Bluetooth Headset Audio Compensation for Frequency-Specific Hearing Loss

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Solution Overview

Problem

Users experience unclear and muffled voices during prolonged Bluetooth headset calls due to individual hearing losses at specific frequency points, affecting the call experience.

Innovation Solution

A Bluetooth headset with a pair of earphone components that acquire monaural hearing loss curves for each ear, compensating the audio signal based on these curves to enhance audio clarity and personalize the audio experience.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If standard audio signal transmission is used in Bluetooth headset, then device complexity is low, but audio clarity and call experience deteriorate due to hearing loss at different frequency points

Engineering Contradiction:
Improveaudio clarityVSAvoiddevice complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system performs a hearing loss test before actual audio transmission to obtain the user's hearing loss curve in advance. This preliminary action allows the system to pre-process audio signals by compensating for detected hearing losses at different frequency points, ensuring clear audio output without requiring complex real-time adjustments during calls

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system implements a feedback mechanism where the hearing loss test results are used to adjust audio signal processing parameters. The hearing loss curve obtained from user feedback during the test is continuously applied to compensate audio signals, creating a closed-loop system that adapts to the user's specific hearing characteristics

Inventive Principle:
Principle #23Feedback

2Adaptability or versatility

If personalized audio compensation is implemented based on hearing loss curves, then auditory experience is improved, but device complexity and processing requirements increase

Engineering Contradiction:
Improvepersonalized audio compensationVSAvoidprocessing complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system changes audio signal parameters (frequency response, gain levels) based on the user's hearing loss curve. By adjusting these parameters according to detected hearing losses at different frequency points, the system provides personalized compensation that adapts to individual user needs without requiring complete system redesign

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The audio frequency spectrum is segmented into multiple frequency points for independent analysis and compensation. The hearing loss test measures losses at discrete frequency points, and compensation is applied separately to each frequency band, allowing precise targeted correction without processing the entire spectrum as a single complex operation

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP4626022A1Audio compensation method for bluetooth headset, bluetooth headset and computer-readable storage medium
Publication Date: 2025.10.01 HARMAN INT IND INC
  • EP4626022A1 patent drawingFigure 1
  • EP4626022A1 patent drawingFigure 2
  • EP4626022A1 patent drawingFigure 3

AI summary

Disclosed are an audio compensation method and device for a Bluetooth headset, a Bluetooth headset, and a computer-readable storage medium, wherein the Bluetooth headset comprises a pair of earphone components corresponding to both ears of a user respectively, and the method comprises: acquiring a monaural hearing loss curve corresponding to each ear of the user; wherein the monaural hearing loss curve corresponding to each ear of the user is generated based on a monaural hearing loss test of the corresponding ear of the user; acquiring an original audio signal of the Bluetooth headset at the current moment; compensating the original audio signal of the Bluetooth headset at the current moment based on the monaural hearing loss curve corresponding to each ear of the user to generate a compensated audio signal.