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[Directivity a qualitative function of hearing aids (author's transl)]

C Sanguy, J C Olivier, J de Lorenzi

Annales D'Oto-Laryngologie Et De Chirurgie Cervico Faciale : Bulletin De La Societe D'Oto-Laryngologie Des Hopitaux De Paris

|September 1, 1977

Summary

This study introduces "directivity" in hearing aids, demonstrating how directional microphones improve speech intelligibility in noisy environments. A double-blind test objectively compares directional and omni-directional hearing aid performance.

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Area of Science:

Audiology and Hearing Science
Biomedical Engineering
Acoustics

Background:

Hearing deficiency impacts communication and quality of life.
Conventional hearing aids may struggle in complex acoustic environments.
Directional microphones offer potential for improved sound localization and speech clarity.

Purpose of the Study:

To investigate the audioprosthetic phenomena termed "directivity" in hearing aids.
To objectively evaluate the performance differences between directional and omni-directional microphones in hearing aids.
To determine if improved speech intelligibility in noise is attributable to directional microphone capabilities.

Main Methods:

Development and implementation of a double-blind testing protocol.

Related Experiment Videos

Experimental research using hearing aids with directional and omni-directional microphones.

Creation of a simulated noisy auditory environment for testing.

Main Results:

Demonstration of the audioprosthetic phenomena of directivity.
Objective data supporting the choice between directional and omni-directional hearing aids.
Confirmation of enhanced speech intelligibility in noise with directional microphones.

Conclusions:

Directional microphones in hearing aids significantly improve speech intelligibility in noisy settings.
The study provides objective evidence for the benefits of directivity in hearing aid technology.
The findings support the use of directional microphones for audioprosthetic correction of hearing deficiency.