Mobile Terminal Speaker Frequency Response Adjustment
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Solution Overview
Problem
The frequency response of a mobile terminal's speaker significantly changes with different holding postures, leading to poor sound quality due to asymmetrical frequency response variations when held in one or two hands and varying orientations.
Innovation Solution
A method and system for sound processing that detects hand holding and orientation, adjusting frequency response and stereo processing accordingly through modules for posture, orientation, and interaction detection to correct the speaker's frequency response.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the mobile terminal uses fixed frequency response settings, then the device complexity is reduced, but the sound quality deteriorates when held in different postures
Solution Approach 1:
The patent implements dynamic frequency response adjustment by detecting the mobile terminal's holding posture and orientation, then automatically selecting appropriate equalization presets. The system transitions from fixed settings to adaptive settings that change based on real-time sensor data from accelerometers and gyroscopes, resolving the contradiction between system simplicity and sound quality consistency across different usage scenarios
Solution Approach 2:
The patent changes the parameters of frequency response equalization based on detected holding conditions. Different equalization curves are applied depending on whether the device is held in one-hand or two-hand mode, and whether in portrait or landscape orientation. This parameter adaptation ensures consistent sound quality without requiring complex real-time processing, balancing simplicity and performance
2Reliability
If the mobile terminal implements posture-based frequency response adjustment, then the sound quality is improved, but the device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple equalization presets for different holding scenarios (one-hand portrait, one-hand landscape, two-hand modes). Instead of implementing complex real-time frequency analysis, the system pre-processes the equalization curves and simply selects the appropriate preset based on sensor input, reducing computational complexity while maintaining sound quality
Solution Approach 2:
The patent implements feedback through sensor-based detection of holding posture and orientation, which feeds back to the audio processing system to trigger appropriate equalization adjustments. This closed-loop approach uses simple accelerometer and gyroscope data to automatically adjust frequency response, improving sound quality without requiring complex user intervention or analysis
Data Source
AI summary
Provided is a method and system of sound processing for a mobile terminal based on hand-holding and orientation detection. The method includes: detecting whether the mobile terminal is held by hand; in response to determination of the mobile terminal being held by hand, detecting whether it is one-hand holding or two-hand holding; in response to determination of one-hand holding, detecting whether it is landscape holding or portrait holding, and conducting corresponding frequency response equalization and stereo processing control; and in response to determination of two-hand holding, determining whether the mobile terminal is in an interaction procedure, and conducting corresponding frequency response equalization and stereo processing control. Compared with the related art, the problem that frequency response of the speakers of existing mobile terminals significantly changes with different holding postures that may eventually lead to poor sound quality is solved, to provide more consistent speaker sound quality in real life.