Adaptive Playback Volume Control for Changing Background Noise
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Solution Overview
Problem
Existing audio playback devices require numerous user inputs to achieve a desired volume, as they typically have fixed increments between minimum and maximum volumes, failing to adapt seamlessly to changing background noise levels.
Innovation Solution
Incorporating a device with a digital amplifier for coarse volume adjustments and an analog amplifier for finer adjustments, using microprocessors to determine background noise levels and adjust playback volume in smaller increments, allowing automatic progressive transitions without user input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed volume increments are used in a volume table, then the device structure remains simple, but the user must provide numerous inputs to achieve desired volume, reducing ease of operation
Solution Approach 1:
The patent applies dynamics by transitioning from static fixed volume increments to dynamic adaptive increments. The system continuously monitors background noise levels and automatically adjusts volume increment sizes in real-time, allowing the volume adjustment behavior to adapt to changing environmental conditions without requiring manual user intervention for each adjustment
Solution Approach 2:
The system implements self-service by automatically detecting background noise levels and autonomously determining appropriate volume adjustments without user input. The processor continuously monitors the acoustic environment and self-adjusts playback volume based on detected noise characteristics, eliminating the need for users to manually control volume in response to environmental changes
2Ease of operation
If the device automatically adjusts volume based on background noise, then ease of operation improves, but device complexity increases due to additional sensors and processing
Solution Approach 1:
The patent applies universality by enabling the existing microphone and processor to perform multiple functions: they serve both for audio playback processing and for background noise level detection. This multi-functionality allows automatic volume adjustment without requiring dedicated separate hardware components, thereby limiting the increase in device complexity
Solution Approach 2:
The system implements parameter changes by dynamically modifying volume adjustment parameters based on detected background noise characteristics. The processor analyzes noise level parameters and automatically adjusts playback volume parameters in response, creating an adaptive system that responds to environmental changes without fixed predetermined settings
3Adaptability or versatility
If volume adjustments use large fixed increments, then device complexity remains low, but adaptability to changing noise environments deteriorates
Solution Approach 1:
The patent applies dynamics by making volume increment sizes variable rather than fixed. The system dynamically adjusts the magnitude of volume changes based on real-time background noise level detection, allowing larger adjustments when noise levels change significantly and smaller adjustments during stable conditions, thereby achieving adaptability without rigid predetermined increment values
Data Source
AI summary
The present disclosure provides systems and methods for progressively transitioning the playback volume based on a background noise level. The device may have a predetermined quantity of volume levels between a minimum volume and a maximum volume. The volume levels may be spaced by predetermined increments, such that there is a predefined difference between adjacent volume levels. A digital gain may be used to adjust the volume level and an analog gain may allow for the playback volume to be adjusted to an amount between adjacent volume levels. The playback volume may progressively transition within the predefined volume levels by an amount less than the predetermined difference between adjacent volume levels. This smaller amount may be the analog gain.