Headset Equalizer Selection for Variable Voice Call Acoustics
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Solution Overview
Problem
Mobile phone handsets face challenges in maintaining consistent acoustic quality due to varying ear shapes and holding positions, leading to issues like poor audio quality, as existing designs often default to a single acoustic equalizer setting that may not suit all users.
Innovation Solution
A user interface on mobile devices allows users to select from predetermined acoustic equalizer settings for voice calls, enabling them to adjust settings during ongoing calls to optimize audio quality based on their specific conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single acoustic equalizer setting is used in the handset, then the device complexity is reduced and manufacturing is simplified, but the audio quality deteriorates for users with different ear shapes and holding positions
Solution Approach 1:
The acoustic equalizer setting is made dynamic and adjustable by the user during calls. The system provides multiple predetermined EQ settings (e.g., bass boost, treble boost, flat) that users can switch between based on their ear shape and holding position, transforming a static single setting into a flexible multi-setting system that adapts to individual users without requiring complex automatic adjustment mechanisms.
Solution Approach 2:
The system changes the acoustic equalizer parameters by providing multiple predetermined settings that modify frequency response characteristics. Instead of a fixed single EQ curve, the system offers different parameter configurations (bass boost, treble boost, flat) that can be selected based on user needs, allowing optimization of audio quality for different ear shapes and holding positions without redesigning the entire acoustic system.
2Device complexity
If the handset is designed with a fixed acoustic equalizer setting optimized for a specific ear model, then the acoustic seal design is simplified, but the adaptability to different user ear shapes and holding positions deteriorates
Solution Approach 1:
The system introduces dynamic adjustability to the acoustic equalizer, allowing users to switch between multiple predetermined settings during calls. This dynamic feature enables the system to adapt to different ear shapes and holding positions without requiring a complex redesign of the acoustic seal or multiple physical devices, maintaining simplicity while improving adaptability.
Solution Approach 2:
The acoustic equalizer system is designed with multi-functionality by incorporating multiple predetermined settings (bass boost, treble boost, flat) that can serve different user needs. This universal approach allows a single handset design to accommodate various ear shapes and holding positions through software-based EQ adjustment, eliminating the need for multiple specialized devices or complex hardware variations.
3Reliability
If multiple acoustic equalizer settings are provided for users to select, then the audio quality improves for different ear shapes and holding positions, but the ease of operation and user interface complexity increases
Solution Approach 1:
The acoustic equalizer settings are segmented into distinct predetermined options (bass boost, treble boost, flat) rather than providing a continuous or complex adjustment interface. This segmentation simplifies user interaction by presenting clear, discrete choices that are easy to understand and select, reducing interface complexity while maintaining audio quality optimization for different ear shapes and holding positions.
Solution Approach 2:
The system enables users to self-adjust their acoustic equalizer settings based on their personal preferences and hearing conditions. By providing intuitive predetermined options that users can select independently, the system empowers users to optimize audio quality for themselves without requiring technical expertise or complex automatic adjustment mechanisms, maintaining ease of operation while improving audio quality.
Data Source
AI summary
A method of providing a user interface on a mobile device for enabling a user to select acoustic equalizer settings for voice call downlink audio signals, the mobile device including an internal microprocessor, a display in communication with the microprocessor, and at least one input means in communication with the microprocessor, the method including receiving a request from the user for displaying the user interface, in response to the request, displaying the user interface on the display, the user interface including a plurality of predetermined acoustic equalizer settings, wherein the user selects one of the equalizer settings using the input means, receiving the selected equalizer setting at the microprocessor, storing the selected equalizer setting at the microprocessor, and processing the voice call downlink audio signals according to the selected equalizer setting.