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Related Concept Videos

Design Example01:23

Design Example

The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
The Cochlea01:13

The Cochlea

The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
Hair Cells01:22

Hair Cells

Hair cells are the sensory receptors of the auditory system—they transduce mechanical sound waves into electrical energy that the nervous system can understand. Hair cells are located in the organ of Corti within the cochlea of the inner ear, between the basilar and tectorial membranes. The actual sensory receptors are called inner hair cells. The outer hair cells serve other functions, such as sound amplification in the cochlea, and are not discussed in detail here.
Hearing01:31

Hearing

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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Related Experiment Video

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Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
06:04

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

Published on: March 24, 2023

Fine structure processing improves telephone speech perception in cochlear implant users.

Javier Galindo1, Luis Lassaletta, Rosa Pérez Mora

  • 1Department of Otolaryngology-Head and Neck Surgery, University Hospital La Paz, Secretaria de Otorrinolaringología, 4th Floor, Paseo de la Castellana 261, 28046 Madrid, Spain. doctorgalindo@gmail.com

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
|July 7, 2012
PubMed
Summary
This summary is machine-generated.

Fine Structure Processing (FSP) significantly improved telephone speech perception and quality of life for cochlear implant users compared to High-Definition Continuous Interleaved Sampling (HDCIS). Most participants preferred FSP for better hearing outcomes.

Related Experiment Videos

Last Updated: May 20, 2026

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
06:04

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

Published on: March 24, 2023

Area of Science:

  • Audiology
  • Biomedical Engineering
  • Neuroscience

Background:

  • Cochlear implants (CIs) aim to restore hearing in individuals with severe to profound sensorineural hearing loss.
  • Speech processing strategies are crucial for optimizing CI performance, especially in challenging listening environments like telephone use.
  • Comparing different CI sound processing strategies is essential for enhancing user experience and functional outcomes.

Purpose of the Study:

  • To compare the effectiveness of two speech processing strategies, High-Definition Continuous Interleaved Sampling (HDCIS) and Fine Structure Processing (FSP), in cochlear implant users.
  • To evaluate speech perception in various telephone use scenarios and assess subjective quality of life improvements.
  • To determine user preferences between the HDCIS and FSP strategies.

Main Methods:

  • A randomized, double-blind, intra-individual study design was employed.
  • Twenty-five post-lingually deafened CI users tested both HDCIS and FSP strategies with PulsarCI(100)/SonataTI(100) and Opus2 processors.
  • Speech perception was assessed using disyllabic words in landline and mobile phone conditions (with/without noise, Bluetooth necklace), alongside quality of life questionnaires (GBI, Faber).

Main Results:

  • Fine Structure Processing (FSP) demonstrated superior performance across most telephone conditions, including landline use with (11.5% improvement) and without (10% improvement) background noise.
  • Significant improvements were observed with FSP in mobile use without noise (6.3% improvement) and with a Bluetooth necklace (11% improvement).
  • Quality of life scores were significantly higher with FSP, and 84% of participants expressed a preference for this strategy.

Conclusions:

  • The FSP speech coding strategy enhances telephone speech recognition in cochlear implant users compared to HDCIS.
  • FSP implementation leads to significant improvements in quality of life for CI recipients.
  • FSP represents a beneficial advancement in cochlear implant sound processing for improved communication and well-being.