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Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention

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Published on: December 20, 2024

Sound field calculation for rectangular sources.

K B Ocheltree¹, L A Frizzel

¹IBM T.J. Watson Res. Center, Yorktown Heights, NY.

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

|January 1, 1989

Summary

This study presents a method for calculating the sound field of rectangular sources, comparing square and circular shapes. Square sources offer a more uniform near-field pressure distribution than circular ones.

Area of Science:

Acoustics and Sound Field Analysis
Computational Physics
Wave Propagation

Background:

Understanding sound fields is crucial in acoustics.
Previous research often focused on idealized circular sources.
The influence of baffle geometry on sound fields requires further investigation.

Purpose of the Study:

To develop and present a method for calculating the sound field of a rectangular continuous-wave source.
To compare the acoustic characteristics of square sources with those of circular sources.
To analyze the effects of attenuation on the sound field of square sources.

Main Methods:

Numerical calculation of the sound field generated by rectangular sources.
Illustration of the method for various square source sizes (0.5 to 100 lambda).

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Comparative analysis of sound fields from square and circular sources.

Main Results:

Square and circular sources exhibit similar beam widths and on-axis minima locations.
Square sources demonstrate a more uniform transverse pressure distribution in the near-field.
The study examined the impact of attenuation on the sound field characteristics of square sources.

Conclusions:

The presented method provides a means to analyze sound fields from rectangular sources.
Rectangular sources offer distinct advantages in near-field pressure uniformity compared to circular sources.
Further research can explore more complex source geometries and baffle configurations.