PMID- 31946246
OWN - NLM
STAT- MEDLINE
DCOM- 20200330
LR  - 20200928
IS  - 2694-0604 (Electronic)
IS  - 2375-7477 (Linking)
VI  - 2019
DP  - 2019 Jul
TI  - An Investigation of Audibility Effects on Cochlear Implant Speech Perception 
      Prediction.
PG  - 1801-1804
LID - 10.1109/EMBC.2019.8856937 [doi]
AB  - Output Signal to Noise Ratio (OSNR) is the Signal to Noise Ratio (SNR) at the 
      output of a cochlear implant (CI) sound processor. Whereas other prediction 
      metrics typically predict mean speech-in-noise test scores for a group of 
      subjects, an OSNR-based model has been shown to accurately predict scores for 
      individual CI recipients. The OSNR model was unable to predict scores for 
      aggressive Ideal Binary Mask (IdBM) sound processing. This algorithm calculated 
      Input Signal to Noise Ratio (ISNR), in each CI channel, and applied a gain 
      function to suppress noise when a gain threshold was exceeded.The current study 
      investigated the effect of IdBM processing on the separate speech and noise 
      signals to determine whether audibility was affecting intelligibility. A novel 
      metric, "OSNR and Power" (OSNRP), which combined the effect of the reduction in 
      output speech power with OSNR, was proposed.It was found that the IdBM reduced 
      the output speech level, likely causing audibility issues, at poor ISNRs. OSNRP 
      accurately predicted individual speech-in-noise test scores for aggressive 
      IdBM.The novel OSNRP metric has potential as a tool for calculating optimum 
      configurations for sound processor parameter settings for individual CI 
      recipients. We propose using a prescribed set of reference test conditions, the 
      results of which can be utilized to predict outcomes when using alternative sound 
      processing parameters and techniques, and to tailor them to the individual needs 
      of individual CI recipients.
FAU - Watkins, Greg D
AU  - Watkins GD
FAU - Swanson, Brett A
AU  - Swanson BA
FAU - Suaning, Gregg J
AU  - Suaning GJ
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Annu Int Conf IEEE Eng Med Biol Soc
JT  - Annual International Conference of the IEEE Engineering in Medicine and Biology 
      Society. IEEE Engineering in Medicine and Biology Society. Annual International 
      Conference
JID - 101763872
SB  - IM
MH  - *Cochlear Implantation
MH  - *Cochlear Implants
MH  - Humans
MH  - Noise
MH  - Signal-To-Noise Ratio
MH  - *Speech Perception
EDAT- 2020/01/18 06:00
MHDA- 2020/03/31 06:00
CRDT- 2020/01/18 06:00
PHST- 2020/01/18 06:00 [entrez]
PHST- 2020/01/18 06:00 [pubmed]
PHST- 2020/03/31 06:00 [medline]
AID - 10.1109/EMBC.2019.8856937 [doi]
PST - ppublish
SO  - Annu Int Conf IEEE Eng Med Biol Soc. 2019 Jul;2019:1801-1804. doi: 
      10.1109/EMBC.2019.8856937.