Wind Break Device for Microphone Pressure Fluctuation Reduction
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Solution Overview
Problem
Existing in-vehicle microphone systems face challenges in reducing the impact of airflow-induced pressure fluctuations, which degrade speech clarity and require multiple microphones or complex signal processing to improve noise reduction.
Innovation Solution
A wind break device with an airflow diverter and flow separation edge creates a recirculation zone around the microphone, directing separated airflow to reduce pressure fluctuations, thereby enhancing microphone performance without the need for multiple microphones or extensive signal processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If multiple microphones or signal-processing software are used to reduce pressure fluctuations, then noise reduction is improved, but device complexity increases
Solution Approach 1:
The invention extracts and removes the harmful airflow and pressure fluctuations from the microphone environment by introducing a wind break structure. This physical barrier redirects the airflow away from the microphone, eliminating the need for complex electronic noise reduction systems while directly addressing the harmful environmental factor.
Solution Approach 2:
The wind break acts as an intermediary element between the airflow and the microphone. It mediates the interaction by redirecting the airflow path, creating a protective zone around the microphone without requiring complex electronic processing or multiple sensors.
2Object-affected harmful factors
If multiple microphones are used to reduce pressure fluctuations, then noise reduction is improved, but packaging complexity increases
Solution Approach 1:
The wind break structure removes the harmful airflow from the microphone vicinity by creating a redirected flow path. This single structural element replaces what would otherwise require multiple microphones and their associated packaging, reducing the overall volume required for the system.
3Object-affected harmful factors
If multiple microphones are used to reduce pressure fluctuations, then noise reduction is improved, but circuitry complexity increases
Solution Approach 1:
The invention extracts the problem at its source by physically removing the harmful airflow from the microphone environment using a wind break. This eliminates the need for multiple microphones and their associated circuitry for noise reduction, significantly simplifying the electrical system while maintaining noise reduction effectiveness.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces airflow-induced noise, improving speech clarity and intelligibility, simplifying system design, and reducing packaging and circuitry complexity while maintaining high signal-to-noise ratios.
Implementation Method 1
Airflow separates from one of the airflow diverter or the flow separation edge. The separated airflow is directed as one of recirculating airflow or a major airflow.
Implementation Method 2
an airflow diverter and a flow separation edge which partially borders a recirculation zone of the airflow diverter. The recirculating airflow is directed into the recirculation zone.
Data Source
AI summary
A wind break device for a microphone includes an airflow diverter and a flow separation edge partially bordering a microphone end of the airflow diverter. The microphone zone located between the flow separation edge and is part of the recirculation zone. The microphone is located in the microphone zone. Airflow separates from one of the airflow diverter or the flow separation edge. The separated airflow is directed as one of recirculating airflow or a major airflow and the recirculating airflow is directed into the recirculation zone. The major airflow is directed over the microphone zone and the recirculation zone to reduce the level of pressure fluctuations experienced by the microphone in the microphone zone.