@InProceedings{Verhey2020_461,
<br/>   author = {Jesko L. Verhey},
<br/>   booktitle = {Studientexte zur Sprachkommunikation: Elektronische Sprachsignalverarbeitung 2020},
<br/>   title = {Listening through a Cochlear Implant},
<br/>   year = {2020},
<br/>   editor = {Andreas Wendemuth and Ronald Böck and Ingo Siegert},
<br/>   month = mar,
<br/>   pages = {235--235},
<br/>   publisher = {TUDpress, Dresden},
<br/>   abstract  = {A cochlear implant (CI) partially restores hearing for profoundly deaf patients. It is a surgical
implanted electronic device. It includes an array of electrodes that are inserted into the inner
ear. These electrodes stimulate the auditory nerve by short electric pulses. To transmit spectral
information of the sound it uses the concept of frequency-place transformation, which is observed
in the healthy cochlea. Thus, a key part of the signal processing is a filterbank analysis.
Due to the filterbank processing and a subsequent envelope extraction, the sound processing
of a CI severely affects sound information. This talk will focus on two aspects of sound perception
through a CI. The first aspect is perception of speech. CI processing is optimised for
speech recognition. However, some aspects of speech are not preserved when transmitted
thorough a CI which causes CI listeners to have more difficulties in complex acoustic environment
to understand speech than normal-hearing listeners. This talk will address the role of
reverberation in speech recognition and the ability to recognize talkers through a CI. The second
focus is on music perception with a CI. Music still poses a particular problem to CI users.
Whereas the CI signal processing roughly preserves the temporal structure such as rhythms,
recognition of melodies or certain instruments is significantly harder. This is presumably partly
due to the limited frequency resolution of a CI, leading to a reduced pitch percept. In the
light of the altered pitch percept with a CI we investigated perception of musical consonance.
We have addressed this issue by specific experiments where we focussed on consonance perception
for chords in isolation and in successions (cadences). Overall, it is shown that a CI is a
powerful utility to restore hearing but that further research is required to overcome the limitations
of a CI in complex acoustic environments.},
<br/>   isbn = {978-3-959081-93-1},
<br/>   issn = {0940-6832},
<br/>   keywords = {Hauptvortrag},
<br/>   url = {https://www.essv.de/pdf/2020_235_235.pdf},
<br/>}