Hearing Aid Fitting via Statistical Analysis of Life Sounds
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Solution Overview
Problem
Fitting hearing aids with 'life sounds' from actual user environments is challenging due to non-standardized statistical distributions and lack of transparency in automated adaptive functions, making it difficult for fitters to assess and adapt settings effectively.
Innovation Solution
A method and system that involve providing a sound recording from the user's environment, modifying the input signal based on preselected parameters, performing statistical analysis in at least one frequency band, and displaying graphical representations of the results to help fitters adjust settings and understand the hearing aid's performance, with continuous analysis and updating to prevent old data from masking information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If standardized sound recordings are used for fitting, then the fitting process is simple and standardized, but the hearing aid cannot be adapted to the user's actual sound environments
Solution Approach 1:
The patent introduces a fitting computer as an intermediary between the hearing aid and the fitter. This computer automatically analyzes life sound recordings, performs statistical analysis, and provides guidance to the fitter, thereby mediating the complexity of adapting to actual sound environments while keeping the fitting process manageable.
Solution Approach 2:
The system enables self-service by allowing the hearing aid to automatically analyze and adapt to life sound recordings. The hearing aid performs statistical analysis of the recorded sounds and automatically adjusts parameters, reducing the need for manual fitter intervention and enabling adaptation to actual sound environments without increasing fitting complexity.
2Adaptability or versatility
If life sounds are used for fitting, then better adaptation to user environments is achieved, but the non-standardized statistical distributions make assessment difficult
Solution Approach 1:
The patent transforms life sound recordings into standardized statistical parameters through automated analysis. The fitting computer extracts meaningful parameters from the non-standardized life sounds, such as noise levels, speech characteristics, and frequency distributions, converting them into standardized metrics that enable accurate assessment and comparison.
Solution Approach 2:
The patent replaces manual assessment methods with automated computer-based statistical analysis. Instead of relying on the fitter's subjective evaluation of life sounds, the system uses automated algorithms to perform spectral analysis, calculate statistical distributions, and provide objective measurements, thereby improving assessment accuracy for non-standardized sound environments.
3Productivity
If automated adaptive functions are used, then hearing aid performance is optimized, but transparency and understandability for fitters is reduced
Solution Approach 1:
The patent implements feedback by having the hearing aid automatically analyze life sound recordings and provide statistical results back to the fitter. The system feeds information about the actual sound environment back to the fitting process, enabling the fitter to understand what the hearing aid is experiencing and how automated functions are performing, thereby maintaining transparency while achieving optimization.
Solution Approach 2:
The fitting computer serves as an intermediary that translates the complex operations of automated adaptive functions into understandable information for the fitter. It monitors the hearing aid's automated functions, analyzes their performance on life sounds, and presents results in a comprehensible format, bridging the gap between automated optimization and fitter understanding.
4Measurement precision
If statistical analysis is performed on life sounds, then accurate representation of hearing aid performance is achieved, but old data may mask new information
Solution Approach 1:
The patent applies preliminary action by resetting the statistical analysis whenever parameters are changed during fitting. Before analyzing new life sound data with modified parameters, the system clears previous statistical accumulations, ensuring that new information is not masked by old data. This preliminary reset action maintains measurement precision throughout the iterative fitting process.
Solution Approach 2:
The patent implements dynamic statistical analysis that adapts to parameter changes. The system dynamically resets and recalculates statistics based on current parameters, allowing the analysis to evolve with each adjustment. This dynamic approach ensures that the statistical representation remains accurate and reflects only the most recent parameter settings, preventing old data from masking new information.
Data Source
AI summary
A method for use in the fitting of a hearing aid comprises the steps of providing a sound recording of a user environment, feeding the sound recording to the hearing aid as a sound input signal (8a), processing the sound input signal according to a scheme defined by preselected settings of a number of parameters so as to provide a processed signal (8b), adjusting the setting of at least one parameter, performing a statistical analysis of the magnitude of the processed signal or of the input signal in at least one frequency band, which statistical analysis is reset when a parameter is adjusted during the fitting, and displaying a graphical representation (10, 11) of the results of said statistical analysis. The invention also provides a system for fitting a hearing aid and a hearing aid.