PMID- 36044501
OWN - NLM
STAT- MEDLINE
DCOM- 20220913
LR  - 20221026
IS  - 1558-0210 (Electronic)
IS  - 1534-4320 (Linking)
VI  - 30
DP  - 2022
TI  - Pitch Perception With the Temporal Limits Encoder for Cochlear Implants.
PG  - 2528-2539
LID - 10.1109/TNSRE.2022.3203079 [doi]
AB  - The temporal-limits-encoder (TLE) strategy has been proposed to enhance the 
      representation of temporal fine structure (TFS) in cochlear implants (CIs), which 
      is vital for many aspects of sound perception but is typically discarded by most 
      modern CI strategies. TLE works by computing an envelope modulator that is within 
      the temporal pitch limits of CI electric hearing. This paper examines the TFS 
      information encoded by TLE and evaluates the salience and usefulness of this 
      information in CI users. Two experiments were conducted to compare pitch 
      perception performance of TLE versus the widely-used Advanced Combinational 
      Encoder (ACE) strategy. Experiment 1 investigated whether TLE processing improved 
      pitch discrimination compared to ACE. Experiment 2 parametrically examined the 
      effect of changing the lower frequency limit of the TLE modulator on pitch 
      ranking. In both experiments, F0 difference limens were measured with synthetic 
      harmonic complex tones using an adaptive procedure. Signal analysis of the 
      outputs of TLE and ACE strategies showed that TLE introduces important temporal 
      pitch cues that are not available with ACE. Results showed an improvement in 
      pitch discrimination with TLE when the acoustic input had a lower F0 frequency. 
      No significant effect of lower frequency limit was observed for pitch ranking, 
      though a lower limit did tend to provide better outcomes. These results suggest 
      that the envelope modulation introduced by TLE can improve pitch perception for 
      CI listeners.
FAU - Zhou, Huali
AU  - Zhou H
FAU - Kan, Alan
AU  - Kan A
FAU - Yu, Guangzheng
AU  - Yu G
FAU - Guo, Zhenyu
AU  - Guo Z
FAU - Zheng, Nengheng
AU  - Zheng N
FAU - Meng, Qinglin
AU  - Meng Q
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20220908
PL  - United States
TA  - IEEE Trans Neural Syst Rehabil Eng
JT  - IEEE transactions on neural systems and rehabilitation engineering : a 
      publication of the IEEE Engineering in Medicine and Biology Society
JID - 101097023
SB  - IM
MH  - Acoustic Stimulation
MH  - *Cochlear Implantation/methods
MH  - *Cochlear Implants
MH  - Cues
MH  - Humans
MH  - Pitch Perception
MH  - *Speech Perception
EDAT- 2022/09/01 06:00
MHDA- 2022/09/14 06:00
CRDT- 2022/08/31 13:44
PHST- 2022/09/01 06:00 [pubmed]
PHST- 2022/09/14 06:00 [medline]
PHST- 2022/08/31 13:44 [entrez]
AID - 10.1109/TNSRE.2022.3203079 [doi]
PST - ppublish
SO  - IEEE Trans Neural Syst Rehabil Eng. 2022;30:2528-2539. doi: 
      10.1109/TNSRE.2022.3203079. Epub 2022 Sep 8.