Boom Microphone Wireless Control Module for Headphones
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Solution Overview
Problem
Existing microphone systems for headphones lack efficient wireless communication and automatic call management, especially in noisy environments, and fail to provide a natural voice reproduction experience during phone calls.
Innovation Solution
A boom microphone system with a control module that enables wireless communication via Bluetooth, automatic call management, and natural voice reproduction through signal equalization and level adjustment, along with a non-axisymmetric connector for secure attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a microphone system is integrated into headphones for wireless communication, then hands-free phone calls are enabled, but the system complexity increases due to additional power sources and control modules
Solution Approach 1:
The headphone device is designed to perform multiple functions: it serves as both a music playback device and a hands-free telephone communication device. The control module integrated into the headphone handles both audio playback control and telephone call management, eliminating the need for separate dedicated devices and reducing overall system complexity.
Solution Approach 2:
The microphone system is merged with the headphone structure. The microphone is positioned on the headphone housing near the user's mouth, and the control module is integrated into the headphone's existing circuitry. The power source from the headphone is shared to supply both the audio playback function and the microphone transmission function, thereby avoiding additional power sources.
2Reliability
If signal equalization and level adjustment are implemented for natural voice reproduction, then voice quality improves, but the processing complexity and power consumption increase
Solution Approach 1:
The control module is pre-programmed with equalization and level adjustment parameters optimized for natural voice reproduction. These signal processing settings are established in advance during device manufacturing or initial setup, allowing the system to automatically apply the correct processing without requiring real-time user adjustment or complex adaptive algorithms, thereby reducing power consumption while maintaining high voice quality.
3Productivity
If automatic call management features are added, then call handling efficiency improves, but the device complexity and manufacturing cost increase
Solution Approach 1:
The control module is designed to automatically detect and respond to various call scenarios without user intervention. It automatically switches between music playback and telephone call modes, manages microphone activation, and handles call termination. This self-service capability simplifies the user interface and reduces the need for additional physical buttons or controls, thereby easing manufacturing while improving call handling efficiency.
4Reliability
If a non-axisymmetric connector is used for microphone attachment, then connection reliability improves, but the manufacturing precision requirements increase
Solution Approach 1:
The connector is designed with a non-axisymmetric (asymmetric) geometry that allows it to be inserted in only one correct orientation. This asymmetric design prevents incorrect insertion and ensures reliable electrical and mechanical connection. The asymmetry is incorporated into the basic connector structure itself, using standard manufacturing tolerances to achieve the asymmetric shape, thereby avoiding the need for extremely tight precision requirements while still ensuring connection reliability.
Data Source
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AI summary
Among other features, a boom microphone has a microphone connector; an earcup module includes an earcup connector jack to connect to a headphone and a boom lead-in to receive the microphone connector; and a control module communicates voice signals wirelessly between (a) the boom microphone and headphone and (b) a telephone.