Levels at eardrum and psychoacoustical data in loudness mismatch experiments

This repository contains the raw psychoacoustical data and calculated sound pressure levels at eardrum from the following publications: [1] F. Denk, M. Kohnen, J. Llorca-Bofí, M. Vorländer & B. Kollmeier: “The ‘missing 6 dB’ revisited: Influence of room acoustics and binaural parameters on the loudness mismatch between headphones and loudspeakers“ (submitted) [2] M. Kohnen, F. Denk, J. Llorca-Bofí, B. Kollmeier. & M. Vorländer: “ Cross-site investigation on head-related and headphone transfer function measurements: Implications on loudness balancing ” (in preparation) Files are stored as plain tables in txt format, where the top rows are the variable names and columns are separated by tabs. EardrumLevels: Sound pressure levels at eardrum for loudspeaker and headphone presentation with equal loudness, specified in a row for each subject and condition (combination of Room, Headphone, Signal and Interaural Coherence during headphone presentation). Levels have been computed by utilizing individual transfer functions, see Sec. 2 of [1] for further details. The appropriate levels obtained with KEMAR transfer functions are also provided here. The given standard deviation of the headphone level relates to the psychoacoustic uncertainty, and equals the standard deviation across reversal points in the adaptive loudness matching procedure. IC_data: Interaural coherence values in all rooms measured with KEMAR and all utilized signals; mean and standard deviation across several measurements around the reference listener position as given in Fig. 1 of [1]. The average interaural coherence values stated here were used in the “Room-Matched” headphone presentation mode. For further details, see Sec. 2.2 of [1]. ASW_data: Apparent Souce Width judgements of the headphone presentation relative to the loudspeaker, in the subjet and condition specified in each row. For details see Sec. 2.1 of [1]. KLS_data: Loudness growth functions of the subjects participating in Oldenburg, determined for the individual subjects and stimuli for left/right and binaural presentation using Adaptive Categorial Loudness Scaling (ACALOS). The columns named SPLX give the value of the fitted loudness function in Categorial Units (CU, [0,50]) for the free-field SPL X. For further details see Sec. 2.3 of [1]. OLSA_data: Signal-to-noise ratios at 50% speech understanding (SRT50) for the subjects participating in Oldenburg, using the Oldenburg Sentence Test (OLSA) with binaural or left-ear playback, and speech and noise either collocated (S00N00, both at front) or separated (S00N90, speech at front and noise on the right side of head). For further details see Sec. 2.3 of [1]. Individual head- and headphone related transfer functions from [1, 2] are published at https://doi.org/10.5281/zenodo.4153118 Funded by the Deutsche Forschungsgemeinschaft (DFG) – Projektnummer 352015383 – SFB 1330 A4.