Frequency-modulation (FM) technology as a method for improving speech perception in noise for individuals with multiple sclerosis

Michele Samantha Lewis; Michele Hutter; David J. Lilly; Dennis Bourdette; Julie Saunders; Stephen A. Fausti

doi:10.3766/jaaa.17.8.7

Frequency-modulation (FM) technology as a method for improving speech perception in noise for individuals with multiple sclerosis

Michele Samantha Lewis, Michele Hutter, David J. Lilly, Dennis Bourdette, Julie Saunders, Stephen A. Fausti

Neurology

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

Almost half of the population with multiple sclerosis (MS) complains of difficulty hearing, despite having essentially normal pure-tone thresholds. The purpose of the present investigation was to evaluate the effects of frequency-modulation (FM) technology utilization on speech perception in noise for adults with and without MS. Sentence material was presented at a constant level of 65 dBA L_eq from a loudspeaker located at 0° azimuth. The microphone of the FM transmitter was placed 7.5 cm from this loudspeaker. Multitalker babble was presented from four loudspeakers positioned at 45°, 135°, 225°, and 315° azimuths. The starting presentation level for the babble was 55 dBA L_eq. The level of the noise was increased systematically in 1 dB steps until the subject obtained 0% key words correct on the IEEE (Institute for Electrical and Electronic Engineers) sentences. Test results revealed significant differences between the unaided and aided conditions at several signal-to-noise ratios.

Original language	English (US)
Pages (from-to)	605-616
Number of pages	12
Journal	Journal of the American Academy of Audiology
Volume	17
Issue number	8
DOIs	https://doi.org/10.3766/jaaa.17.8.7
State	Published - Sep 2006

Keywords

FM technology
Hearing
Multiple sclerosis
Speech perception

ASJC Scopus subject areas

Speech and Hearing

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10.3766/jaaa.17.8.7

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title = "Frequency-modulation (FM) technology as a method for improving speech perception in noise for individuals with multiple sclerosis",

abstract = "Almost half of the population with multiple sclerosis (MS) complains of difficulty hearing, despite having essentially normal pure-tone thresholds. The purpose of the present investigation was to evaluate the effects of frequency-modulation (FM) technology utilization on speech perception in noise for adults with and without MS. Sentence material was presented at a constant level of 65 dBA Leq from a loudspeaker located at 0° azimuth. The microphone of the FM transmitter was placed 7.5 cm from this loudspeaker. Multitalker babble was presented from four loudspeakers positioned at 45°, 135°, 225°, and 315° azimuths. The starting presentation level for the babble was 55 dBA Leq. The level of the noise was increased systematically in 1 dB steps until the subject obtained 0% key words correct on the IEEE (Institute for Electrical and Electronic Engineers) sentences. Test results revealed significant differences between the unaided and aided conditions at several signal-to-noise ratios.",

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AU - Hutter, Michele

AU - Lilly, David J.

AU - Bourdette, Dennis

AU - Saunders, Julie

AU - Fausti, Stephen A.

PY - 2006/9

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N2 - Almost half of the population with multiple sclerosis (MS) complains of difficulty hearing, despite having essentially normal pure-tone thresholds. The purpose of the present investigation was to evaluate the effects of frequency-modulation (FM) technology utilization on speech perception in noise for adults with and without MS. Sentence material was presented at a constant level of 65 dBA Leq from a loudspeaker located at 0° azimuth. The microphone of the FM transmitter was placed 7.5 cm from this loudspeaker. Multitalker babble was presented from four loudspeakers positioned at 45°, 135°, 225°, and 315° azimuths. The starting presentation level for the babble was 55 dBA Leq. The level of the noise was increased systematically in 1 dB steps until the subject obtained 0% key words correct on the IEEE (Institute for Electrical and Electronic Engineers) sentences. Test results revealed significant differences between the unaided and aided conditions at several signal-to-noise ratios.

AB - Almost half of the population with multiple sclerosis (MS) complains of difficulty hearing, despite having essentially normal pure-tone thresholds. The purpose of the present investigation was to evaluate the effects of frequency-modulation (FM) technology utilization on speech perception in noise for adults with and without MS. Sentence material was presented at a constant level of 65 dBA Leq from a loudspeaker located at 0° azimuth. The microphone of the FM transmitter was placed 7.5 cm from this loudspeaker. Multitalker babble was presented from four loudspeakers positioned at 45°, 135°, 225°, and 315° azimuths. The starting presentation level for the babble was 55 dBA Leq. The level of the noise was increased systematically in 1 dB steps until the subject obtained 0% key words correct on the IEEE (Institute for Electrical and Electronic Engineers) sentences. Test results revealed significant differences between the unaided and aided conditions at several signal-to-noise ratios.

KW - FM technology

KW - Hearing

KW - Multiple sclerosis

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Frequency-modulation (FM) technology as a method for improving speech perception in noise for individuals with multiple sclerosis

Abstract

Keywords

ASJC Scopus subject areas

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