Hearing Device Steering AI Training with Mixed Speech-Noise Data
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Solution Overview
Problem
Conventional machine learning algorithms for hearing devices are not effectively configured for steering in real-world environments, leading to suboptimal sound processing and hearing performance in noisy conditions.
Innovation Solution
The development of systems and methods for training machine learning algorithms using datasets generated from mixed signals of noise and speech recordings, allowing for context, source, and acoustic analysis to enhance the hearing device's ability to focus on target sound sources and reduce noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional machine learning algorithms are used for hearing device steering, then the device can process sound signals, but the processing effectiveness is suboptimal in noisy real-world environments
Solution Approach 1:
The patent applies preliminary action by generating and using synthetic acoustic datasets before deploying the hearing device in real-world noisy environments. The system pre-trains machine learning models using mixed speech and noise recordings created in controlled conditions, allowing the algorithm to learn optimal steering behavior in advance. This pre-training approach enables the device to handle real noisy scenarios more effectively without requiring extensive real-world data collection.
Solution Approach 2:
The patent employs copying by creating synthetic representations of real-world acoustic environments. Instead of relying solely on actual recorded noisy scenarios, the system generates artificial acoustic datasets that replicate the statistical and spectral characteristics of real noisy environments. These synthetic copies are used to train the machine learning models, providing a scalable and controlled training approach that mimics diverse real-world conditions.
2Reliability
If machine learning algorithms are trained with more diverse datasets, then hearing performance improves, but data processing complexity increases
Solution Approach 1:
The patent replaces mechanical data collection methods with computational synthesis. Instead of physically recording diverse acoustic scenarios across multiple environments and conditions, the system uses computational algorithms to generate synthetic acoustic datasets. This substitution of mechanical recording processes with computational generation reduces the logistical complexity of data collection while maintaining dataset diversity through algorithmic variation of acoustic parameters.
Solution Approach 2:
The patent applies parameter changes by systematically varying acoustic parameters in synthetic dataset generation. The system modifies parameters such as noise levels, speech directions, reverberation characteristics, and signal-to-noise ratios to create diverse training scenarios. This parametric approach allows comprehensive coverage of acoustic variations without requiring proportional increases in physical data collection resources, managing complexity through controlled parameter manipulation.
Data Source
AI summary
An exemplary method includes a processor obtaining a first dataset comprising a plurality of recordings each comprising different background noise, obtaining a second dataset comprising a plurality of recordings each comprising speech audio, mixing recordings included in the first dataset with recordings included in the second dataset to generate an acoustic dataset comprising mixed signals, and performing, based on the acoustic dataset, an operation with respect to a machine learning algorithm used by a hearing device to represent sound to a user.


