Screen Sound Failure Detection With Speaker Fallback Audio
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Solution Overview
Problem
Piezoelectric ceramic capacitive components in electronic devices can fail, leading to silence or noise during voice communication, affecting user experience and device reliability.
Innovation Solution
An audio playback method that includes detecting the failure of the screen sound production component by monitoring parameters like load current, voltage, impedance, or admittance, and switching to a speaker for sound production when failure is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a screen sound production component is used to enable voice communication function, then the hole in front panel can be reduced, but the component may fail leading to silence or noise during voice communication
Solution Approach 1:
The system performs preliminary failure detection by monitoring parameters (current, voltage, impedance, admittance) of the screen sound production component before voice communication occurs. This allows the system to identify potential failures in advance and switch to alternative sound production components (speaker or earpiece) proactively, preventing silence or noise issues during actual use and thereby improving voice communication reliability while maintaining the reduced hole area design
Solution Approach 2:
The system continuously monitors operational parameters (current, voltage, impedance, admittance) of the screen sound production component and uses this feedback to detect failures. Based on the feedback from parameter monitoring, the system dynamically switches between different sound production components, creating a closed-loop control system that maintains reliable voice communication despite component failures
2Reliability
If parameters are monitored to detect component failure, then reliability can be improved, but device complexity increases
Solution Approach 1:
The monitoring system is designed to detect multiple types of failures (breaking, electrode falling off, contact resistance increase) by measuring a single set of electrical parameters (current, voltage, impedance, admittance). This multi-functional approach allows comprehensive failure detection without proportionally increasing system complexity, as one monitoring infrastructure serves multiple detection purposes
Solution Approach 2:
The screen sound production component's own operational parameters (current, voltage, impedance, admittance) are used to detect its own failures. The component essentially monitors itself through these electrical characteristics, eliminating the need for separate complex external diagnostic systems and reducing overall device complexity while maintaining high reliability
Data Source
AI summary
An audio playback method, a failure detection method for a screen sound production component, and an electronic device. The audio playback method includes: receiving an audio playback instruction; where the audio playback instruction is used to instruct the electronic device to play a first audio; playing, in response to receiving the audio playback instruction, a detection audio by using the screen sound production component; obtaining a first parameter in a process of playing the detection audio; determining, based on the first parameter, whether the screen sound production component fails; where the first parameter is at least one of a real-time load current, a real-time load voltage, a real-time impedance, and a real-time admittance of the screen sound production component; and when the screen sound production component fails, switching the sound production component to the speaker, and playing the first audio by using the speaker.