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Communication Dans Un Congrès Année : 2020

The effect of self-motion cues on speech perception in an acoustically complex scene

Résumé

In cocktail party, people talk to each other from different directions and the listener often turns toward the speaker. Previously, we observed a decrease in speech intelligibility during self-orienting movement but we could not isolate the contribution of self-motion cues. In the present study, we isolate self-motion cues by comparing speech perception during self-orienting movement and a situation when the participant stands still and hears sound rotating around them in a way as they were moving. The participant thus receives the same auditory cues during self-motion and while being static. The task of the participants is to listen to an OLSA sentence which may emanate from any of four directions (front, back, sides) and orient naturally. A speech-shaped noise interferer is presented always from the front of the participant, relative to the beginning of the trial. A virtual room acoustic environment is auralized via the loudspeakers of the Simulated Open Field Environment in the anechoic chamber. The stimuli are created by convolving the sounds with impulse responses that were obtained by virtual rotations of the simulated room according to actual self-motion. The results are analyzed in terms of speech performance and behavior, and compared to predictions of a speech intelligibility model. The experiment shows possibilities of interactive virtual environments for auditory research.
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Dates et versions

hal-03234211 , version 1 (26-05-2021)

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Lubos Hladek, Bernhard Seeber. The effect of self-motion cues on speech perception in an acoustically complex scene. Forum Acusticum, Dec 2020, Lyon, France. pp.1283-1285, ⟨10.48465/fa.2020.0364⟩. ⟨hal-03234211⟩

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