Earphone Microphone Segmentation for Binaural and Telephony Modes
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Solution Overview
Problem
Existing earphones with stereo microphones suffer from reduced speech quality during telephone functions due to inadequate design for multimedia devices with both telephone and audio recording/reproduction capabilities.
Innovation Solution
An earphone with two ear units containing microphones for binaural recording, a separate microphone for capturing speech, and a connection unit that automatically switches between modes for telephone and audio recording/reproduction, incorporating active noise compensation using the ambient sound microphones for improved speech quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If earphones with stereo microphones are used for binaural recording, then audio recording quality is improved, but speech quality for telephone function deteriorates
Solution Approach 1:
The earphone is divided into functionally separate microphone units: two ear units with microphones for binaural recording and a separate microphone unit for capturing speech. This segmentation allows each microphone type to be optimized for its specific function, resolving the contradiction between audio recording quality and speech quality.
Solution Approach 2:
The earphone is designed as a multi-functional device that can operate in both binaural recording mode and telephone mode. The connection unit enables automatic switching between these functions, allowing the same earphone to serve multiple purposes without compromising either audio recording quality or speech quality.
2Device complexity
If a single microphone is used for both binaural recording and telephoning, then device complexity is reduced, but functional performance deteriorates
Solution Approach 1:
The microphone system is segmented into distinct functional units: ear units for binaural recording and a separate microphone unit for speech capture. This segmentation enables the device to maintain simplicity in each individual component while achieving high functional performance through coordinated operation.
Solution Approach 2:
The connection unit provides dynamic switching capability that automatically adapts the microphone configuration based on the operational mode (recording or telephoning). This dynamic adjustment allows the system to optimize performance for each function without requiring permanent complex hardware configurations.
3Ease of operation
If automatic mode switching is implemented, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The connection unit automatically detects the operational mode and switches between microphone configurations without requiring manual user intervention. The system serves itself by monitoring the multimedia device state and autonomously adjusting the audio path, improving ease of operation while keeping the control logic centralized and manageable.
Data Source
AI summary
An improved earphone which has stereophonic microphones and which is better suited for connection to such a multimedia device includes two ear units to be worn in or on the ear, which each include at least one sound generator and a microphone for binaural recording of ambient sound, a microphone unit which includes at least one further microphone, an operating unit which is connected via cable to the two ear units and the microphone unit, and a connection unit as interface, which is suitable for connecting the earphone to the multimedia device. For easy handling the earphone has at least two different function modes between which switching can take place both automatically and manually.