Mobile Speaker Equalization for Placement-Dependent Sound Quality
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Solution Overview
Problem
Mobile device speaker performance varies significantly based on placement, leading to inconsistent sound quality due to obstruction or orientation, which existing technologies have not adequately addressed.
Innovation Solution
A context-aware speaker equalization system that uses sensors like cameras, ambient light sensors, accelerometers, and gyroscopes to determine the mobile device's placement and adjust the speaker's frequency output accordingly, applying predetermined equalization configurations to optimize sound quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If speaker equalization is fixed for a specific placement, then sound quality is optimized for that placement, but sound quality deteriorates when the device is placed differently
Solution Approach 1:
The patent applies dynamics by making the speaker equalization configuration changeable based on detected placement conditions. The system dynamically adjusts equalization parameters according to the device's orientation and speaker obstruction status, transitioning between different pre-configured equalization profiles to maintain optimal sound quality across varying placements
Solution Approach 2:
The system changes speaker equalization parameters (frequency response characteristics) based on detected placement conditions. By modifying these acoustic parameters according to the device's orientation and environment, the system maintains consistent sound quality whether the device is held upright, placed face-up, or positioned face-down
2Measurement precision
If multiple sensor types are used to detect placement, then placement detection accuracy is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple sensor types (accelerometer, gyroscope, magnetometer, ambient light sensor, proximity sensor) into an integrated placement detection system. By merging these sensors and processing their data together, the system achieves high placement detection accuracy while managing complexity through unified sensor management and coordinated data processing
Data Source
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AI summary
Disclosed is an apparatus and method for speaker equalization in a mobile device. In one embodiment, placement of a mobile device including a speaker is determined and speaker equalization is performed in accordance with the determined placement.