Display Audio Volume Compensation for Consistent Sound Output
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Solution Overview
Problem
Existing display apparatuses struggle to maintain consistent audio volume levels across varying input content, leading to inconsistent sound output.
Innovation Solution
A display apparatus and method that adjusts audio output volume by determining a threshold volume based on a first average volume and a compensation value, using processors to control the audio output device to maintain a constant volume level.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the audio output device outputs sound directly from content data without volume adjustment, then the audio processing is simple and fast, but the output volume varies inconsistently with different input content
Solution Approach 1:
The system performs preliminary volume measurement by calculating average volumes over first and second reference times before final volume adjustment. This preliminary action establishes a baseline threshold volume that guides subsequent volume control operations, ensuring consistent audio output without complex real-time processing.
Solution Approach 2:
The system implements feedback control by continuously monitoring the volume of output sound and comparing it against the threshold volume. Based on this feedback, the audio output device dynamically adjusts its volume level to maintain consistency. The compensation value calculated from volume differences is fed back to modify subsequent output, creating a closed-loop control system.
2Reliability
If the system adjusts volume frequently to maintain constant output, then audio volume consistency is improved, but the processing time and computational load increase
Solution Approach 1:
The system performs volume measurement and adjustment operations periodically based on predetermined reference times rather than continuously. By measuring average volumes over specific time intervals (first and second reference times) and adjusting at these periodic intervals, the system maintains audio consistency while reducing unnecessary processing operations and computational overhead.
3Reliability
If the threshold volume is set high to accommodate loud content, then loud content is reproduced well, but quiet content becomes inaudible or loses detail
Solution Approach 1:
The system dynamically changes the volume parameter based on the measured characteristics of the input content. By calculating the threshold volume from the actual content's average volume and applying compensation values, the system adapts the output volume parameter to suit different content types - ensuring quiet content remains audible while preventing loud content from distorting, thereby maintaining audio quality precision across varying input levels.
Data Source
AI summary
A display apparatus includes a content receiver configured to receive content data from a content source; an audio output device configured to output a sound corresponding to the content data; one or more processors; and memory storing instructions, wherein the instructions, when executed by the one or more processors, cause the display apparatus to determine a threshold volume based on a first average volume of the sound that is output by the audio output device for a first reference time; determine a compensation value based on a second average volume of the sound that is output by the audio output device for a second reference time; and control the audio output device to adjust a volume of the sound that is output based on the threshold volume and the compensation value.