Induced loudness reduction as a function of frequency difference between test tone and inducer

Jeremy Marozeau, Michael Epstein

Research output: Contribution to journalJournal articleResearchpeer-review


When a high-intensity tone (inducer) is followed by a moderate-intensity tone (test tone), the loudness of the latter is reduced. This phenomenon, called induced loudness reduction (ILR), depends on the frequency separation of the two tones; as the difference in frequency increases, the amount of ILR decreases. However, the precise course of this decrease is not well known. This article presents two experiments that address this question. In the first experiment, the amount of loudness reduction produced by a 2.5-kHz 80-dB-SPL inducer was measured with the frequency of the test tone swept from 800 Hz to 6 kHz. In the second experiment, the amount of ILR was measured with the same inducer and with test tones set at 2, 2.5, 3, and 4 kHz. Both experiments show that some ILR occurs at frequency separations as wide as four critical bands.
Original languageEnglish
JournalAttention, Perception & Psychophysics
Issue number4
Pages (from-to)725-731
Publication statusPublished - 2008
Externally publishedYes


  • Acoustics
  • Auditory Perception
  • Humans
  • Loudness Perception
  • Psychoacoustics
  • acoustics
  • article
  • hearing
  • human
  • instrumentation
  • psychophysics
  • TIME
  • high-intensity tone
  • induced loudness reduction
  • moderate-intensity tone
  • Primates Mammalia Vertebrata Chordata Animalia (Animals, Chordates, Humans, Mammals, Primates, Vertebrates) - Hominidae [86215] human common
  • 07002, Behavioral biology - General and comparative behavior
  • 07004, Behavioral biology - Human behavior
  • 20004, Sense organs - Physiology and biochemistry
  • Sensory Reception
  • Behavior
  • Sense Organs


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