@article{ref1,
title="Synthesized speech rate and pitch effects on intelligibility of warning messages for pilots",
journal="Human factors",
year="1984",
author="Simpson, C. A. and Marchionda-Frost, K.",
volume="26",
number="5",
pages="509-517",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}