Electronic Device Audio Synchronization During Microphone Switching
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Solution Overview
Problem
During video capture, electronic devices face issues with audio data synchronization when switching between internal and external microphones, leading to audio data loss and quality deterioration due to continuous reception of audio through the device's microphone even when an external microphone is connected, and synchronization mismatches during microphone switching.
Innovation Solution
The electronic device generates additional mute data based on the calculated gap time required for connecting a new audio input device, synchronizing video data with both the previous and new audio data by inserting mute data in sections where audio data is not received during the switching process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic device continuously receives audio data through the device's microphone even when an external microphone is connected, then audio data reception is maintained, but audio data quality deteriorates
Solution Approach 1:
The device predicts the switching timing from external microphone to device microphone in advance, and pre-configures the audio input source. This preliminary action ensures that the device microphone is activated at the optimal moment, preventing quality deterioration while maintaining continuous audio reception.
2Adaptability or versatility
If the external microphone connection is released during video capture, then the device can switch to using the device's microphone, but audio data is not received during the switching process
Solution Approach 1:
The device predicts when the external microphone will be disconnected and activates the device microphone in advance. This preliminary activation ensures that audio data reception continues without interruption or loss during the transition between microphones.
Solution Approach 2:
The device monitors the connection status of the external microphone in real-time and uses this feedback to dynamically adjust the audio input source. When disconnection is detected, the system immediately switches to the device microphone, preventing audio data loss.
3Adaptability or versatility
If the electronic device switches from external microphone to device microphone, then audio input flexibility is improved, but synchronization between video data and audio data is not matched
Solution Approach 1:
The device predicts the exact timing of microphone switching and pre-adjusts the synchronization parameters. By calculating the gap time in advance and inserting mute data at the predicted switching moment, the system maintains precise video-audio synchronization while allowing flexible microphone switching.
4Ease of operation
If the device configures connection of the second audio input device, then audio input device switching is completed, but gap time is required which causes synchronization issues
Solution Approach 1:
The device predicts when microphone switching will be needed and begins configuring the second audio input device in advance. This preliminary configuration reduces the actual gap time during switching, minimizing synchronization issues while maintaining operational ease.
Solution Approach 2:
The device maintains audio data reception continuity throughout the configuration process by using predictive timing. The system ensures that audio input remains active and synchronized even during the transition period, eliminating interruptions while completing the configuration.
Data Source
AI summary
An electronic device may include a camera and a processor operatively connected to the camera, wherein the processor may be configured to: acquire video data through the camera; receive first audio data through a first audio input device; perform a connection configuration of a second audio input device as the device receiving audio data is switched from the first audio input device to the second audio input device; calculate a gap time on the basis of a time consumed for completing the connection configuration of the second audio input device; generate silent data on the basis of the calculated gap time; receive second audio data from the second audio input device; and synchronize the video data, the first audio data, the silent data, and the second audio data. Various other embodiments are possible.