Audio Signal Processing with Dynamic Volume-Based Gain Control
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Solution Overview
Problem
Conventional audio signal processing methods degrade sound quality and cause distortion when increasing volume, as they apply fixed audio parameters regardless of volume level, leading to noise and saturation issues.
Innovation Solution
An audio signal processing method that checks property information of an audio signal and applies different processing techniques based on specific conditions, using a first process when certain conditions are met and a second process when others are met, to optimize volume and quality output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If excessive gain is applied to increase the volume of audio, then the volume increases, but noise increases and saturation occurs at the peak frequency
Solution Approach 1:
The patent applies dynamic audio parameter adjustment based on volume level detection. Different audio parameters (gain, compression, filtering) are selectively applied depending on whether the audio is at maximum volume or lower volume levels, making the processing dynamic rather than static to avoid noise and saturation issues
Solution Approach 2:
The patent changes audio processing parameters based on the detected volume level. At maximum volume, specific parameters are applied to prevent distortion, while at lower volumes, different parameters are used to maintain quality without excessive processing, directly addressing the noise and saturation problem
2Object-affected harmful factors
If audio parameters are restricted in a predetermined frequency band to control sound vibration, then sound vibration is restricted, but tone quality changes
Solution Approach 1:
The patent applies frequency band filtering selectively based on volume level. At maximum volume, filtering in predetermined frequency bands is applied to control sound vibration and prevent distortion. At lower volume levels, this filtering is reduced or removed to preserve natural tone quality, thus applying local quality control only where and when needed
3Device complexity
If a fixed audio parameter is applied to an audio signal regardless of volume level, then the processing is simple, but sound distortion occurs
Solution Approach 1:
The patent implements dynamic parameter selection based on detected audio volume level. The system detects whether the audio is at maximum volume or lower volume and automatically selects appropriate processing parameters, moving from fixed to dynamic processing to prevent sound distortion while maintaining reasonable system complexity
Data Source
AI summary
An audio processing method and an electronic device for supporting the same are provided. The audio signal processing method includes checking property information of an audio signal in response to a request for playing the audio signal; processing, when property information fulfills a first condition, the audio signal using the first method and, when the property information fulfills a second condition, the audio signal using the second method; and outputting the audio signal processed using one of the first and second methods through a speaker.