10.6084/m9.figshare.6387890.v1
Angela Josupeit
Angela
Josupeit
Esther Schoenmaker
Esther
Schoenmaker
Steven van de Par
Steven
van de Par
Volker Hohmann
Volker
Hohmann
Dataset for: Sparse periodicity-based auditory features explain human performance in a spatial multi-talker auditory scene analysis task
Wiley
2018
auditory system models
speech intelligibility
auditory scene analysis
speech segregation
Neuroscience
2018-08-22 08:30:49
Dataset
https://wiley.figshare.com/articles/dataset/Dataset_for_Sparse_periodicity-based_auditory_features_explain_human_performance_in_a_spatial_multi-talker_auditory_scene_analysis_task/6387890
Human listeners robustly decode speech information from a talker of interest that is embedded in a mixture of spatially distributed interferers. A relevant question is which time-frequency segments of the speech are predominantly used by a listener to solve such a complex Auditory Scene Analysis task. A recent psychoacoustic study investigated the relevance of low signal-to-noise ratio (SNR) components of a target signal on speech intelligibility in a spatial multi-talker situation. For this, a three-talker stimulus was manipulated in the spectro-temporal domain such that target speech time-frequency units below a variable SNR threshold (SNR<sub>crit</sub>) were discarded while keeping the interferers unchanged. The psychoacoustic data indicate that only target components at and above a local SNR of about 0 dB contribute to intelligibility. The present study applies an auditory scene analysis “glimpsing” model to the same manipulated stimuli. Model data are found to be similar to the human data, supporting the notion of “glimpsing”, i.e., that salient speech-related information is predominantly used by the auditory system to decode speech embedded in a mixture of sounds, at least for the tested conditions of three overlapping speech signals. This implies that perceptually relevant auditory information is sparse and may be processed with low computational effort, which is relevant for neurophysiological research of scene analysis and novelty processing in the auditory system.