Voice-Controlled Image Display Audio Muting for Accurate Recognition
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Solution Overview
Problem
Image display apparatuses face decreased voice recognition rates due to background noise interference, as they struggle to distinguish user voice commands from ambient audio signals.
Innovation Solution
The implementation of an image display apparatus with a voice recognition system that includes a voice inputter, audio outputter, and a controller to decrease audio signal volume to a predetermined level when a voice recognition start command is detected, and optionally employs a background sound canceller to isolate user voice signals, ensuring effective voice command recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the image display apparatus outputs audio signals at normal volume, then the audio quality and user experience are maintained, but the voice recognition rate decreases due to background noise interference
Solution Approach 1:
The system performs preliminary action by detecting the voice recognition start command before actual voice recognition occurs, and proactively decreases the audio signal volume in advance. This preliminary volume reduction eliminates background noise interference before it can degrade the voice recognition rate, while the audio output is restored after recognition completes
Solution Approach 2:
The audio signal volume is made dynamic rather than static. The controller adjusts the volume level based on the operational state: high volume during normal audio playback, and decreased volume during voice recognition operations. This dynamic adjustment resolves the contradiction by adapting the volume to the current functional requirement
2Measurement precision
If the volume of audio signal output is decreased during voice recognition, then voice recognition accuracy improves, but audio output quality deteriorates
Solution Approach 1:
The volume adjustment occurs periodically and temporarily only during the specific time window when voice recognition is performed. The system follows a periodic pattern: normal volume → decreased volume during recognition → normal volume after recognition. This periodic action ensures audio quality is maintained for the majority of time while enabling accurate voice recognition when needed
Solution Approach 2:
The volume decrease is applied preliminarily and temporarily only for the duration of voice recognition operations. After the recognition process completes, the audio signal volume is restored to its original level. This temporary preliminary adjustment ensures that audio output quality is not permanently degraded while still achieving the necessary noise reduction for accurate voice recognition
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.