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Effect of Whole-Body Vibration on Speech. Part I: Stimuli Recording and Speech Analysis

In space launch operations, speech intelligibility for radio communications between flight deck and ground control is of critical concern particularly during launch phases of flight having a predicted 12 Hz thrust oscillation. The potential effects of extreme acceleration and vibration during launch scenarios may impact vocal production. In this study, the effect of 0.5 and 0.7 g whole body vibration was evaluated on speech production of words (Diagnostic Rhyme Test word list). Six subjects were recorded in a supine position using a specially-designed chair and vibration platform. Vocal warbling, pitch modulation, and other effects were observed in the spectrographic and Fo analyses.

Author: Begault, Durand
Affiliation: NASA Ames Research Center, Moffett Field, CA, USA
AES Convention:127 (October 2009) Paper Number:7820 Import into BibTeX
Subject:Audio Perception

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