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Related Concept Videos

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When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
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The Nucleus01:32

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The nucleus is a membrane-bound organelle that acts as a control center in a eukaryotic cell. It contains chromosomal DNA, which controls gene expression and precisely regulates the production of proteins within the cell. In contrast, the DNA inside the mitochondria and chloroplast only carries out functions that are specific to those organelles.
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Related Experiment Video

Updated: Feb 8, 2026

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
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Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages

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Improved hearing in noise using new signal processing algorithms with the Cochlear™ Nucleus® 6 sound processor.

Jan Gilden1, Kristen Lewis2, Ginger Grant3

  • 1Houston Ear Research Foundation, 7737 Southwest Fwy #630, Houston, TX 77074, USA.

Journal of Otology
|June 26, 2018
PubMed
Summary

The Automatic Scene Classifier (SCAN) algorithm in the Nucleus 6 cochlear implant processor significantly improved speech understanding in noise compared to older Nucleus 5 and Freedom Hybrid models.

Keywords:
Automatic scene classifier (SCAN)Cochlear implantNucleus 6SmartSound iQSpeech perception

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Area of Science:

  • Audiology
  • Biomedical Engineering
  • Neuroscience

Background:

  • Cochlear implant technology aims to restore hearing by bypassing damaged parts of the inner ear.
  • Sound processing algorithms are crucial for optimizing speech perception in noisy environments.
  • Previous generations of cochlear implant sound processors include the Nucleus 5 (CP810) and Freedom Hybrid (CP900 series).

Purpose of the Study:

  • To evaluate the performance enhancement offered by the Automatic Scene Classifier (SCAN) algorithm in the Nucleus 6 sound processor.
  • To compare the SCAN algorithm's efficacy against the default algorithms of the Nucleus 5 and Freedom Hybrid sound processors.

Main Methods:

  • Eighty-two adult cochlear implant recipients participated in the study.
  • Participants included users of Nucleus 5 (n=40) and Freedom Hybrid (n=42) sound processors.
  • Speech perception in noise was assessed using AzBio sentences with participants' current processors and the Nucleus 6 processor with SCAN enabled.

Main Results:

  • The SCAN algorithm demonstrated statistically significant non-inferior and superior performance compared to the Nucleus 5 and Freedom Hybrid processors.
  • Performance improvements were observed when the SCAN algorithm was enabled in the Nucleus 6 sound processor.
  • Comparisons were made against Nucleus 5 and Freedom Hybrid processors programmed with ASC + ADRO®.

Conclusions:

  • The SCAN algorithm in the Nucleus 6 sound processor offers superior performance over the Nucleus 5 and Freedom Hybrid processors.
  • The findings highlight the clinical utility and benefits of the SCAN algorithm for cochlear implant users.
  • This advancement in sound processing technology can potentially improve quality of life for individuals with hearing loss.