Event Distribution Synchronization for Audio-Visual Alignment
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Solution Overview
Problem
Conventional methods for synchronizing audio and video playback in applications, such as games, suffer from errors in cumulative frame time calculations, leading to significant time gaps between music and graphical interface movements.
Innovation Solution
A computer-implemented method that extracts predefined event-triggering times from event distribution information associated with an audio file, determines the current play time, and controls event locations on the graphical user interface based on this comparison, ensuring accurate synchronization by correlating audio and video playback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cumulative frame time is calculated on a per-frame basis to control location movement, then the graphical interface can be rendered frame by frame, but time gaps accumulate between music playback and location movement
Solution Approach 1:
The patent pre-calculates and stores the cumulative time for each frame in advance, creating a lookup table that maps frame indices to their corresponding cumulative times. During playback, the system directly retrieves the pre-calculated time value instead of accumulating frame-by-frame, eliminating synchronization errors while maintaining rendering efficiency
Solution Approach 2:
The patent creates a copy of the cumulative time data structure that mirrors the audio playback timeline. This separate time reference can be queried independently without affecting the actual playback or rendering processes, enabling precise synchronization checks between audio events and visual elements
2Measurement precision
If event-triggering times are extracted from pre-calculated cumulative time data, then synchronization accuracy is improved, but additional data processing is required
Solution Approach 1:
The cumulative time data is pre-calculated and stored during the audio file processing stage, before playback occurs. This eliminates the need for complex real-time calculations during playback, as the system only needs to retrieve and compare pre-computed values
Solution Approach 2:
The patent introduces an intermediary data structure that stores the mapping between frame indices and cumulative times. This intermediary layer simplifies the synchronization process by providing direct access to time information without requiring complex queries or calculations on the raw audio or video data
Data Source
AI summary
A computer system and method for generating event distribution information using an audio file and controlling events corresponding to the user inputs based on the event distribution information. The computer-implemented method includes: extracting a predefined number of event-triggering times from event distribution information, wherein the event distribution information is associated with an audio file currently played on the computer and the event-triggering times are arranged in a sequential order; determining a current play time for the audio file; and controlling event locations corresponding to user inputs on the display of the computer based on a comparison of the current play time and the extracted event-triggering times.