Wireless Audio Synchronization via Latency Interval Signaling
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Solution Overview
Problem
Achieving synchronization in wireless signal processing systems is challenging due to varying processing times across components, leading to desynchronization issues in audio, control, and monitoring systems where components are not physically connected.
Innovation Solution
A synchronization scheme where a data source transmits a synchronization signal and a latency interval to wireless receiving devices, allowing them to process data streams in sync by delaying processing based on the received signal and specified latency, ensuring synchronized output even with different processing times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless transmitting devices transmit data streams to multiple wireless receiving devices, then the system achieves wireless communication flexibility and mobility, but the processing times vary across components causing desynchronization
Solution Approach 1:
The transmitting device performs preliminary actions by transmitting synchronization signals and latency interval information to receiving devices before actual data stream transmission. This allows receiving devices to pre-calculate and prepare their processing timing, ensuring synchronized operation despite varying processing times. The synchronization signal is transmitted in advance to establish the timing reference frame before data processing occurs.
2Adaptability or versatility
If components are not physically connected in wireless systems, then system mobility and flexibility are improved, but deterministic signal processing and synchronization become difficult to achieve
Solution Approach 1:
The system employs feedback mechanisms where receiving devices transmit acknowledgment signals and timing information back to the transmitting device. This feedback loop allows the transmitting device to adjust synchronization parameters and latency intervals dynamically, compensating for varying processing times and ensuring deterministic synchronization despite the wireless, non-deterministic nature of the communication medium.
3Adaptability or versatility
If each receiving device processes data streams independently with different processing times, then device autonomy and flexibility are improved, but synchronization between devices deteriorates
Solution Approach 1:
The system dynamically adjusts the latency interval parameter based on real-time conditions at each receiving device. Each device autonomously determines its processing time characteristics and the synchronization signal incorporates dynamic timing information that adapts to varying processing speeds. This dynamic adjustment mechanism allows devices to maintain independence in their processing while achieving stable synchronization through continuous timing coordination.
Data Source
AI summary
A data source sends a synchronization signal and information to several data sinks that use the synchronization signal and a specified parameter to determine when to process the information. The data source and data sinks may comprise wireless nodes such as, for example, a wireless audio source that sends multi-channel data to a pair of wireless earpieces. The wireless earpieces use the synchronization signal and a latency interval to determine the appropriate time to output audio based on the audio channels.