scholarly journals Dual-carrier processing to convey temporal fine structure cues: Implications for cochlear implants

2015 ◽  
Vol 138 (3) ◽  
pp. 1469-1480 ◽  
Author(s):  
Frédéric Apoux ◽  
Carla L. Youngdahl ◽  
Sarah E. Yoho ◽  
Eric W. Healy
Keyword(s):  
Fine Structure ◽  
Cochlear Implants ◽  
Temporal Fine Structure

scholarly journals Temporal fine structure influences voicing confusions for consonant identification in multi-talker babble

2021 ◽  
Author(s):  
Vibha Viswanathan ◽  
Barbara G. Shinn-Cunningham ◽  
Michael G. Heinz
Keyword(s):  
Fine Structure ◽  
Cochlear Implants ◽  
Background Noise ◽  
Speech Intelligibility ◽  
Temporal Fine Structure ◽  
Vast Literature ◽  
Listening Environments ◽  
Intact Condition ◽  
Speech Content

To understand the mechanisms of speech perception in everyday listening environments, it is important to elucidate the relative contributions of different acoustics cues in transmitting phonetic content. Previous studies suggest that the energy envelopes of speech convey most speech content, while the temporal fine structure (TFS) can aid in segregating target speech from background noise. Despite the vast literature on TFS and speech intelligibility, the role of TFS in conveying additional speech content over what envelopes convey in complex acoustic scenes is poorly understood. The present study addresses this question using online psychophysical experiments to measure consonant identification in multi-talker babble for intelligibility-matched intact and 64-channel envelope-vocoded stimuli. Consonant confusion patterns revealed that listeners had a greater tendency in the vocoded (versus intact) condition to be biased towards reporting that they heard an unvoiced consonant, despite envelope and place cues being largely preserved. This result was replicated when babble instances were varied across independent experiments, suggesting that TFS conveys important voicing cues over what envelopes convey in multi-talker babble, a masker that is ubiquitous in everyday environments. This finding has implications for assistive listening devices that do not currently provide TFS cues, such as cochlear implants.

Temporal fine structure in cochlear implants: Preliminary speech perception results in Cantonese-speaking implant users

2010 ◽  
Vol 130 (9) ◽  
pp. 1031-1039 ◽  
Author(s):  
Reinhold Schatzer ◽  
Andreas Krenmayr ◽  
Dennis K. K. Au ◽  
Mathias Kals ◽  
Clemens Zierhofer
Keyword(s):  
Fine Structure ◽  
Speech Perception ◽  
Cochlear Implants ◽  
Temporal Fine Structure
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