Audio Input Switching with Signal Mixing for Seamless Transitions
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Solution Overview
Problem
Electronic devices face disruptions in audio recording due to unexpected disconnections of external microphones during video capture, leading to discrepancies between video and audio signals, as they often forcibly switch between internal and external microphones, resulting in undesirable silence or poor audio quality.
Innovation Solution
An electronic device with a processor that receives audio signals from both internal and external microphones, synchronizes and mixes them during a designated time period, and seamlessly switches between recording devices to maintain continuous audio input, preventing interruptions and ensuring synchronized audio and video signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the electronic device uses an external microphone for audio recording during video capture, then audio quality is improved, but connection stability deteriorates due to unexpected disconnections
Solution Approach 1:
The system activates the internal microphone in advance before the external microphone disconnects, ensuring that audio recording continues without interruption. This preliminary activation prevents the audio gap that would otherwise occur during the switch from external to internal microphone.
Solution Approach 2:
The internal microphone serves as an intermediary backup when the external microphone connection becomes unstable or disconnects. By having this intermediate audio input ready, the system maintains continuous audio recording without relying solely on the external microphone connection.
2Adaptability or versatility
If the electronic device forcibly switches between internal and external microphones, then adaptability is improved, but audio continuity deteriorates resulting in silence or poor audio quality
Solution Approach 1:
The system performs preliminary activation of the internal microphone before the actual switch from external microphone occurs. This ensures that when the switch is forced due to connection issues, the internal microphone is already ready to capture audio immediately, preventing silence or audio gaps.
Solution Approach 2:
The system maintains continuous audio recording by ensuring that the internal microphone is activated and ready before the external microphone disconnects. This continuity of useful action prevents interruptions in audio capture, ensuring that the audio recording proceeds without silence or degradation in quality.
3Measurement precision
If the electronic device activates both internal and external microphones simultaneously, then audio quality is improved through mixing, but device complexity increases
Solution Approach 1:
The system merges the audio signals from both the internal and external microphones by mixing them together. This combining of signals allows the device to utilize the superior audio quality of the external microphone while having the internal microphone as a backup, improving overall audio quality without requiring completely separate processing paths.
Data Source
AI summary
An electronic device and method are disclosed. The electronic device includes an internal microphone, a communication module, and at least one processor. The processor implements the method, including: receiving, through the communication module, a first audio signal input through an external microphone included in an external electronic device communicatively connected to the electronic device, activating the internal microphone in response to detecting a device switch event switching from the external microphone to the internal microphone while receiving the first audio signal, receiving a second audio signal input through the internal microphone, synchronizing and mixing the first audio signal and the second audio signal during a designated first time period, and deactivating the external microphone upon detecting lapse of the designated first time period.