Electroacoustic verification of frequency modulation systems in cochlear implant users

Fidêncio, Vanessa Luisa Destro; Jacob, Regina Tangerino de Souza; Tanamati, Liège Franzini; Bucuvic, Érika Cristina; Moret, Adriane Lima Mortari

doi:10.1016/j.bjorl.2017.11.001

Cited by 1 publication

(2 citation statements)

References 12 publications

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“…In their study, 13 in the electroacoustic evaluation of the FM system coupled to the Nucleus 5 speech processor, the authors achieved transparency in the 7 (100%) cases evaluated with +2 dB FM gain, without the need for further adjustment since all FM receivers coupled to the Nucleus 5 speech processor were specific (ML14i).…”

Section: Discussionmentioning

confidence: 99%

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Frequency Modulation System and Bone Conduction Hearing Aid: Electroacoustic Verification

Paccola

Filho

Jacob

2020

Int Arch Otorhinolaryngol

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Introduction A protocol has not yet been developed to perform electroacoustic measurements and behavioral tests to fit the frequency modulation (FM) system in bone conduction hearing aid (BCHA) users. Electroacoustic verification, with “FM transparency” achieved, ensures user audibility of FM transmitter and hearing aid signals. Objective To propose and validate a protocol for electroacoustic verification of the FM system coupled to the BCHA. Method Twenty-four sets of FM system and BCHA were submitted to electroacoustic verification, using a receiver and a plastic adapter to connect the BCHA to a 2cc coupler in the hearing instrument analyzer. The measurements were performed in the acoustic box, at 65 dB sound pressure level (SPL), with International Speech Test Signal (ISTS), first to the BCHA microphone and then to the FM system microphone, to determine the transparency, in which equivalent inputs for both microphones result in equivalent outputs. The FM gain or volume has been adjusted to try to gain transparency for the outputs of the two input devices. Results Transparency was achieved for all sets evaluated, but in some combinations, adjustments to the FM receiver gain over the manufacturer's default setting were required. Conclusion The proposed protocol proved to be effective for the electroacoustic verification of the FM system coupled to the BCHA.

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Section: Discussionmentioning

confidence: 99%

“…Other researchers, 13 14 when performing electroacoustic measurements on CI-coupled FM systems, achieved transparency for most combinations of CI and FM, but adjustments in FM gain or volume relative to the manufacturer's default setting were necessary.…”

Section: Discussionmentioning

confidence: 99%

Frequency Modulation System and Bone Conduction Hearing Aid: Electroacoustic Verification

Paccola

Filho

Jacob

2020

Int Arch Otorhinolaryngol

View full text Add to dashboard Cite

show abstract

Electroacoustic verification of frequency modulation systems in cochlear implant users

Abstract: The electroacoustic evaluation protocol suggested was effective in evaluation of transparency between the frequency modulation system and the cochlear implant. Performing the adjustment of the speech processor and the frequency modulation system gain are essential when fitting this device.

Cited by 1 publication

References 12 publications

Frequency Modulation System and Bone Conduction Hearing Aid: Electroacoustic Verification

Frequency Modulation System and Bone Conduction Hearing Aid: Electroacoustic Verification

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