Jeffery A. Jones
The role of perceptual mediation in experienced urgency of auditory warnings.
Journal of the Acoustical Society of America, 122, EL185-190.
Russo, F. A. & Jones, J. A.
published: 2007 | Research publication | Speech and Communication Lab
Magnitude estimation was used to assess the experience of urgency
in pulse-train stimuli (pulsed white noise) ranging from 3.13 to
200 Hz. At low pulse rates, pulses were easily resolved. At high pulse rates,
pulses fused together leading to a tonal sensation with a clear pitch level.
Urgency ratings followed a nonmonotonic (polynomial) function with local
maxima at 17.68 and 200 Hz. The same stimuli were also used in response
time and pitch scaling experiments. Response times were negatively correlated
with urgency ratings. Pitch scaling results indicated that urgency of
pulse trains is mediated by the perceptual constructs of speed and pitch.
revised Feb 11/08
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