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Loudness of sounds with a subcritical bandwidth: A challenge to current loudness models?

: Hots, J.; Rennies, J.; Verhey, J.L.


Journal of the Acoustical Society of America : JASA 134 (2013), No.4, pp.EL334-EL339
ISSN: 0001-4966
ISSN: 1520-8524
Deutsche Forschungsgemeinschaft DFG
Journal Article
Fraunhofer IDMT ()

Level differences at equal loudness were measured for bandpass noises centered at 1.5 kHz with bandwidths from 5 to 405 Hz and a 1.5-kHz pure tone. Irrespective of the reference (tone or 135-Hz wide noise), the data indicate a decrease in loudness with increasing bandwidth. This is at odds with the assumption of stationary loudness models that loudness for sounds with a subcritical bandwidth is determined by the intensity and center frequency only. It is also not in agreement with dynamic loudness models, which predict higher levels for a tone than for equally loud noises, i.e., the opposite effect.