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.本仓库包含来自以下两篇学术出版物的原始心理声学数据与计算得到的鼓膜声压级：[1] F. Denk、M. Kohnen、J. Llorca-Bofí、M. Vorländer 与 B. Kollmeier：《“缺失的6分贝”再探：房间声学与双耳参数对耳机与扬声器间响度失配的影响》（已投稿）；[2] M. Kohnen、F. Denk、J. Llorca-Bofí、B. Kollmeier 与 M. Vorländer：《头相关与耳机传递函数测量的跨站点研究：对响度平衡的启示》（在撰待投）。所有文件均采用TXT格式存储为纯文本表格，首行为变量名，各列以制表符分隔。EardrumLevels（鼓膜声压级数据集）：包含扬声器与耳机等响度播放条件下的鼓膜声压级，每一行对应一名受试者与一组实验条件（房间、耳机类型、信号类型以及耳机播放时的耳间相干性组合）。声压级通过个体传递函数计算得到，详细说明参见文献[1]第2节。本数据集同时提供了使用KEMAR传递函数得到的对应声压级。耳机声压级的给定标准差对应心理声学不确定性，其值等于自适应响度匹配流程中反转点间的标准差。IC_data（耳间相干性（interaural coherence）数据集）：包含在所有房间中使用KEMAR与所有所用信号测得的耳间相干性值，即文献[1]图1中所述参考听者位置处多次测量的均值与标准差。此处给出的平均耳间相干性值用于“房间匹配”耳机播放模式，详细说明参见文献[1]第2.2节。ASW_data（表观声源宽度数据集）：包含各受试者与对应实验条件下，耳机播放相对于扬声器播放的表观声源宽度评价结果，每一行对应一组受试者与实验条件，详细说明参见文献[1]第2.1节。KLS_data（响度增长函数数据集）：包含来自奥尔登堡实验的受试者的响度增长函数，通过自适应分类响度缩放（Adaptive Categorial Loudness Scaling, ACALOS），针对每名受试者、每种刺激以及左耳/右耳/双耳播放条件确定。名为SPLX的列表示针对自由场声压级X拟合得到的响度函数值，单位为分类单位（Categorial Units, CU，取值范围[0,50]），详细说明参见文献[1]第2.3节。OLSA_data（奥尔登堡句子测试（Oldenburg Sentence Test, OLSA）数据集）：包含来自奥尔登堡实验的受试者的50%言语理解率对应的信噪比（SRT50），实验采用奥尔登堡句子测试，分为双耳播放或左耳播放两种方式，且言语与噪声的空间位置分为同位置（S00N00，二者均位于前方）与分离位置（S00N90，言语位于前方、噪声位于头部右侧）两种条件，详细说明参见文献[1]第2.3节。文献[1]、[2]中提及的个体头部与耳机相关传递函数已发布于https://doi.org/10.5281/zenodo.4153118。本项目由德国研究基金会（Deutsche Forschungsgemeinschaft, DFG）资助，项目编号352015383，属于SFB 1330 A4子项目。