Display Audio Volume Control for Accurate Voice Recognition
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Solution Overview
Problem
Image display apparatuses face decreased voice recognition performance due to background noise interference from audio signals exceeding predetermined levels, leading to potential malfunctions.
Innovation Solution
Implementing a system that reduces the audio signal output to a predetermined level when voice recognition is initiated, using a combination of background sound cancellation and volume control to isolate user voice signals, and allowing users to generate and register command words for improved recognition rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the audio signal 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 system performs preliminary action by detecting the start of voice recognition mode and proactively adjusting the audio output volume to a predetermined level before voice recognition processing begins. This prevents background audio noise from interfering with voice signal acquisition, ensuring accurate voice recognition while maintaining good audio quality experience for users.
2Measurement precision
If the audio signal output volume is decreased to improve voice recognition, then voice recognition accuracy is improved, but audio quality deteriorates
Solution Approach 1:
The system applies dynamics by making the audio output volume adjustable and changeable based on operational mode. The volume is dynamically set to normal levels during regular audio playback and automatically adjusted to a predetermined level during voice recognition mode, then restored after recognition completes. This dynamic adjustment resolves the contradiction by providing high audio quality when needed and high voice recognition accuracy when needed.
3Measurement precision
If background sound cancellation is implemented to improve voice recognition in noisy environments, then voice recognition accuracy is improved, but device complexity increases
Solution Approach 1:
The system applies parameter changes by modifying the volume parameter of the audio output signal rather than implementing complex background sound cancellation algorithms. By simply adjusting the audio output volume to a predetermined level during voice recognition mode, the system effectively reduces background noise interference while maintaining relatively simple system architecture, thus improving voice recognition accuracy without significantly increasing device complexity.
Data Source
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AI summary
Provided are an image display apparatus (1) able to improve voice recognition performance by decreasing the volume of an audio signal output from the image display apparatus (1) to a predetermined level or less when the image display apparatus (1) recognizes user voice, and a method of controlling the same. The image display apparatus (1) enabling voice recognition includes a first voice input unit (112) to receive a user-side audio signal, an audio output unit (122) to output an audio signal processed by the image display apparatus (1), a first voice recognizer (210) to recognize the user-side audio signal received through the first voice input unit (112), and a controller (220) to decrease the volume of the audio signal output through the audio output unit (122) to a predetermined level if a voice recognition start command is received.