Effects of frequency modulation (FM) transmitter microphone directivity on speech perception in noise

American Journal of Audiology
M Samantha LewisNicole V Kreisman

Abstract

Frequency modulation (FM) technology can significantly improve the speech perception ability of individuals with sensorineural hearing loss (SNHL) in background noise. Previous investigations have demonstrated that the microphone design of the FM transmitter can have a significant impact on this improved speech perception. The purpose of this investigation was to compare 3 types of FM transmitter microphone designs: (a) wide angle (omnidirectional microphone), which amplifies sounds coming from all directions around the microphone equally; (b) zoom (1 directional microphone), which provides less amplification to signals coming from the rear, and (c) superzoom (2 directional microphones), which provides less amplification to signals originating from the rear and the sides. Fifteen adults with bilateral slight to moderately severe SNHL participated. Speech perception was assessed using the Hearing in Noise Test (M. Nilsson, S. Soli, and J. Sullivan, 1994). Speech spectrum shaped noise served as the noise competition. Results revealed that the best speech perception in noise was obtained when the FM transmitter was used in the zoom setting. The poorest performance was obtained when the FM transmitter was in the wide-angle mode. Th...Continue Reading

References

Jun 1, 1991·Journal of Speech and Hearing Research·L M Thibodeau, K A Saucedo
Jan 1, 1990·Journal of Rehabilitation Research and Development·P V McAlister
Jun 1, 1986·Journal of Speech and Hearing Research·R Plomp
May 1, 1984·Ear and Hearing·F H BessD E Riggs
Feb 1, 1980·The Journal of Speech and Hearing Disorders·B A FreemanD E Riggs
Feb 1, 1995·Journal of Speech and Hearing Research·L S EisenbergT S Bell
Feb 1, 1994·The Journal of the Acoustical Society of America·M NilssonJ A Sullivan
Feb 1, 1994·Ear and Hearing·D A Fabry
Jan 19, 2000·Molecular Biology of the Cell·M J LewisH R Pelham
Jun 30, 2000·European Journal of Ultrasound : Official Journal of the European Federation of Societies for Ultrasound in Medicine and Biology·A GiorgioE Caturelli
Mar 1, 1965·Exceptional Children·D A SANDERS
Sep 3, 2004·Journal of the American Academy of Audiology·M Samantha LewisJane Enrietto Horn

❮ Previous
Next ❯

Citations

May 12, 2010·Journal of Deaf Studies and Deaf Education·Sandie M Bass-Ringdahl
Jun 24, 2020·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Jonas FogelsTraci Flynn

❮ Previous
Next ❯

Related Concepts

Related Feeds

Auditory Perception

Auditory perception is the ability to receive and interpret information attained by the ears. Here is the latest research on factors and underlying mechanisms that influence auditory perception.

Related Papers

Journal of the American Academy of Audiology
M Samantha LewisJane Enrietto Horn
Journal of Rehabilitation Research and Development
Todd A Ricketts
© 2022 Meta ULC. All rights reserved