Audio Channel Synchronization via Corrective Time Shift
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Solution Overview
Problem
In audio processing, correlated audio channels in a shared acoustic space often experience different delays due to varying properties of communication channels, leading to poor user experience as the same audio is output at different times from different locations, affecting both local and remote users.
Innovation Solution
A method and apparatus that determine the time difference between audio channels and apply a corrective time shift when the difference exceeds a threshold, using silent frames or discarding audio segments to synchronize audio signals, which can be performed by either the server or client apparatuses, ensuring synchronized audio output across the acoustic space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If audio channels are transmitted through communication channels with varying properties, then the audio can be delivered to multiple locations, but the audio signals experience different delays causing desynchronization
Solution Approach 1:
The system performs preliminary determination of time differences between audio channels before audio processing. By calculating the delay differences in advance and applying corrective time shifts proactively, the system prevents desynchronization from occurring, ensuring that audio signals arrive at remote locations in proper temporal alignment without requiring reactive correction after delays have already caused quality degradation.
2Reliability
If corrective time shift is applied to synchronize audio channels, then audio quality is maintained, but additional processing complexity is introduced
Solution Approach 1:
The system changes the time parameter of audio channels by applying corrective time shifts based on determined delay differences. This parameter adjustment synchronizes the audio signals without requiring complex structural modifications to the audio processing system, maintaining reliability through simple temporal alignment while avoiding excessive processing complexity.
3Manufacturing precision
If time difference determination and corrective shifting is performed, then audio synchronization is achieved, but processing time and computational resources increase
Solution Approach 1:
The system performs self-service by automatically determining time differences between audio channels and applying corrective time shifts without requiring manual intervention. This automated process achieves precise audio synchronization while minimizing processing overhead, as the system uses its own resources to correct synchronization issues rather than requiring external processing assistance.
Data Source
AI summary
A method including: determining a time difference between at least a first audio channel and a second audio channel of the same acoustic space; and enabling a corrective time shift between the first audio channel and the second audio channel when the time difference exceeds a threshold.