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The research aims to explore the auditory mechanisms behind the Lombard effect, where speakers raise their voice in noisy environments.

Auditory–Motor Mechanisms of the Lombard Effect

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The research aims to explore the auditory mechanisms behind the Lombard effect, where speakers raise their voice in noisy environments.
Participants produced speech in various noise conditions: before, during, and after exposure to speech-shaped noise.
Two experiments were conducted: one with noise prior to voicing onset and another triggered by voice onset.
Loudness discrimination thresholds were assessed to understand their impact on Lombard responses.
Vocal intensity increased during noise exposure in both experiments compared to baseline.
Higher intensity was observed when noise occurred before voicing onset, indicating nuances in auditory influence.
Intensity decreased from baseline after noise exposure in Experiment 1, while it remained elevated in Experiment 2.

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Randomized trial reveals auditory mechanisms affecting vocal intensity in noise, suggesting new research paths.

Aaron et al. (2026) studied this question.

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