Ring Microphone Earbud Layout for Sound Localization and Transparency
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Solution Overview
Problem
Conventional ear-mounted listening devices, such as headphones and hearing aids, are not designed for all-day wear and often fail to accurately reproduce environmental cues, making it difficult for users to localize sounds, and their monolithic designs are not easily customizable or repairable.
Innovation Solution
An ear-mountable listening device with a modular design featuring an array of microphones in a ring pattern, a main circuit board with a central hole for compact speaker orientation, and a soft ear interface for comfort and sealing, allowing for customizable fit and easy replacement of components, along with advanced noise cancellation and sound localization capabilities using machine learning and acoustical beamforming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If monolithic designs are used for ear-mountable listening devices, then manufacturing is simplified, but adaptability to end users is reduced and repairability becomes difficult
Solution Approach 1:
The device is divided into separate modular components including a housing module, electronics module, and ear tip module that can be independently manufactured, assembled, and replaced. This segmentation enables both simplified manufacturing of individual modules and easy customization by swapping different module combinations for different user needs.
2Device complexity
If monolithic designs are used for ear-mountable listening devices, then device structure is simplified, but ease of repair deteriorates requiring entire device replacement
Solution Approach 1:
The listening device is segmented into replaceable modules (housing module, electronics module, ear tip module) connected through standardized interfaces. This allows individual modules to be replaced without replacing the entire device, significantly improving repairability while maintaining overall structural simplicity through standardized connection mechanisms.
3Reliability
If headphones block outside noises to provide immersive audio experience, then audio quality is improved, but ability to hear external world deteriorates requiring device removal
Solution Approach 1:
The device incorporates dynamic noise control that can switch between different modes (noise isolation, transparency mode, hybrid mode) allowing users to adjust the level of external sound blocking in real-time. This dynamic adaptability maintains high audio quality when needed while allowing external sound access when required, eliminating the need to remove the device.
Solution Approach 2:
The device uses active noise cancellation technology as an intermediary mechanism that generates anti-noise waves to cancel unwanted external sounds. This allows the device to provide immersive audio experience by blocking outside noises when needed, while transparency mode can allow external sounds to pass through when the user needs to hear the external world.
4Reliability
If hearing aids amplify environmental sounds to assist hearing loss, then hearing assistance is improved, but accuracy of environmental cue reproduction deteriorates affecting sound localization
Solution Approach 1:
The device uses an array of multiple microphones segmented and positioned at different locations and orientations. This spatial segmentation allows the system to capture environmental sounds from multiple perspectives, preserving directional information and environmental cues while providing amplification, thereby maintaining accurate sound localization capability.
Solution Approach 2:
The microphone array is arranged in three-dimensional space around the ear canal entrance, capturing sound from multiple spatial dimensions. This dimensional approach preserves environmental cues and spatial information while providing hearing amplification, enabling accurate sound localization that traditional single-microphone hearing aids cannot achieve.
Data Source
AI summary
An ear-mountable listening device includes an array of microphones physically arranged into a ring pattern to capture sounds from an environment and output first audio signals that are representative of the sounds captured by the microphones. A speaker is arranged to emit audio into an ear in response to a second audio signal. Electronics are coupled to the array of microphones and the speaker and configured to capture the sounds with the array of microphones to generate the first audio signals and generate the second audio signal that drives the speaker based upon one or more of the first audio signals.