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Updated: May 13, 2025

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Objectively Measuring Audiovisual Effects in Noise Using Virtual Human Speakers.

John Kyle Cooper¹, Jonas Vanthornhout¹, Astrid van Wieringen¹

¹ExpORL, Department of Neurosciences, KU Leuven, Leuven, Belgium.

Trends in Hearing

|April 13, 2025

Summary

This summary is machine-generated.

Audiovisual cues improve speech understanding in noise. This study found that electrophysiological measures, using the Audiovisual True-to-Life Assessment of Auditory Rehabilitation (AVATAR) paradigm, correlate with behavioral measures, confirming audiovisual benefits.

Keywords:

EEG measures auditory-visual speech behavioral measures speech understanding virtual humans

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Published on: January 23, 2017

Area of Science:

Audiology
Neuroscience
Speech and Hearing Sciences

Background:

Speech intelligibility in noisy environments depends on integrating audio and visual cues.
Measuring audiovisual integration effectiveness is challenging in complex settings.
The Audiovisual True-to-Life Assessment of Auditory Rehabilitation (AVATAR) paradigm offers an ecological approach to assess speech intelligibility.

Purpose of the Study:

To investigate if electrophysiological measures align with behavioral measures of speech intelligibility within the AVATAR paradigm.
To test the hypothesis that visual cues enhance both behavioral and electrophysiological scores as signal-to-noise ratio (SNR) decreases.

Main Methods:

Twenty young adults with normal hearing participated.
Behavioral testing involved estimating speech reception threshold (SRT) using adaptive sentence lists.
Electrophysiological testing used neural tracking decoders to measure reconstruction accuracy across five SNR levels and two visual conditions (audio-only, audiovisual).

Main Results:

Higher reconstruction accuracies were observed in the audiovisual condition compared to audio-only in moderate to high noise levels.
Electrophysiological measures showed a potential correlation with behavioral measures, indicating audiovisual benefit.

Conclusions:

The AVATAR paradigm effectively captures audiovisual speech intelligibility.
Electrophysiological measures, specifically neural tracking, show promise in reflecting behavioral audiovisual benefits in challenging listening conditions.