scholarly journals Assessing the relationship between talker normalization and spectral contrast effects in speech perception.

2018 ◽  
Author(s):  
Ashley Assgari
Keyword(s):  
Speech Perception ◽  
Contrast Effects ◽  
Spectral Contrast ◽  
Talker Normalization ◽  
The Relationship

scholarly journals Meta-Analysis—Correlation between Spiral Ganglion Cell Counts and Speech Perception with a Cochlear Implant

2021 ◽  
Vol 11 (2) ◽  
pp. 220-226
Author(s):  
Yew-Song Cheng ◽  
Mario A. Svirsky
Keyword(s):  
Speech Perception ◽  
Cochlear Implant ◽  
Ganglion Cells ◽  
Meta Analysis ◽  
Spiral Ganglion ◽  
Spiral Ganglion Cell ◽  
Cell Counts ◽  
Temporal Bones ◽  
The Relationship ◽  
Existing Data

The presence of spiral ganglion cells (SGCs) is widely accepted to be a prerequisite for successful speech perception with a cochlear implant (CI), because SGCs provide the only known conduit between the implant electrode and the central auditory system. By extension, it has been hypothesized that the number of SGCs might be an important factor in CI outcomes. An impressive body of work has been published on findings from the laborious process of collecting temporal bones from CI users and counting the number of SGCs to correlate those numbers with speech perception scores, but the findings thus far have been conflicting. We performed a meta-analysis of all published studies with the hope that combining existing data may help us reach a more definitive conclusion about the relationship between SGC count and speech perception scores in adults.

scholarly journals Cognitive and physiological measures of listening effort during degraded speech perception: A comparison of dual-task and pupillometry paradigms

2020 ◽  
Author(s):  
Sarah Elizabeth Margaret Colby ◽  
Bob McMurray
Keyword(s):  
Speech Perception ◽  
Dual Task ◽  
Pupil Size ◽  
Spoken Word Recognition ◽  
Recognition Task ◽  
Spoken Word ◽  
Physiological Measures ◽  
Listening Effort ◽  
Response Feedback ◽  
The Relationship

Purpose: Listening effort is quickly becoming an important metric for assessing speech perception in less-than-ideal situations. However, the relationship between the construct of listening effort and the measures used to assess it remain unclear. We compared two measures of listening effort: a cognitive dual task and a physiological pupillometry task. We sought to investigate the relationship between these measures of effort and whether engaging effort impacts speech accuracy.Method: In Experiment 1, 30 participants completed a dual task and pupillometry task that were carefully matched in stimuli and design. The dual task consisted of a spoken word recognition task and a visual match-to-sample task. In the pupillometry task, pupil size was monitored while participants completed a spoken word recognition task. Both tasks presented words at three levels of listening difficulty (unmodified, 8-channel vocoding, and 4-channel vocoding) and provided response feedback on every trial. We refined the pupillometry task in Experiment 2 (n=31); crucially, participants no longer received response feedback. Finally, we ran a new group of subjects on both tasks in Experiment 3 (n=30).Results: In Experiment 1, accuracy in the visual task decreased with increased listening difficulty in the dual task, but pupil size was sensitive to accuracy and not listening difficulty. After removing feedback in Experiment 2, changes in pupil size were predicted by listening difficulty, suggesting the task was now sensitive to engaged effort. Both tasks were sensitive to listening difficulty in Experiment 3, but there was no relationship between the tasks and neither task predicted speech accuracy.Conclusions: Consistent with previous work, we found little evidence for a relationship between different measures of listening effort. We also found no evidence that effort predicts speech accuracy, suggesting that engaging more effort does not lead to improved speech recognition. Cognitive and physiological measures of listening effort are likely sensitive to different aspects of the construct of listening effort.

scholarly journals An orthographic effect in loanword adaptation

2016 ◽  
Vol 1 (1) ◽  
Author(s):  
Robert Daland ◽  
Mira Oh
Keyword(s):  
Information Theory ◽  
Speech Perception ◽  
Recent Work ◽  
Native Language ◽  
Relative Strength ◽  
Large Role ◽  
Loanword Adaptation ◽  
English Vowels ◽  
Source Form ◽  
The Relationship

Loanword corpora have been an important tool in studying the relationship between speech perception and native-language phonotactics. Recent work has challenged this use of loanword corpora on methodological grounds, based on the fact that source and possibly loan orthography conditions the adaptation. The present study replicates and extends this finding by using information theory to quantify the relative strength of orthographic effects, in the adaptation of English vowels into Korean. It is found that the orthographic effect is strong for unstressed vowels, but almost unnoticable for stressed vowels. It is proposed that orthography plays a large role in adaptation only when the source form is perceptually compatible with multiple phonological parses in the borrowing language.

scholarly journals Multispectral Contrast of Archaeological Features: A Quantitative Evaluation

2019 ◽  
Vol 11 (8) ◽  
pp. 913 ◽  
Author(s):  
Tuna Kalayci ◽  
Rosa Lasaponara ◽  
John Wainwright ◽  
Nicola Masini
Keyword(s):  
Quantitative Evaluation ◽  
Spectral Indices ◽  
Test Results ◽  
Precipitation Regime ◽  
Future Studies ◽  
Spectral Contrast ◽  
Simple Features ◽  
The Impact ◽  
The Relationship ◽  
Spectral Responses

This study provides an evaluation of spectral responses of hollow ways in Upper Mesopotamia. Hollow ways were used for the transportation of animals, carts, and other moving agents for centuries. The aim is to show how the success of spectral indices varies in describing topologically simple features even in a seemingly homogeneous geographic unit. The variation is further highlighted under the changing precipitation regime. The methodology begins with an exploration of the relationship between the date of a multispectral scene and the visibility of hollow ways. The next step is to evaluate the impact of rainfall levels on numerous indices and to quantify spectral contrast. The contrast between a hollow way and its background is evaluated with Welch’s t-test and the association between precipitation regime and spectral responses of hollow ways are investigated with Correspondence Analysis and Fisher’s test. Results highlight an intrinsic relationship between the precipitation regime and the ways in which archaeological features reflects and/or emits electromagnetic energy. Next, the categorization of spectral indices based on different rainfall levels can be used as a guidance in future studies. Finally, the study suggests contrast becomes an even more fruitful concept as one moves from the spatial domain to the spectral domain.

scholarly journals The relationship between speech intelligibility and speech perception in cochlear implant patients

2018 ◽  
Author(s):  
N Freimann ◽  
D Polterauer ◽  
S Gollwitzer ◽  
J Müller ◽  
ME Schuster
Keyword(s):  
Speech Perception ◽  
Cochlear Implant ◽  
Speech Intelligibility ◽  
The Relationship
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