Audio Processing Apparatus for Synchronized Video
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In applications like live television broadcasts and teleconferences, the return delay from satellite links can cause over-talking issues due to unsynchronized audio and video signals, and similar problems arise in live streaming where maintaining audio-video synchronization is challenging.
Innovation Solution
An apparatus that classifies audio signals into two categories based on synchronization needs, processing the first audio signal for time synchronization with a video signal, introducing a longer delay, and the second audio signal with a shorter delay, optimized for minimum delay, to ensure accurate synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If audio signals are processed with a single fixed delay to synchronize with video, then audio-video synchronization is improved, but conversational speech responsiveness deteriorates
Solution Approach 1:
The patent segments audio signals into different types (first audio signals for synchronization and second audio signals for minimal delay) and processes them through separate paths with different delay characteristics. This allows simultaneous optimization for both synchronization accuracy and conversational responsiveness without compromise.
Solution Approach 2:
Different delay characteristics are applied locally to different audio signal types. First audio signals receive longer delay for synchronization with video events, while second audio signals receive shorter delay for conversational speech. This localized optimization resolves the contradiction by matching processing characteristics to content requirements.
2Device complexity
If a single audio processing path is used for all audio signals, then device complexity is reduced, but audio processing adaptability deteriorates
Solution Approach 1:
The processing system is segmented into multiple parallel paths (first path for synchronization, second path for minimal delay) that can handle different audio signal types. This segmentation enables adaptability to various audio content while maintaining manageable complexity through structured organization.
Solution Approach 2:
The system dynamically selects which processing path to use based on audio signal classification. The classifier analyzes audio characteristics and routes signals to appropriate paths, providing adaptive handling without requiring all processing options to be active simultaneously, thus managing complexity.
Data Source
AI summary
An apparatus comprising means for:classifying an audio signal as at least a first audio signal for time synchronization with a video signal or a second audio signal not for time synchronization with a video signal;processing the first audio signal for time synchronization with the video signal wherein the processing introduces a first delay for time synchronization with the video signal;processing the second audio signal wherein the processing introduces a second delay shorter than the first delay.