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Updated: Oct 11, 2025

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
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Speech perception and hearing effort using a new active middle ear implant audio processor.

Torsten Rahne1, Laura Fröhlich2, Luise Wagner2

  • 1Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Halle (Saale), Halle (Saale), Germany. torsten.rahne@uk-halle.de.

European Archives of Oto-Rhino-Laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery
|December 7, 2021
PubMed
Summary

The new SAMBA 2 audio processor for Vibrant Soundbridge (VSB) users significantly improves speech understanding in quiet and noise, reduces listening effort, and enhances satisfaction compared to the older SAMBA model.

Keywords:
Listening effortOutcomeQuestionnairesSAMBA 2Speech perceptionVibrant Soundbridge

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Area of Science:

  • Audiology
  • Biomedical Engineering
  • Hearing Implant Technology

Background:

  • The Vibrant Soundbridge (VSB) system, a prominent active middle ear implant, has undergone continuous technological advancements since its introduction in 1996.
  • The latest iteration, the SAMBA 2 audio processor, represents the fourth generation, aiming to enhance user auditory experience.

Purpose of the Study:

  • To clinically evaluate the audiological performance of the new SAMBA 2 audio processor.
  • To assess subjective user satisfaction with the SAMBA 2 compared to its predecessor, SAMBA.
  • To determine the benefits of upgrading to the SAMBA 2 for existing VSB implant recipients.

Main Methods:

  • A comparative study involving 15 Vibrant Soundbridge users who tested both SAMBA and SAMBA 2 processors for approximately three weeks each.
  • Audiological assessments included air and bone conduction thresholds, unaided and aided sound field thresholds, speech recognition in quiet (Freiburg monosyllables) and noise (OLSA).
  • Subjective measures comprised listening effort (ACALES) and validated questionnaires (SSQ12, APSQ); 16 normal-hearing subjects also provided data for ACALES and sound field tests.

Main Results:

  • Both SAMBA and SAMBA 2 processors demonstrated significant audiological improvements over the unaided condition.
  • While sound field thresholds were comparable between SAMBA and SAMBA 2, the SAMBA 2 showed statistically significant enhancements in speech recognition (quiet and noise), reduced listening effort, and higher subjective satisfaction.
  • Data from normal-hearing subjects provided a benchmark for listening effort and sound field performance.

Conclusions:

  • The SAMBA 2 audio processor offers superior audiological and subjective performance compared to the previous SAMBA model across all evaluated parameters.
  • Upgrading to the SAMBA 2 is recommended for patients with a Vibrant Soundbridge implant to improve their overall hearing experience.
  • This study highlights the benefits of continuous innovation in audio processor technology for cochlear implant users.