The effect of compression speed on intelligibility: Simulated hearing-aid processing with and without original temporal fine structure information

2012 ◽  
Vol 132 (3) ◽  
pp. 1592-1601 ◽  
Author(s):  
Kathryn Hopkins ◽  
Andrew King ◽  
Brian C. J. Moore
Keyword(s):  
Fine Structure ◽  
Hearing Aid ◽  
Temporal Fine Structure ◽  
Structure Information ◽  
Compression Speed

Effect of Speech Material on the Benefit of Temporal Fine Structure Information in Speech for Young Normal-Hearing and Older Hearing-Impaired Participants

2012 ◽  
Vol 33 (3) ◽  
pp. 377-388 ◽  
Author(s):  
Thomas Lunner ◽  
Renskje K. Hietkamp ◽  
Martin R. Andersen ◽  
Kathryn Hopkins ◽  
Brian C. J. Moore
Keyword(s):  
Fine Structure ◽  
Normal Hearing ◽  
Hearing Impaired ◽  
Temporal Fine Structure ◽  
Structure Information

scholarly journals The Temporal Fine Structure of Background Noise Determines the Benefit of Bimodal Hearing for Recognizing Speech

2020 ◽  
Vol 21 (6) ◽  
pp. 527-544
Author(s):  
H. C. Stronks ◽  
J. J. Briaire ◽  
J. H. M. Frijns
Keyword(s):  
Fine Structure ◽  
Steady State ◽  
Speech Recognition ◽  
Hearing Aid ◽  
Low Frequency ◽  
Temporal Fine Structure ◽  
Significant Difference ◽  
Babble Noise ◽  
Speech Recognition In Noise ◽  
Bimodal Hearing

Abstract Cochlear implant (CI) users have more difficulty understanding speech in temporally modulated noise than in steady-state (SS) noise. This is thought to be caused by the limited low-frequency information that CIs provide, as well as by the envelope coding in CIs that discards the temporal fine structure (TFS). Contralateral amplification with a hearing aid, referred to as bimodal hearing, can potentially provide CI users with TFS cues to complement the envelope cues provided by the CI signal. In this study, we investigated whether the use of a CI alone provides access to only envelope cues and whether acoustic amplification can provide additional access to TFS cues. To this end, we evaluated speech recognition in bimodal listeners, using SS noise and two amplitude-modulated noise types, namely babble noise and amplitude-modulated steady-state (AMSS) noise. We hypothesized that speech recognition in noise depends on the envelope of the noise, but not on its TFS when listening with a CI. Secondly, we hypothesized that the amount of benefit gained by the addition of a contralateral hearing aid depends on both the envelope and TFS of the noise. The two amplitude-modulated noise types decreased speech recognition more effectively than SS noise. Against expectations, however, we found that babble noise decreased speech recognition more effectively than AMSS noise in the CI-only condition. Therefore, we rejected our hypothesis that TFS is not available to CI users. In line with expectations, we found that the bimodal benefit was highest in babble noise. However, there was no significant difference between the bimodal benefit obtained in SS and AMSS noise. Our results suggest that a CI alone can provide TFS cues and that bimodal benefits in noise depend on TFS, but not on the envelope of the noise.

Sign in / Sign up

Export Citation Format

Share Document