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Article Dans Une Revue Journal of the Acoustical Society of America Année : 2019

Amplitude modulation detection and modulation masking in school-age children and adults

Christian Lorenzi
Laurianne Cabrera
  • Fonction : Auteur
Lori J Leibold
  • Fonction : Auteur
John H Grose
  • Fonction : Auteur

Résumé

Two experiments were performed to better understand on-and off-frequency modulation masking in normal-hearing school-age children and adults. Experiment 1 estimated thresholds for detecting 16-, 64-or 256-Hz sinusoidal amplitude modulation (AM) imposed on a 4300-Hz pure tone. Thresholds tended to improve with age, with larger developmental effects for 64-and 256-Hz AM than 16-Hz AM. Detection of 16-Hz AM was also measured with a 1000-Hz off-frequency masker tone carrying 16-Hz AM. Off-frequency modulation masking was larger for younger than older children and adults when the masker was gated with the target, but not when the masker was continuous. Experiment 2 measured detection of 16-or 64-Hz sinusoidal AM carried on a bandpass noise with and without additional on-frequency masker AM. Children and adults demonstrated modulation masking with similar tuning to modulation rate. Rate-dependent age effects for AM detection on a pure-tone carrier are consistent with maturation of temporal resolution, an effect that may be obscured by modulation masking for noise carriers. Children were more susceptible than adults to off-frequency modulation masking for gated stimuli, consistent with maturation in the ability to listen selectively in frequency, but the children were not more susceptible to on-frequency modulation masking than adults. V

Domaines

Psychologie
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Dates et versions

hal-03898601 , version 1 (14-12-2022)

Identifiants

Citer

Emily Buss, Christian Lorenzi, Laurianne Cabrera, Lori J Leibold, John H Grose. Amplitude modulation detection and modulation masking in school-age children and adults. Journal of the Acoustical Society of America, 2019, 145 (4), pp.2565-2575. ⟨10.1121/1.5098950⟩. ⟨hal-03898601⟩
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