RT Journal Article
T1 Adaptation to noise in spectrotemporal modulation detection and word recognition
A1 López Ramos, David
A1 Marrufo Pérez, Miriam Isabel
A1 Eustaquio Martín, María Almudena
A1 López Bascuas, Luis Enrique
A1 López Poveda, Enrique A
AB Noise adaptation is the improvement in auditory function as the signal of interest is delayed in the noise. Here, we investigated if noise adaptation occurs in spectral, temporal, and spectrotemporal modulation detection as well as in speech recognition. Eighteen normal-hearing adults participated in the experiments. In the modulation detection tasks, the signal was a 200ms spectrally and/or temporally modulated ripple noise. The spectral modulation rate was two cycles per octave, the temporal modulation rate was 10 Hz, and the spectrotemporal modulations combined these two modulations, which resulted in a downward-moving ripple. A control experiment was performed to determine if the results generalized to upward-moving ripples. In the speech recognition task, the signal consisted of disyllabic words unprocessed or vocoded to maintain only envelope cues. Modulation detection thresholds at 0 dB signal-to-noise ratio and speech reception thresholds were measured in quiet and in white noise (at 60 dB SPL) for noise-signal onset delays of 50 ms (early condition) and 800 ms (late condition). Adaptation was calculated as the threshold difference between the early and late conditions. Adaptation in word recognition was statistically significant for vocoded words (2.1 dB) but not for natural words (0.6 dB). Adaptation was found to be statistically significant in spectral (2.1 dB) and temporal (2.2 dB) modulation detection but not in spectrotemporal modulation detection (downward ripple: 0.0 dB, upward ripple: −0.4 dB). Findings suggest that noise adaptation in speech recognition is unrelated to improvements in the encoding of spectrotemporal modulation cues.
PB Sage
YR 2024
FD 2024-09-12
LK https://hdl.handle.net/20.500.14352/130850
UL https://hdl.handle.net/20.500.14352/130850
LA eng
NO López-Ramos, D., Marrufo-Pérez, M. I., Eustaquio-Martín, A., López-Bascuas, L. E., y Lopez-Poveda, E. A. (2024). Adaptation to noise in spectrotemporal modulation detection and word recognition. Trends in Hearing, 28, 23312165241266322. https://doi.org/10.1177/23312165241266322
NO Banco Santander
NO Ministerio de Ciencia e Innovación (España)
NO European Commission
NO Ministerio de Universidades (España)
NO Universidad de Salamanca
DS Docta Complutense
RD 10 jun 2026