title: Speech recognition with in-the-ear and behind-the-ear dual-microphone hearing instruments.
abstract: The primary purpose of this study was to compare the overall listening benefit in diffuse noise provided by dual-microphone technology in an in-the-ear (ITE) hearing instrument to that provided by dual-microphone technology in a behind-the-ear (BTE) hearing instrument. Further, the study was designed to determine whether the use of the dual-microphone + the manufacturer's party response algorithm in the ITE and BTE hearing instruments provided listening benefit in diffuse noise over their respective omnidirectional microphone modes. Twenty-four adults with mild to moderately severe sensorineural hearing loss were evaluated while wearing binaural BTE and ITE hearing instruments. The results indicated that the dual-microphone + party response mode did provide significant benefit in diffuse noise for both the ITE (3.27 dB signal-to-noise ratio [SNR] improvement) and BTE (5.77 dB SNR improvement) hearing instruments relative to their respective conventional omnidirectional microphones. No significant difference in performance was found between the ITE and BTE hearing instruments when each device was in the dual-microphone + party response mode. It is concluded that the use of dual-microphone technology in both ITE and BTE hearing instruments can improve speech recognition in diffuse noise.
authors.affiliation: Hearing Health Care Research Unit, School of Communication Sciences and Disorders, The University of Western Ontario, London, Canada.
authors.forename: J M
authors.initials: JM
authors.lastname: Pumford
authors.forename: R C
authors.initials: RC
authors.lastname: Seewald
authors.forename: S D
authors.initials: SD
authors.lastname: Scollie
authors.forename: L M
authors.initials: LM
authors.lastname: Jenstad
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004423:Ear; D004558:Electric Stimulation / Q000295:instrumentation; D004867:Equipment Design; D005260:Female; D006310:Hearing Aids; D006319:Hearing Loss, Sensorineural / Q000534:rehabilitation; D006801:Humans; D008297:Male; D008875:Middle Aged; D013067:Speech Perception / Q000502:physiology*; D013069:Speech Reception Threshold Test / Q000379:methods