Wireless Audio Transmitter Feedback Loop for Signal Optimization

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Solution Overview

Problem

Wireless audio transmission systems, such as wireless microphone systems, face challenges in simplifying the setup and sound check process, particularly in ensuring adequate transmission quality across various positions and frequencies.

Innovation Solution

A wireless audio transmission system with a stationary or mobile receiver that includes a receiving unit, audio processing unit, and a sound check unit for analyzing signal quality and transmitting analysis information back to the mobile transmitter via a return channel, allowing for real-time feedback on signal strength and link quality, enabling optimization of antenna position and installation location.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional wireless audio transmission systems are used without feedback mechanisms, then the system structure remains simple, but the setup and sound check process becomes complex and time-consuming

Engineering Contradiction:
Improvesetup processVSAvoidsystem structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent implements a feedback mechanism where the receiver analyzes wireless audio transmission quality (RSSI, LQI) and transmits this information back to the mobile transmitter via a return channel. This allows real-time monitoring and optimization of transmission parameters, simplifying the setup process while maintaining manageable system complexity through automated feedback loops.

Inventive Principle:
Principle #23Feedback

2Reliability

If comprehensive sound check is performed at every possible position, then transmission quality assurance is improved, but the time required for setup increases

Engineering Contradiction:
Improvetransmission qualityVSAvoidsound check time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs self-diagnosis through automated sound check functionality. The receiver automatically analyzes transmission quality parameters (RSSI, LQI) and provides feedback without requiring manual intervention at every position. This automated self-service approach ensures reliable transmission quality assessment while significantly reducing the time needed compared to manual checking at all possible positions.

Inventive Principle:
Principle #25Self-service

3Measurement precision

If manual checking of transmission frequencies is performed, then frequency optimization is achieved, but the ease of operation decreases

Engineering Contradiction:
Improvefrequency optimizationVSAvoidfrequency checking
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The system automatically monitors and analyzes transmission frequency quality through the sound check unit, which measures parameters like RSSI and LQI. The feedback mechanism then communicates this information to the mobile transmitter, enabling automated frequency optimization without requiring manual intervention, thus maintaining high measurement precision while improving ease of operation.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS9444563B2Wireless audio transmission system and method of wireless audio transmission
Publication Date: 2016.09.13 SENNHEISER ELECTRONICS GMBH & CO KG
  • US9444563B2 patent drawing
  • US9444563B2 patent drawing

AI summary

There is provided a wireless transmission system comprising at least one mobile transmitter for wireless audio transmission having a user interface. The wireless audio transmission system further has a stationary receiver for receiving the wireless audio transmission from the at least one mobile transmitter. The receiver has a receiving unit for wirelessly receiving the audio signals transmitted from the mobile transmitters. The stationary receiver also has an audio processing unit for performing audio processing of the audio signals received by the receiving unit and a sound check unit for analyzing the wireless audio signals received by the receiving unit. The stationary receiver further has a transmitter for transmitting at least parts of the analysis of the sound check unit to the mobile transmitters by way of a return channel.