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Related Concept Videos

Hearing01:31

Hearing

When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
Expected Frequencies in Goodness-of-Fit Tests01:19

Expected Frequencies in Goodness-of-Fit Tests

A goodness-of-fit test is conducted to determine whether the observed frequency values are statistically similar to the frequencies expected for the dataset. Suppose the expected frequencies for a dataset are equal such as when predicting the frequency of any number appearing when casting a die. In that case, the expected frequency is the ratio of the total number of observations (n) to the number of categories (k).
Auditory Perception01:17

Auditory Perception

The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the cochlea, a...

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A Low Cost Setup for Behavioral Audiometry in Rodents
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Optimized Active Noise Cancellation for Hearing Tests Using Auditory Masking Characteristics.

Hsiu-Lien Cheng1, Ying-Hui Lai2, Po-Hsun Huang3

  • 1Department of Otolaryngology-Head and Neck SurgeryTaipei Veterans General Hospital Taipei Taiwan.

IEEE Journal of Translational Engineering in Health and Medicine
|January 8, 2026
PubMed
Summary
This summary is machine-generated.

Environmental noise interferes with hearing tests. An optimized active noise cancellation (ANC) technique improves hearing test accuracy in noisy settings, enabling reliable self-administered hearing assessments outside the clinic.

Keywords:
Active noise cancellationhearing testnoise controlnoisy environment

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Area of Science:

  • Audiology
  • Acoustics
  • Biomedical Engineering

Background:

  • Environmental noise significantly degrades the accuracy of self-administered hearing tests.
  • Reliable hearing threshold measurements in everyday environments require effective noise control solutions.

Purpose of the Study:

  • To introduce and evaluate an optimized active noise cancellation (ANC) technique tailored to auditory masking characteristics.
  • To enhance the reliability of self-administered hearing tests in noisy environments.

Main Methods:

  • Implementation of the ANC technique in a mobile hearing test system with calibrated true wireless Bluetooth earphones.
  • Electroacoustic validation and clinical testing across four ANC scenarios (normal, generic ANC off, generic ANC on, optimized ANC on) in 65 dB(A) pink noise.
  • Comparison of results with standard audiometry for 50 participants across eight frequencies (0.25-8 kHz).

Main Results:

  • The optimized ANC achieved the highest signal-to-noise ratio in noisy conditions.
  • Strong agreement between optimized ANC hearing thresholds and standard audiometry in normal environments (r = 0.99, p <.01).
  • The proposed method significantly outperformed generic ANC in 65 dB(A) noise, reducing measurement error and improving threshold accuracy.

Conclusions:

  • The optimized ANC technique significantly enhances hearing test reliability in noisy conditions.
  • This technology supports accurate, self-administered hearing assessments outside of clinical settings.
  • Potential applications include home and community-based hearing healthcare.