Wireless Microphone Modulation Control for Mixed Audio Quality
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Solution Overview
Problem
Existing wireless audio systems lack flexibility in making tradeoffs between system capacity, link performance, range, and perceived audio quality due to fixed modulation and coding schemes for all microphones, limiting optimization and efficiency.
Innovation Solution
A wireless microphone system that classifies microphones based on audio quality parameters and environmental conditions, allowing for individual assignment of modulation and coding schemes to optimize system performance and capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed modulation and coding schemes are used for all microphones, then system simplicity and ease of operation are improved, but system capacity optimization and audio quality flexibility are worsened
Solution Approach 1:
The patent applies local quality by assigning different modulation and coding schemes to different microphones based on their specific audio quality requirements and environmental conditions. Each microphone can be individually configured with appropriate parameters rather than using a uniform configuration for all microphones, enabling optimized audio quality for each channel while maintaining overall system manageability.
2Device complexity
If fixed modulation and coding schemes are used for all microphones, then device complexity is reduced, but system capacity and link performance optimization are limited
Solution Approach 1:
The patent implements parameter changes by dynamically adjusting modulation and coding scheme parameters for each microphone based on environmental conditions and audio quality requirements. The system can modify transmission parameters such as modulation order, coding rate, and bandwidth allocation to optimize system capacity and link performance without requiring complete system redesign.
3Productivity
If higher modulation and coding schemes are used, then audio bit rate and system capacity are improved, but bit error rate increases and link reliability deteriorates
Solution Approach 1:
The patent applies dynamics by enabling flexible and dynamic adjustment of modulation and coding schemes based on real-time environmental conditions and audio quality requirements. The system can transition between different modulation orders (e.g., QPSK, 16-QAM, 64-QAM) and coding rates to balance bit rate and reliability, allowing higher bit rates when conditions permit while maintaining link reliability when environmental challenges arise.
Data Source
AI summary
A wireless microphone system is disclosed. The system includes a plurality of wireless microphones each classified in accordance with one or more audio quality parameters. The system also includes a control device communicatively coupled to the plurality of wireless microphones. The control device is configured to determine that a first wireless microphone corresponds to a first audio classification, and that a second wireless microphone corresponds to a second, different, audio classification. The control device is also configured to determine a first modulation and coding scheme for the first wireless microphone based on the first audio classification, and a second modulation and coding scheme for the second wireless microphone based on the second audio classification. The control device is further configured to transmit, to the first and second wireless microphones respectively, the determined first and second modulation and coding schemes.