Audio Recording via External Output Apparatus for Noise Reduction
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Solution Overview
Problem
Electronic devices like mobile phones and tablets face poor audio recording quality due to high noise levels and weak far-field recording signals, and lack real-time monitoring and control capabilities for audio recording.
Innovation Solution
An audio recording method and apparatus that utilize an external audio output apparatus, such as a line-controlled earphone, to connect with the device, allowing real-time audio signal output and gain adjustment, enabling improved recording quality and monitoring through a control component like the Hook Key for starting, pausing, and adjusting audio recording.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If audio recording is performed using the built-in microphone and speaker of the electronic device, then the recording can be performed without additional equipment, but the recording quality is poor due to high noise levels and weak far-field recording signals
Solution Approach 1:
The patent introduces an external audio output apparatus (such as headphones or earphones) as an intermediary device. The microphone picks up audio signals which are then output through the external audio output apparatus's speaker, and the user can monitor the recording quality through the earphones. This intermediary system allows for better noise isolation and higher recording quality compared to using the device's built-in speaker.
2Measurement precision
If the electronic device uses its built-in speaker for real-time audio monitoring, then the monitoring can be performed internally, but the monitoring quality is insufficient and cannot effectively guide recording adjustments
Solution Approach 1:
The patent uses the external audio output apparatus as a mediator for monitoring. The audio signal flows from the microphone through the device's processing to the external audio output apparatus's speaker, allowing the user to hear the recording quality through the earphones. This provides superior monitoring quality compared to the built-in speaker while leveraging existing external devices rather than adding complex new monitoring hardware.
3Length of moving object
If the electronic device performs audio recording without external equipment, then the operation is simple, but the far-field recording signal is weak and the recording distance is limited
Solution Approach 1:
The external audio output apparatus serves as an intermediary that enables better far-field recording. The microphone captures audio signals from a distance, and the external audio output apparatus's speaker provides a more efficient acoustic output path, allowing the user to monitor distant sound sources more effectively and maintain recording capability at greater distances.
4Ease of operation
If the electronic device lacks real-time audio monitoring capability, then the device structure remains simple, but the user cannot monitor the recording effect and make real-time adjustments
Solution Approach 1:
The patent leverages the multi-functionality of external audio output apparatus. The same external device (headphones/earphones) that users already possess for audio playback is utilized for recording monitoring purposes. This approach enables real-time monitoring capability without requiring dedicated monitoring hardware, as the external audio output apparatus serves dual purposes: audio playback and recording monitoring.
Data Source
AI summary
A method, apparatus and computer program product are disclosed. The method includes acquiring an instruction, picking up an audio signal with an electronic device, determining whether an output apparatus is connected to the electronic device, outputting the audio signal via the output apparatus, and recording the audio signal. The apparatus includes a processor, an output apparatus, a microphone, and a storage apparatus, wherein the processor acquires an instruction, picks up an audio signal, determines whether the output apparatus is connected, outputs the audio signal via the output apparatus and records the audio signal to the storage medium. The computer program product includes executable code to perform acquisition of an instruction, pickup of an audio signal with an electronic device, a determination of whether an output apparatus is connected, output of the audio signal, and recording of the audio signal.