Call Audio Transmission Switching to Reduce Hearing Aid Noise
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Solution Overview
Problem
Electronic devices struggle to provide optimal call sound quality for hearing-impaired users by minimizing magnetic field noise interference from RF operations, particularly during calls when no user voice is being transmitted.
Innovation Solution
The electronic device switches between a first transmission mode for voice transmission and a second reception mode for reduced magnetic field noise by detecting user utterances, adjusting transmit power and peak current, and using separate communication circuits for long-range and short-range connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the electronic device operates in a transmission mode with high transmit power for voice transmission, then the voice signal quality is improved, but magnetic field noise interference increases
Solution Approach 1:
The electronic device dynamically switches between first transmission mode (high transmit power) and second reception mode (low transmit power) based on whether user voice is detected. This dynamic adjustment optimizes voice signal quality when needed while minimizing magnetic field noise interference during silent periods
Solution Approach 2:
The device changes the transmit power parameter by switching between different operation modes. In the first transmission mode, high transmit power is used for optimal voice transmission; in the second reception mode, low transmit power is used to reduce magnetic field noise, thereby resolving the contradiction between signal quality and interference
2Reliability
If the electronic device maintains continuous high transmit power for reliable communication, then communication reliability is improved, but energy consumption increases
Solution Approach 1:
The device employs periodic voice activity detection and mode switching between first transmission mode and second reception mode. By alternating between high-power transmission during voice segments and low-power reception during silent segments, the device maintains communication reliability when needed while significantly reducing overall energy consumption
3Device complexity
If the electronic device uses a single communication circuit for both long-range and short-range communication, then device complexity is reduced, but interference between communication channels increases
Solution Approach 1:
The communication module is segmented into a first communication circuit for long-range communication and a second communication circuit for short-range communication. This physical separation eliminates interference between communication channels while maintaining manageable device complexity through modular architecture
Data Source
AI summary
An electronic device according to an embodiment of the disclosure includes: a microphone, a communication module including a first communication circuit configured to provide a call channel with a first external electronic device and a second communication circuit configured to provide a communication channel with a second external electronic device, a processor electrically connected with the communication module. The processor is configured to: allow the electronic device operating in a first transmission mode and the first external electronic device to establish a call connection with each other through the first communication circuit, identify whether there is an utterance of a user wearing the second external electronic device, while the call connection is maintained, and operate in a second transmission mode different from the first transmission mode, based on a voice signal of the user to be transmitted to the first external electronic device not being recognized, while the call connection is maintained, and operate in the first transmission mode, based on the voice signal of the user to be transmitted to the first external electronic device being recognized, while the call connection is maintained.