Auricular Beamforming for Spatial Hearing and Noise Separation
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Solution Overview
Problem
Existing hearing aids do not effectively distinguish between audio sources and background noise, and lack the ability to monitor and report physiological parameters to both patients and healthcare providers.
Innovation Solution
An auricular device equipped with an indicator and beamformer filter unit that processes audio data to determine distances and orientations, allowing it to separate audio sources and emit sounds as if they originate from specific locations, while also monitoring physiological parameters and reporting them to medical professionals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional hearing aids are used, then basic audio amplification is provided, but the ability to distinguish audio sources from background noise is insufficient
Solution Approach 1:
The hearing aid device is divided into multiple functional modules: indicator module, beamformer filter unit, audio signal processing module, and physiological monitoring module. Each module performs a specific function, allowing the system to achieve sophisticated audio source separation and physiological monitoring capabilities while maintaining manageable device complexity through modular design
Solution Approach 2:
The hearing aid is designed to perform multiple functions simultaneously: it provides audio amplification, distinguishes audio sources from background noise using beamforming, emits visual indicators, and monitors physiological parameters. This multi-functionality allows a single device to address multiple patient needs without requiring separate devices for each function
2Adaptability or versatility
If hearing aids provide basic audio amplification, then simple functionality is maintained, but real-time physiological monitoring capability is lacking
Solution Approach 1:
The hearing aid integrates physiological monitoring sensors and communication capabilities into the existing audio processing device. The device now simultaneously performs audio processing, visual indication, and physiological parameter monitoring, allowing it to adapt to diverse patient needs including hearing assistance and medical monitoring without requiring multiple separate devices
Solution Approach 2:
The external device serves as an intermediary that receives physiological data from the hearing aid and transmits it to healthcare providers. This mediator approach allows the hearing aid to collect physiological information without requiring direct connection to complex medical systems, simplifying the overall system architecture while enabling remote monitoring capabilities
3Loss of information
If the device emits audio signals, then sound transmission is achieved, but the ability to indicate audio source location is insufficient
Solution Approach 1:
The indicator module acts as an intermediary that converts audio source location information into visual signals. Instead of relying solely on auditory cues, the device uses visual indicators to communicate spatial information about audio sources, providing patients with additional sensory information to understand the direction and location of sounds in their environment
Solution Approach 2:
The signal processing is divided into distinct stages: audio input, beamforming for source separation, spatial location determination, and visual indication. This segmentation allows each processing stage to be optimized independently while maintaining overall system coherence, making the complex spatial processing manageable through modular functional blocks
Data Source
AI summary
A system may include an external device configured to transmit a first audio data to an ear-bud. A system may include the ear-bud configured to be positioned within an ear canal of a user, the ear-bud comprising: a microphone configured to generate audio data responsive to detecting audio, a storage device, configured to store computer-executable instructions; and one or more processors in communication with the storage device, wherein the computer-executable instructions, when executed by the one or more processors, cause the one or more processors to: receive the first audio data from the external device, receive a second audio data from the microphone, estimate an acoustic environment based on the first audio data and the second audio data, generate a third audio data based on the acoustic environment, and cause a speaker to emit the third audio data.