Multimedia Audio Graphics Synchronization Method
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Solution Overview
Problem
Existing multimedia presentation technologies struggle to synchronize audio and graphics independently of graphic contributions, particularly when changing presentation speed, leading to unnatural voice distortions and unsynchronized displays.
Innovation Solution
A method that synchronizes audio and graphics by creating a list of graphic objects and speech phrases, processing them in an arrangement string, and allowing for adjustable processing speed, ensuring that audio and graphics remain synchronized even when the speed is changed by the user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the playing speed of audio and graphics is changed, then the presentation can be adapted to different learning needs, but the audio and graphics become unsynchronized and the voice becomes distorted
Solution Approach 1:
The presentation is segmented into discrete graphic objects and corresponding speech phrases. Each graphic object is processed independently through a queue system, allowing individual control of processing speed without affecting the synchronization relationship between graphics and audio. The segmentation enables speed adjustment at the object level while maintaining overall synchronization.
Solution Approach 2:
The system implements dynamic speed adjustment capability where the processing speed of graphic objects can be changed during presentation without breaking synchronization. The queue-based processing system dynamically adapts to speed changes by adjusting the timing and sequence of graphic object rendering, ensuring that audio and graphics remain synchronized even when presentation speed varies.
2Device complexity
If fixed intervals are set for speech and image display, then the presentation structure is simple, but the intervals do not fit when image displaying time changes according to image size
Solution Approach 1:
The system replaces fixed intervals with dynamic timing based on actual graphic object processing. Each graphic object in the queue is processed at its appropriate speed, and the speech phrases are automatically timed to match the completion of each graphic object. This dynamic approach adapts to varying image sizes and processing requirements without requiring complex manual interval adjustments.
Solution Approach 2:
The queue-based processing system automatically manages the timing and synchronization of speech phrases with graphic objects. The system self-adjusts the presentation节奏 based on the processing speed of each graphic object, eliminating the need for manual interval setting while maintaining simple overall structure.
3Ease of operation
If the computer processes graphics at variable speeds, then the presentation can be customized, but the audio and graphics become desynchronized
Solution Approach 1:
By segmenting the presentation into discrete graphic objects processed through a queue, the system allows variable processing speeds for each object while maintaining synchronization. The speech phrases are associated with specific graphic objects and are played at the appropriate moment based on queue processing completion, ensuring precision is maintained even with customization.
Solution Approach 2:
The system uses feedback from the graphic object processing completion to trigger the corresponding speech phrase playback. This feedback mechanism ensures that even when processing speeds vary, the audio-graphics synchronization precision is maintained by automatically adjusting playback timing based on actual processing completion.
Data Source
AI summary
In a multimedia presentation, having speech and graphic contributions, a list of graphic objects is provided. Each graphic is associated to a graphic file capable of being executed by a computer to display a corresponding graphic contribution on a screen. A speech file comprising a sequence of phrases is also created, each phrase comprising a speech contribution explaining at least one graphic contribution associated to a respective graphic object. Then, an arrangement string is created obtained as a sequence of a first graphic object and a respective first phrase, and then a second graphic object and a respective second phrase, and so on up to completion of all graphic objects and phrases of said list and of said speech file respectively. A processing speed for displaying the graphic objects is chosen.