Voice-Controlled Image Display Audio Muting for Accurate Recognition
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Solution Overview
Problem
The issue of decreased voice recognition performance in image display apparatuses due to background noise and audio signal interference, particularly when the volume of background sound or audio output exceeds a certain level, is addressed.
Innovation Solution
The image display apparatus includes a first voice inputter to receive user audio, an audio outputter to process audio, a first voice recognizer to analyze the user audio, and a controller that reduces the audio output volume to a predetermined level upon receiving a voice recognition start command, optionally incorporating a background sound canceller to reduce background noise and a command word generator to optimize voice recognition commands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the audio output volume is increased to provide better audio experience, then audio quality is improved, but voice recognition accuracy deteriorates due to background noise interference
Solution Approach 1:
The patent applies dynamics by making the audio output volume adjustable and time-variable. The system dynamically changes the volume level based on the operational state - maintaining high volume during normal playback and automatically reducing it during voice recognition operations. This dynamic adjustment resolves the contradiction by allowing the system to optimize for audio quality when needed and for voice recognition accuracy when voice input is required.
Solution Approach 2:
The patent implements periodic action through the cyclic switching between different volume states. The audio output alternates between high-volume playback mode and low-volume voice recognition mode based on user interaction and system state. This periodic switching allows the system to periodically optimize for either audio quality or voice recognition accuracy depending on the current operational phase.
2Measurement precision
If background sound volume is reduced to improve voice recognition, then voice recognition accuracy is improved, but audio output quality deteriorates
Solution Approach 1:
The system dynamically adjusts background sound volume based on the operational context. During voice recognition operations, the background sound volume is automatically reduced to minimize interference and improve recognition accuracy. During normal audio playback, the background sound returns to its original volume level to maintain audio quality. This dynamic adjustment resolves the contradiction between voice recognition accuracy and audio output quality.
3Ease of operation
If voice recognition is enabled to allow hands-free operation, then ease of operation is improved, but reliability deteriorates due to false recognition from background noise
Solution Approach 1:
The patent applies preliminary action by proactively reducing the audio output volume before voice recognition begins. This preventive measure eliminates background noise interference in advance, ensuring that the voice recognition process operates in a clean acoustic environment. By taking this preliminary action, the system maintains high reliability for hands-free operation without suffering from false recognition caused by background noise.
Data Source
AI summary
Provided are an image display apparatus and a method of controlling the same. The image display apparatus enabling voice recognition includes: a first voice inputter which receives a user-side audio signal; an audio outputter which outputs an audio signal processed by the image display apparatus; a first voice recognizer which recognizes the user-side audio signal received through the first voice inputter; and a controller which decreases a volume of the audio signal output through the audio outputter to a predetermined level if a voice recognition start command is received.