Quantifying the implications of nonlinear cochlear tuning for auditory-filter estimates

2002 ◽  
Vol 111 (2) ◽  
pp. 996-1011 ◽  
Author(s):  
Michael G. Heinz ◽  
H. Steven Colburn ◽  
Laurel H. Carney
Keyword(s):  
Auditory Filter ◽  
Cochlear Tuning

scholarly journals Psychophysical auditory filter estimates reveal sharper cochlear tuning in musicians

2014 ◽  
Vol 136 (1) ◽  
pp. EL33-EL39 ◽  
Author(s):  
Gavin M. Bidelman ◽  
Jonathan M. Schug ◽  
Skyler G. Jennings ◽  
Shaum P. Bhagat
Keyword(s):  
Auditory Filter ◽  
Cochlear Tuning

scholarly journals Mechanisms of Spectrotemporal Modulation Detection for Normal- and Hearing-Impaired Listeners

2021 ◽  
Vol 25 ◽  
pp. 233121652097802
Author(s):  
Emmanuel Ponsot ◽  
Léo Varnet ◽  
Nicolas Wallaert ◽  
Elza Daoud ◽  
Shihab A. Shamma ◽  
...  
Keyword(s):  
Speech Intelligibility ◽  
Hearing Impaired ◽  
Temporal Modulation ◽  
Computational Tools ◽  
Cochlear Tuning ◽  
Cochlear Hearing Loss ◽  
Nonlinear Processing ◽  
Linear Band ◽  
Band Pass ◽  
Modulation Filter

Spectrotemporal modulations (STM) are essential features of speech signals that make them intelligible. While their encoding has been widely investigated in neurophysiology, we still lack a full understanding of how STMs are processed at the behavioral level and how cochlear hearing loss impacts this processing. Here, we introduce a novel methodological framework based on psychophysical reverse correlation deployed in the modulation space to characterize the mechanisms underlying STM detection in noise. We derive perceptual filters for young normal-hearing and older hearing-impaired individuals performing a detection task of an elementary target STM (a given product of temporal and spectral modulations) embedded in other masking STMs. Analyzed with computational tools, our data show that both groups rely on a comparable linear (band-pass)–nonlinear processing cascade, which can be well accounted for by a temporal modulation filter bank model combined with cross-correlation against the target representation. Our results also suggest that the modulation mistuning observed for the hearing-impaired group results primarily from broader cochlear filters. Yet, we find idiosyncratic behaviors that cannot be captured by cochlear tuning alone, highlighting the need to consider variability originating from additional mechanisms. Overall, this integrated experimental-computational approach offers a principled way to assess suprathreshold processing distortions in each individual and could thus be used to further investigate interindividual differences in speech intelligibility.

scholarly journals Estimate of auditory filter shape using notched-noise masking for various signal frequencies

2006 ◽  
Vol 27 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Masashi Unoki ◽  
Kazuhito Ito ◽  
Yuichi Ishimoto ◽  
Chin-Tuan Tan
Keyword(s):  
Noise Masking ◽  
Auditory Filter

scholarly journals Across-species differences in pitch perception are consistent with differences in cochlear filtering

eLife ◽  
2019 ◽  
Vol 8 ◽  
Author(s):  
Kerry MM Walker ◽  
Ray Gonzalez ◽  
Joe Z Kang ◽  
Josh H McDermott ◽  
Andrew J King
Keyword(s):  
Fundamental Frequency ◽  
Species Differences ◽  
Pitch Perception ◽  
Species Variation ◽  
Opposite Pattern ◽  
Auditory Periphery ◽  
Cochlear Tuning ◽  
Animal Vocalizations ◽  
Species Specific ◽  
Relative Salience

Pitch perception is critical for recognizing speech, music and animal vocalizations, but its neurobiological basis remains unsettled, in part because of divergent results across species. We investigated whether species-specific differences exist in the cues used to perceive pitch and whether these can be accounted for by differences in the auditory periphery. Ferrets accurately generalized pitch discriminations to untrained stimuli whenever temporal envelope cues were robust in the probe sounds, but not when resolved harmonics were the main available cue. By contrast, human listeners exhibited the opposite pattern of results on an analogous task, consistent with previous studies. Simulated cochlear responses in the two species suggest that differences in the relative salience of the two pitch cues can be attributed to differences in cochlear filter bandwidths. The results support the view that cross-species variation in pitch perception reflects the constraints of estimating a sound’s fundamental frequency given species-specific cochlear tuning.

scholarly journals Effect of stimulus variability on auditory filter shape

1976 ◽  
Vol 60 (S1) ◽  
pp. S116-S116
Author(s):  
Roy D. Patterson ◽  
G. Bruce Henning
Keyword(s):  
Auditory Filter ◽  
Stimulus Variability
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