The Study About the Reduction of the Stimulus Artifact Using PSR Filter

Area of Science:

• Audiology
• Biomedical Engineering
• Signal Processing

Background:

• Transient Evoked Otoacoustic Emissions (TEOAEs) are crucial for assessing cochlear function.
• Stimulus artifacts in TEOAE signals obscure high-frequency cochlear responses.
• Existing methods like Derived Nonlinear Response (DNLR) have limitations in artifact removal.

Purpose of the Study:

• To introduce a novel artifact reduction technique for TEOAE signals.
• To evaluate the effectiveness of the Predictor-Subtracter-Restorer filter in minimizing stimulus artifacts.
• To assess the preservation of high-frequency TEOAE information using the proposed method.

Main Methods:

• Development of a Predictor-Subtracter-Restorer filter tailored for TEOAE signals.
• Empirical comparison of the proposed filter against the Derived Nonlinear Response (DNLR) method.
• Analysis of TEOAE signal segments, focusing on initial artifact contamination and high-frequency response detection.

Main Results:

• The proposed Predictor-Subtracter-Restorer filter significantly reduced stimulus artifacts in TEOAE recordings.
• The method successfully preserved essential TEOAE information in the high-frequency range.
• Empirical results demonstrated superior performance compared to the DNLR method in artifact reduction and information preservation.

Conclusions:

• The Predictor-Subtracter-Restorer filter offers an effective solution for TEOAE artifact reduction.
• This technique enhances the detection of high-frequency cochlear responses, improving diagnostic capabilities.
• The proposed method represents a significant advancement over existing artifact removal techniques for TEOAE analysis.