Bluetooth Hearing Aid Intercom for Noisy Long-Range Speech
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Solution Overview
Problem
Conventional hearing aids face challenges in maintaining effective communication, especially for hearing-impaired individuals, due to decreased sound intensity with distance, environmental noise, and reverberation, and lack of effective intercom systems for continuous communication among groups, particularly in domestic and travel scenarios.
Innovation Solution
A Bluetooth-enabled intercom system integrated with hearing aids, utilizing a microphone array and advanced signal processing to enhance communication range and clarity, especially for hearing-impaired users, allowing them to communicate effectively across different rooms or floors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If conventional hearing aids are used, then hearing assistance is provided, but communication range is limited and sound intensity decreases significantly with distance
Solution Approach 1:
The system divides the communication function into two parts: conventional hearing aids for personal hearing assistance and Bluetooth intercom devices for extended communication. This segmentation allows each component to optimize its specific function while working together to solve the overall communication range and quality problem.
Solution Approach 2:
The hearing aid system is enhanced with multi-functionality by integrating Bluetooth communication capabilities, allowing it to serve both as a traditional hearing aid and as an intercom device. This enables the system to provide both personal hearing assistance and extended range communication without requiring separate dedicated devices.
2Adaptability or versatility
If conventional hearing aids are used, then personal hearing assistance is provided, but effective intercommunication among groups is lacking
Solution Approach 1:
The patent combines hearing aid functionality with Bluetooth intercom capabilities into an integrated system. The hearing aids communicate with each other and with external Bluetooth devices, enabling group intercommunication while maintaining the simplicity of wearing only hearing aids without additional headsets or devices.
Solution Approach 2:
The hearing aids automatically establish Bluetooth connections and enable intercommunication without requiring users to manually configure complex settings. The system self-manages the communication protocols and device pairing, reducing the complexity burden on users while providing advanced intercommunication capabilities.
3Reliability
If conventional hearing aids are used, then basic hearing amplification is provided, but speech intelligibility deteriorates in noisy environments
Solution Approach 1:
The system uses feedback mechanisms where the hearing aids receive audio signals from Bluetooth-connected devices, process them through noise reduction algorithms, and provide enhanced output to the user. The feedback loop continuously adjusts the audio processing to maintain speech intelligibility despite environmental noise conditions.
Solution Approach 2:
Bluetooth technology serves as an intermediary between the external acoustic environment and the user's ear. The system captures audio signals through Bluetooth devices, processes them to remove environmental noise, and delivers cleaned audio to the hearing aids, effectively mediating the harmful noise before it reaches the user.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides enhanced communication capabilities for hearing-impaired individuals by improving speech intelligibility and maintaining connectivity even in noisy environments and over longer distances, facilitating effective communication within households and groups.
Implementation Method 1
The hearing aid devices normally include at least one microphone to transduce sound signals surrounding a user
Implementation Method 2
Bluetooth enabled intercom with hearing aid functionality
Data Source
AI summary
A hearing aid, comprising a microphone configured to produce a microphone output signal representing sounds transduced by the microphone; an earphone speaker configured to convert an equalized output electrical signal into acoustic waves; a Bluetooth wireless transceiver; and an automated processor configured to spot a plurality of different keywords; and selectively control a Bluetooth communication partner dependent on the spotted keyword.