Electronic Device Voice Control Noise Reduction
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Solution Overview
Problem
Voice recognition performance is reduced in electronic devices due to noise interference from nearby audio devices in IoT and home network environments, limiting the effectiveness of voice-based control services.
Innovation Solution
An electronic device with a microphone, communication circuitry, and a processor that can detect a trigger signal to reduce audio output levels of external audio devices, operate in a voice control mode, and adjust audio levels based on user input to optimize voice recognition accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If beam forming technology using a microphone array is applied to improve voice recognition, then voice recognition function is enhanced, but noise from neighboring audio devices still reduces recognition accuracy
Solution Approach 1:
The system proactively detects audio signals from external devices before they interfere with voice recognition, and preemptively reduces their output levels. This preliminary anti-action prevents the harmful noise interference from occurring in the first place, rather than merely attempting to filter it after the fact.
Solution Approach 2:
The electronic device acts as an intermediary between external audio devices and the voice recognition system. By controlling the audio output levels of external devices through communication circuitry, it mediates the interaction between audio signals and microphone inputs, ensuring that voice recognition can proceed accurately without direct interference from external audio sources.
2Measurement precision
If audio output level of external audio devices is reduced to improve voice recognition, then voice control accuracy is enhanced, but audio output quality may be degraded
Solution Approach 1:
The audio output level control is dynamic rather than static. The system continuously monitors whether voice recognition is being performed and adjusts the audio output levels accordingly - reducing levels during voice recognition operations and maintaining normal levels during other operations. This dynamic adjustment ensures both voice control accuracy and audio output quality are optimized for their respective operational contexts.
Solution Approach 2:
The system implements periodic control of audio output levels based on operational phases. During voice recognition periods, audio output is reduced; during non-voice-recognition periods, audio output returns to normal levels. This periodic action pattern ensures that audio quality is preserved when not interfering with voice recognition, while still providing noise reduction when needed.
Data Source
AI summary
An electronic device is provided. The electronic device according to an embodiment includes a microphone, a communicator comprising communication circuitry, and a processor configured to control the communicator to transmit a control command to an external audio device for reducing an audio output level of the external audio device in response to a trigger signal for starting a voice control mode being received through the microphone and to control the electronic device to operate in the voice control mode.