further is able to determine, when an offset exists, the type of offset (constant or dynamic) and providing the necessary adjustment information so that the timing used in conjunction with the subtitles timing provided may be corrected and synchronization deficiency resolved.