title: Sound quality measures for speech in noise through a commercial hearing aid implementing digital noise reduction.
abstract: This brief report discusses the affect of digital noise reduction (DNR) processing on aided speech recognition and sound quality measures in 14 adults fitted with a commercial hearing aid. Measures of speech recognition and sound quality were obtained in two different speech-in-noise conditions (71 dBA speech, +6 dB SNR and 75 dBA speech, +1 dB SNR). The results revealed that the presence or absence of DNR processing did not impact speech recognition in noise (either positively or negatively). Paired comparisons of sound quality for the same speech in noise signals, however, revealed a strong preference for DNR processing. These data suggest that at least one implementation of DNR processing is capable of providing improved sound quality, for speech in noise, in the absence of improved speech recognition.
authors.affiliation: Dan Maddox Hearing Aid Research Laboratory, Department of Hearing and Speech Sciences, Vanderbilt Bill Wilkerson Center, 19th Avenue South, Nashville, TN 37212, USA. todd.a.ricketts@vanderbilt.edu
authors.forename: Todd A
authors.initials: TA
authors.lastname: Ricketts
authors.forename: Benjamin W Y
authors.initials: BW
authors.lastname: Hornsby
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004867:Equipment Design; D005260:Female; D006310:Hearing Aids; D034381:Hearing Loss / Q000534:rehabilitation; D006801:Humans; D008297:Male; D008875:Middle Aged; D009622:Noise / Q000517:prevention & control; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013016:Sound; D013067:Speech Perception; D013069:Speech Reception Threshold Test; D014833:Voice Quality