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Swin-PSAxialNet: An Efficient Multi-Organ Segmentation Technique

Swin-PSAxialNet: An Efficient Multi-Organ Segmentation Technique

Published on: July 5, 2024

Stream segregation with high spatial acuity.

John C Middlebrooks¹, Zekiye A Onsan

¹Department of Otolaryngology, University of California at Irvine, Irvine, California 92697-5310, USA. j.midd@uci.edu

The Journal of the Acoustical Society of America

|December 13, 2012

Summary

This summary is machine-generated.

Spatial hearing aids in sound recognition. This study shows spatial cues are crucial for auditory stream segregation, with precise location discrimination depending on sound frequency and duration.

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Area of Science:

Auditory Neuroscience
Psychoacoustics
Signal Processing

Background:

Spatial hearing aids in sound recognition and source identification.
The role of spatial cues in auditory stream segregation remains debated.
Rhythmic masking release is a proposed measure for spatial stream segregation acuity.

Purpose of the Study:

To investigate the spatial acuity of auditory stream segregation using rhythmic masking release.
To determine how sound frequency, location, and duration influence spatial stream segregation.
To explore the relationship between spatial location discrimination and stream segregation.

Main Methods:

Listeners performed rhythm discrimination tasks with free-field target noise-bursts and spatially separated maskers.
Rhythmic masking release thresholds were measured across different horizontal and vertical locations.
Sound frequency and noise-burst duration were systematically varied.

Main Results:

Auditory stream segregation thresholds approached minimum audible angles for broadband sounds in the horizontal plane (≥8°).
Low-frequency sounds showed similar thresholds, while high-frequency sounds had wider thresholds, indicating interaural delays are more precise than interaural level differences.
Vertical midline performance varied with burst duration, with thresholds improving from >30° (10 ms) to 7.1° (40 ms).

Conclusions:

Spatial cues significantly contribute to auditory stream segregation.
Distinct auditory mechanisms likely underlie spatial location discrimination and spatial stream segregation.
Interaural time differences are more effective than interaural level differences for high-frequency spatial stream segregation.