Hearing System Directional Signal Processing for Multi-Speaker Adaptation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hearing systems struggle to effectively support individuals with hearing impairments in complex conversation situations involving multiple interlocutors, often resulting in inadequate accentuation of individual conversation contributions and an unnatural background sound.
Innovation Solution
A method for directional signal processing in hearing systems that determines the number of interlocutors based on input signals from electroacoustic transducers, modifying compression, directional microphony, and noise suppression accordingly to generate a targeted output signal that enhances speech intelligibility while maintaining a natural background.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional hearing systems process audio signals with fixed compression and noise suppression parameters, then the device complexity is reduced, but the speech intelligibility in complex conversation situations deteriorates
Solution Approach 1:
The patent implements dynamic adjustment of compression ratios and noise suppression parameters based on real-time detection of the number of interlocutors. The system transitions from static to dynamic processing by monitoring acoustic characteristics and automatically modifying processing parameters to match the conversational context, thereby improving speech intelligibility without requiring manual intervention.
Solution Approach 2:
The system changes processing parameters (compression ratio, noise suppression level) according to the detected number of speakers. When one speaker is detected, stronger compression and noise suppression are applied; when multiple speakers are detected, the processing parameters are adjusted to preserve natural background sounds while maintaining speech intelligibility.
2Reliability
If strong compression and noise suppression are applied to accentuate individual speech contributions, then speech intelligibility improves, but the background sound becomes unnatural
Solution Approach 1:
The patent applies different processing qualities to different acoustic components. Speech signals from identified interlocutors receive strong compression and noise suppression for intelligibility, while background sounds maintain their natural characteristics. This localized differentiation of processing quality allows simultaneous optimization of speech clarity and background naturalness.
Solution Approach 2:
The system dynamically adjusts the strength of compression and noise suppression based on the number of detected interlocutors. When multiple speakers are present, the system reduces the intensity of processing to preserve natural background sounds, while still providing sufficient accentuation for intelligibility.
3Adaptability or versatility
If the hearing system processes audio without considering the number of interlocutors, then the ease of operation is improved, but the adaptability to complex conversation situations deteriorates
Solution Approach 1:
The hearing system performs self-adjustment by automatically detecting the number of interlocutors and modifying processing parameters accordingly. The system monitors acoustic characteristics, identifies the number of speakers, and autonomously adjusts compression and noise suppression settings without requiring user input or manual configuration, thereby maintaining ease of operation while achieving high adaptability.
Solution Approach 2:
The system incorporates feedback loops that continuously monitor the acoustic environment, detect the number of interlocutors, and adjust processing parameters in real-time. This closed-loop control enables the system to adapt to changing conversation situations while maintaining simple operation for 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 method significantly improves speech intelligibility in complex conversation situations by accurately identifying the number of interlocutors and adjusting signal processing parameters, thereby reducing the effort required by individuals with hearing impairments to follow conversations and maintaining a natural background sound.
Implementation Method 1
a first input signal is generated from an ambient sound by an electroacoustic first input transducer of the first hearing instrument, and a second input signal is generated by an electroacoustic second input transducer of the hearing system
Data Source
AI summary
A method for directional signal processing for a hearing system having at least a first hearing instrument. A first input signal is generated from an ambient sound by an electroacoustic first input transducer of the first hearing instrument, and a second input signal is generated by an electroacoustic second input transducer of the hearing system. A number of interlocutors of a wearer of the hearing system is determined on the basis of the first input signal and on the basis of the second input signal. At least a compression and/or a directional microphony and/or a noise suppression is/are modified in the processing of the first input signal and/or the second input signal depending on the determined number of interlocutors, and a first output signal is thereby generated.