Acoustic Equalizer Settings for Voice Call Audio Quality
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Solution Overview
Problem
Users of mobile telephony handsets often experience poor audio quality due to inconsistent acoustic seals, as existing handsets are designed with a single acoustic equalizer setting that fails to accommodate varying ear shapes and holding positions, leading to issues like 'boomy' or 'muddy' sound.
Innovation Solution
A method and apparatus that allow users to select from a plurality of predetermined acoustic equalizer settings, enabling the processing of voice call downlink audio based on the user's chosen setting, which can be adjusted either before or during a call, to optimize audio output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
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 varying ear shapes and holding positions
Solution Approach 1:
The patent applies the dynamics principle by enabling the acoustic equalizer settings to change from a fixed single setting to multiple selectable settings. The system allows users to dynamically switch between different EQ presets (e.g., high-leak mode, low-leak mode, and custom modes) based on their individual ear shapes and sealing conditions, thereby adapting the audio processing to match the actual acoustic environment without increasing physical device complexity
Solution Approach 2:
The patent implements parameter changes by providing users with the ability to modify acoustic equalizer parameters such as frequency response characteristics, gain settings, and filter configurations. Users can adjust these parameters through software interfaces to optimize audio quality for their specific sealing conditions, transforming the rigid fixed parameter system into a flexible user-adjustable system
2Adaptability or versatility
If multiple acoustic equalizer settings are provided, then the adaptability to different user ear shapes and holding positions improves, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the acoustic equalizer functionality into distinct, manageable presets or modes (e.g., high-leak mode for poor sealing, low-leak mode for good sealing, and custom modes). This segmentation allows users to select pre-optimized settings for different acoustic conditions without requiring them to understand or configure complex equalizer parameters manually, thereby reducing the effective complexity while maintaining high adaptability
Solution Approach 2:
The patent implements universality by designing a multi-functional acoustic equalizer system that can serve multiple user needs and sealing conditions through a single integrated software platform. The same EQ adjustment mechanism works across different handset models and acoustic scenarios, providing universal adaptability without requiring separate hardware solutions for each use case
Data Source
AI summary
A user is allowed to select an acoustic equalizer setting from among a plurality of predetermined acoustic equalizer settings. Upon receiving an indication of a selection of a given acoustic equalizer setting, a handheld telephony device processes voice call downlink audio, based on the given acoustic equalizer setting and drives an audio output device with the processed audio signal.