Audio Volume Leveling with Real-Time Content-Adaptive Gain Control
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Solution Overview
Problem
Existing audio processing systems require manual preset selection for different audio content types, leading to inconvenient user experience and potential audible artifacts during transitions, as they lack continuous adjustment capabilities based on real-time content identification.
Innovation Solution
An audio processing apparatus and method that includes an audio classifier to identify audio types in real-time and an adjusting unit to continuously adjust audio improving devices such as dialog enhancers, surround virtualizers, volume levelers, and equalizers based on confidence values, enabling automatic configuration and smooth parameter adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual preset selection is used for different audio content types, then the system can apply appropriate processing algorithms, but the user experience becomes inconvenient and audible artifacts may occur during transitions
Solution Approach 1:
The patent implements dynamic adjustment of audio processing parameters by continuously analyzing audio content characteristics and automatically adapting processing algorithms in real-time, eliminating the need for manual preset selection while maintaining optimal audio quality across different content types
Solution Approach 2:
The system incorporates feedback mechanisms that continuously monitor audio content type and processing effectiveness, using this information to automatically adjust processing parameters and prevent audible artifacts during transitions between different audio content
2Device complexity
If discrete parameters are used in presets, then the system can be simplified, but continuous adjustment capability is lost leading to audible artifacts
Solution Approach 1:
The patent transforms discrete preset parameters into continuously adjustable parameters by implementing real-time analysis of audio content characteristics, allowing smooth transitions between different processing states and eliminating audible artifacts while maintaining system simplicity through automated control
Data Source
AI summary
Volume leveler controller and controlling method are disclosed. In one embodiment, A volume leveler controller includes an audio content classifier for identifying the content type of an audio signal in real time; and an adjusting unit for adjusting a volume leveler in a continuous manner based on the content type as identified. The adjusting unit may configured to positively correlate the dynamic gain of the volume leveler with informative content types of the audio signal, and negatively correlate the dynamic gain of the volume leveler with interfering content types of the audio signal.