Speech Intelligibility in Various Noise Conditions with the Nucleus® 5 CP810 Sound Processor

Audiology Research
Norbert Dillier, Wai Kong Lai

Abstract

The Nucleus(®) 5 System Sound Processor (CP810, Cochlear™, Macquarie University, NSW, Australia) contains two omnidirectional microphones. They can be configured as a fixed directional microphone combination (called Zoom) or as an adaptive beamformer (called Beam), which adjusts the directivity continuously to maximally reduce the interfering noise. Initial evaluation studies with the CP810 had compared performance and usability of the new processor in comparison with the Freedom™ Sound Processor (Cochlear™) for speech in quiet and noise for a subset of the processing options. This study compares the two processing options suggested to be used in noisy environments, Zoom and Beam, for various sound field conditions using a standardized speech in noise matrix test (Oldenburg sentences test). Nine German-speaking subjects who previously had been using the Freedom speech processor and subsequently were upgraded to the CP810 device participated in this series of additional evaluation tests. The speech reception threshold (SRT for 50% speech intelligibility in noise) was determined using sentences presented via loudspeaker at 65 dB SPL in front of the listener and noise presented either via the same loudspeaker (S0N0) or at 90 degre...Continue Reading

References

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Citations

Mar 14, 2018·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Thomas WesargSusan Arndt
Aug 28, 2019·Cochlear Implants International·Geert De CeulaerPaul J Govaerts
Feb 9, 2020·Hearing Research·Sonia TabibiNorbert Dillier
Aug 18, 2021·Laryngoscope Investigative Otolaryngology·Matthias HeyThomas Hocke

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Methods Mentioned

BETA
cochlear implants
cochlear implant

Software Mentioned

[UNK] Sound Processor ( )
HearCom
SPSS Statistics
OLSA

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