Hearing System Signal Processing Language Adaptation
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Solution Overview
Problem
Existing methods for setting the signal processing of hearing systems are complex and time-consuming, requiring multiple adjustments and lacking an efficient way to account for language-specific differences in sound distribution and frequency, which can impact speech intelligibility.
Innovation Solution
A method that involves an initial setting of signal processing parameters in a test group of hearing systems, followed by a final setting derived from changes in parameter settings, with a change vector analysis that considers language indicators to determine a center of gravity of change, which is then used to adjust subsequent hearing systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple adjustments are performed to optimize signal processing parameters, then speech intelligibility is improved, but the time required for setup increases
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing optimal signal processing parameters for different language scenarios before actual use. The system includes a database of pre-optimized parameters that can be quickly retrieved and applied, eliminating the need for time-consuming real-time adjustments while maintaining high speech intelligibility across different linguistic contexts
Solution Approach 2:
The patent implements parameter changes by dynamically selecting and adjusting signal processing parameters based on detected language characteristics. The system modifies parameters such as frequency emphasis, compression ratios, and equalization curves to match the specific language being processed, thereby optimizing speech intelligibility without requiring manual reconfiguration
2Reliability
If language-specific adjustments are made to account for sound distribution differences, then speech intelligibility is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by implementing language-specific signal processing characteristics tailored to the acoustic properties of different languages. Instead of using a uniform processing approach, the system adjusts frequency emphasis, compression, and equalization parameters locally for each language type, thereby optimizing speech intelligibility for specific linguistic contexts while managing overall system complexity through modular design
Solution Approach 2:
The patent uses copying by storing pre-optimized signal processing parameter sets for different languages in a database. Rather than calculating optimal parameters in real-time, the system retrieves and applies pre-computed parameter copies that match the detected language, reducing computational complexity while maintaining language-specific optimization benefits
3Device complexity
If standardized initial settings are used for all hearing systems, then device complexity is reduced, but language-specific optimization is lost
Solution Approach 1:
The patent implements universality by creating a multi-functional parameter selection system that can handle multiple languages and hearing scenarios through a single integrated framework. The system uses a universal database structure and decision-making algorithm that adapts to different language requirements, thereby maintaining low device complexity while achieving language-specific optimization through programmable parameter adjustment
Data Source
AI summary
Hearing systems have at least one hearing instrument which is parameterizable by means of a plurality of signal processing parameters. An initial setting of the signal processing parameters is performed in a test group of hearing systems and a final setting is derived after single or multiple changing of the parameter setting. A change vector in the parameter space is determined from the difference between the final setting and the initial setting. A language indicator characterizing a specific language is assigned to each change vector. From change vectors which are assigned to the same language or a language group a center of gravity of the change vectors in the parameter space is determined as the center of gravity of change. The center of gravity of change is used for a subsequent setting of the hearing systems in the test group or a further hearing system.