Dataset for: "Investigating the effects of age and hearing loss on speech intelligibility and amplitude modulation frequency selectivity"

This dataset supports the findings outlined in Regev, J., Zaar, J., Relaño-Iborra, H., and Dau, T. (<b>2025</b>). "Investigating the effects of age and hearing loss on speech intelligibility and amplitude modulation frequency selectivity." The Journal of the Acoustical Society of America, 157(3), 2077-2090. https://doi.org/10.1121/10.0036220The dataset contains data for 10 young and 9 older listeners with normal hearing (young and older NH listeners), as well as 9 older listeners with hearing impairment (older HI listeners).<br>The Readme file provides a description of the dataset's content, and of the related article.<br>The data collected were:Population data: age, tested ear, and reverse digit span scoreAudiogramsSpeech-reception thresholds (SRTs)Average dynamic ranges of masked-threshold patterns (MTPs)TP numbers across datasets (providing the corresponding TP numbers for the present dataset and those of Regev <i>et al.</i>, 2024a and Regev <i>et al.</i>, 2024b).<b>Population Data</b><br>Dataset giving the population information for the 28 participants (<i>tp</i>), split into young NH, older NH, and older HI (<i>group</i>), tested in the study. The data summarizes the participants' <i>age</i><i>,</i> tested ear (<i>ear</i>), and their Reverse Digit Span score (<i>rds_score</i>). The age is given in years and the reverse digit span score is given on a normalized scale from 0 to 1.The reverse digit span scores are re-used from Regev <i>et al.</i> (2024a; 2024b).<b>Audiogram</b><br>Audiometric thresholds (<i>thresh</i>) were collected for 28 participants (<i>tp</i>), split into young NH, older NH, and older HI (<i>group</i>), at frequencies (<i>freq</i>) of 0.125, 0.25, 0.5, 1, 2, 3, 4, 6, and 8 kHz. The thresholds are given in dB Hearing Level (HL).<br><b>Speech-Reception Thresholds (SRTs)</b><br>Speech-reception thresholds (<i>SRT</i>) at the 50%-correct point were collected 28 participants (<i>tp</i>), split into young NH, older NH, and older HI (<i>group</i>). The SRTs are given in dB signal-to-noise ratio (SNR). The test used the Danish Hearing in Noise Test (HINT; Nielsen &amp; Dau, 2011).<br>Five different maskers (<i>conditions</i>) were used:a speech-shaped noise (<i>SSN</i>)the ICRA-5 noise (<i>ICRA</i>; Dreschler <i>et al.</i>, 2001)a male competing talker (<i>Male comp</i>)a female competing talker (<i>Female comp</i>)a cocktail-party scenario (<i>Cocktail</i>).A detailed description of each masker is available in the article. For each condition, the SRT was assessed twice (<i>repetition</i>), each time using a different list (<i>list</i>) from the target speech corpus. The SRTs were then averaged across repetitions.<b>Dynamic Range of Masked-Threshold Patterns (MTPs)</b><br>Regev <i>et al.</i> (2024a; 2024b) collected masked-threshold patterns (MTPs) for the 28 participants (<i>tp</i>), split into young NH, older NH, and older HI (<i>group</i>).MTPs were collected at four different target modulation frequencies (<i>fmod</i>) of 4, 16, 64, and 128 Hz.<br><br>Here, the average dynamic range (<i>dyn_range)</i> of the MTP at the 4-Hz target modulation frequency (<i>fmod</i>) was derived for each participant. For each participant, the peak of the MTP was identified as the maximum threshold. The difference between the peak and the minimum threshold on each side of the peak was then computed, and the average dynamic range was finally calculated as the mean between the differences on both sides. If a single side of the peak was identified, then he threshold difference on that side was taken as the dynamic range.<br>Masked thresholds for TP23 could not be could not be obtained for the 4-Hz target modulation frequency by Regev <i>et al.</i> (2024b; where the participant was labeled TP07). Hence, the dynamic range was registered as NaN.<b>TP numbers across datasets</b><br>The participant in this study previously provided data reported in the datasets by Regev <i>et al.</i> (2024a, 2024b). Some of these data were re-used in this study, either directly (i.e., the RDS scores) or to derive new measures (i.e., the MTPs to derive the dynamic ranges). This sheet provides the correspondence of the TP numbers between this dataset (<i>tp</i>) and those of Regev <i>et al.</i> (2024a, 2024b; <i>tp_Regev_2024a </i>and <i>tp_Regev­_2024b</i>, respectively), for each listener group (<i>group</i>). The sheet states <i>NA</i> in case the participant was not included in the previous dataset.<br><b><i>Ethical statement</i></b><br>All listeners were financially compensated for their time and gave written informed consent. Ethical approval for the study was provided by the Science-Ethics Committee for the Capital Region of Denmark (reference H-16036391).<br><b><i>Acknowledgments</i></b><br>The authors thank Borgný Súsonnudóttir Hansen for her contribution to the data collection. The authors also thank Christian Stender Simonsen for kindly sharing the experimental framework used to run the listening test, as well as several of the signal recordings, and Jens Hjortkjær and Jonatan Märcher-Rørsted for kindly providing their implementations of the reverse digit span test and of the Cambridge formula (CamEq).<br><b><i>References</i></b><br>Dreschler, W. A., Verschuure, H., Ludvigsen, C., &amp; Westermann, S. (<b>2001</b>). ICRA Noises: Artificial Noise Signals with Speech-like Spectral and Temporal Properties for Hearing Instrument Assessment. Audiol, 40(3), 148–157. https://doi.org/10.3109/00206090109073110<br><br>Nielsen J. B. &amp; Dau T. (<b>2011</b>). The Danish hearing in noise test. Int J Audiol. 50(3):202-8. https://doi.org/10.3109/14992027.2010.524254<br>Regev, J., Zaar, J.; Relaño-Iborra, H., &amp; Dau, T. (<b>2024a</b>). Dataset for: "Age-related reduction of amplitude modulation frequency selectivity". Technical University of Denmark. Dataset. https://doi.org/10.11583/DTU.25134527<br><br>Regev, J., Relaño-Iborra, H., Zaar, J., &amp; Dau, T.(<b>2024b</b>). Dataset for: "Disentangling the effects of hearing loss and age on amplitude modulation frequency selectivity". Technical University of Denmark. Dataset. https://doi.org/10.11583/DTU.25134611