Loudness reduction induced by a contralateral tone.

J Acoust Soc Am

Institute of Hearing, Speech and Language and Department of Speech-Language Pathology & Audiology (106A FR), Northeastern University, Boston, Massachusetts 02115, USA.

Published: July 2007

AI Article Synopsis

  • The study measured the Induced Loudness Reduction (ILR) of a weaker tone following a stronger tone, comparing results when both tones were presented in the same ear (ipsilateral) and in opposite ears (contralateral).
  • When the tone duration was set to 200 ms, the average loudness reduction was 11 dB for ipsilateral and 6 dB for contralateral presentations among 24 listeners.
  • For a shorter tone duration of 5 ms, the ILR was consistent at 8 dB for both ipsilateral and contralateral conditions, and there was a strong correlation (r around 0.80) between the two types of ILR for each duration.

Article Abstract

The induced reduction in the loudness (ILR) of a weaker tone caused by a preceding stronger tone was measured with both tones in the same ear (ipsilateral ILR) and also in opposite ears (contralateral ILR). The two tones were always equal in duration and were presented repeatedly over several minutes. When the tone duration was 200 ms, for 24 listeners the loudness reduction averaged 11 dB under ipsilateral ILR and 6 dB under contralateral ILR. When the duration was 5 ms, ILR was 8 dB whether ipsilateral or contralateral. For each duration, ipsilateral and contralateral ILR were strongly correlated (r around 0.80).

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Source
http://dx.doi.org/10.1121/1.2735107DOI Listing

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