Wireless Microphone Synchronization via Reference Slave Apparatus
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Solution Overview
Problem
In wireless microphone systems, clock deviations between master devices can lead to audio signal collisions and noise, especially in environments where multiple systems overlap, causing interference and disrupting smooth handover of microphone slave devices between systems.
Innovation Solution
A wireless synchronization method is implemented, where a reference slave receiving apparatus repeatedly transmits a wireless control signal to synchronize with a master receiving apparatus, which then transmits a synchronization timing signal to other slave receiving apparatuses, ensuring precise synchronization across different wireless microphone systems, even in overlapping coverage areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple master devices operate with independent clocks in wireless microphone systems, then each system can function autonomously, but clock deviation occurs between master devices causing audio signal collisions and noise
Solution Approach 1:
A reference receiving apparatus is introduced as an intermediary device that receives timing signals from master devices and distributes synchronized timing to all other receiving apparatuses. This mediator enables autonomous operation of multiple wireless microphone systems while maintaining precise clock synchronization, preventing audio signal collisions and noise.
2Area of stationary object
If wireless microphone systems operate in overlapping coverage areas, then system coverage and flexibility are improved, but clock deviation between systems causes wireless signal collision and interference
Solution Approach 1:
The reference receiving apparatus receives timing signals from master devices in different wireless microphone systems and provides feedback by distributing synchronized timing signals to all receiving apparatuses. This feedback mechanism ensures that even in overlapping coverage areas, all systems operate on synchronized clocks, preventing wireless signal collision and interference while maintaining expanded coverage.
3Object-affected harmful factors
If transmission power is suppressed to reduce interference to other wireless communication systems, then radio wave interference is reduced, but communication reliability with distant slave devices deteriorates
Solution Approach 1:
The reference receiving apparatus periodically distributes synchronized timing signals to receiving apparatuses in different wireless microphone systems. This periodic synchronization enables systems to operate with lower transmission power by ensuring precise timing coordination, reducing radio wave interference while maintaining communication reliability through synchronized time-division multiplexing.
Data Source
AI summary
One of the plurality of first slave receiving apparatuses which serves as a reference first slave receiving apparatus repeatedly transmits a wireless control signal for controlling synchronization between a first receiving apparatus segment and a second receiving apparatus segment. One of the plurality of second slave receiving apparatuses which serves as a reference second slave receiving apparatus transmits a reference timing signal for performing synchronization in the second receiving apparatus segment including the reference second slave receiving apparatus to the second master receiving apparatus in synchronization with the wireless control signal. The second master receiving apparatus transmits a synchronization timing signal for performing synchronization in the second receiving apparatus segment including the second master receiving apparatus to another one of the plurality of second slave receiving apparatuses in the second receiving apparatus segment including the second master receiving apparatus, in response to the reference timing signal.