Suprathreshold auditory processing and speech recognition in noise for hearing‐impaired listeners.

2010 ◽  
Vol 127 (3) ◽  
pp. 1903-1903
Author(s):  
Van Summers ◽  
Joshua G. W. Bernstein ◽  
Matthew J. Makashay ◽  
Golbarg Mehraei ◽  
Sarah Melamed ◽  
...  
Keyword(s):  
Speech Recognition ◽  
Auditory Processing ◽  
Hearing Impaired ◽  
Speech Recognition In Noise

An algorithm to improve speech recognition in noise for hearing-impaired listeners: Consonant identification and articulatory feature transmission

2014 ◽  
Vol 135 (4) ◽  
pp. 2412-2412 ◽  
Author(s):  
Eric W. Healy ◽  
Sarah E. Yoho ◽  
Yuxuan Wang ◽  
Frederic Apoux ◽  
Carla L. Youngdahl ◽  
...  
Keyword(s):  
Speech Recognition ◽  
Hearing Impaired ◽  
Speech Recognition In Noise

Fitting and Verification of Frequency Modulation Systems on Children with Normal Hearing

2014 ◽  
Vol 25 (06) ◽  
pp. 529-540 ◽  
Author(s):  
Erin C. Schafer ◽  
Danielle Bryant ◽  
Katie Sanders ◽  
Nicole Baldus ◽  
Katherine Algier ◽  
...  
Keyword(s):  
Speech Recognition ◽  
Frequency Modulation ◽  
Auditory Processing ◽  
Signal To Noise Ratio ◽  
Recognition Performance ◽  
Normal Hearing ◽  
Signal To Noise ◽  
The Real ◽  
Hearing Sensitivity ◽  
Speech Recognition In Noise

Background: Several recent investigations support the use of frequency modulation (FM) systems in children with normal hearing and auditory processing or listening disorders such as those diagnosed with auditory processing disorders, autism spectrum disorders, attention-deficit hyperactivity disorder, Friedreich ataxia, and dyslexia. The American Academy of Audiology (AAA) published suggested procedures, but these guidelines do not cite research evidence to support the validity of the recommended procedures for fitting and verifying nonoccluding open-ear FM systems on children with normal hearing. Documenting the validity of these fitting procedures is critical to maximize the potential FM-system benefit in the abovementioned populations of children with normal hearing and those with auditory-listening problems. Purpose: The primary goal of this investigation was to determine the validity of the AAA real-ear approach to fitting FM systems on children with normal hearing. The secondary goal of this study was to examine speech-recognition performance in noise and loudness ratings without and with FM systems in children with normal hearing sensitivity. Research Design: A two-group, cross-sectional design was used in the present study. Study Sample: Twenty-six typically functioning children, ages 5–12 yr, with normal hearing sensitivity participated in the study. Intervention: Participants used a nonoccluding open-ear FM receiver during laboratory-based testing. Data Collection and Analysis: Participants completed three laboratory tests: (1) real-ear measures, (2) speech recognition performance in noise, and (3) loudness ratings. Four real-ear measures were conducted to (1) verify that measured output met prescribed-gain targets across the 1000–4000 Hz frequency range for speech stimuli, (2) confirm that the FM-receiver volume did not exceed predicted uncomfortable loudness levels, and (3 and 4) measure changes to the real-ear unaided response when placing the FM receiver in the child’s ear. After completion of the fitting, speech recognition in noise at a –5 signal-to-noise ratio and loudness ratings at a +5 signal-to-noise ratio were measured in four conditions: (1) no FM system, (2) FM receiver on the right ear, (3) FM receiver on the left ear, and (4) bilateral FM system. Results: The results of this study suggested that the slightly modified AAA real-ear measurement procedures resulted in a valid fitting of one FM system on children with normal hearing. On average, prescriptive targets were met for 1000, 2000, 3000, and 4000 Hz within 3 dB, and maximum output of the FM system never exceeded and was significantly lower than predicted uncomfortable loudness levels for the children. There was a minimal change in the real-ear unaided response when the open-ear FM receiver was placed into the ear. Use of the FM system on one or both ears resulted in significantly better speech recognition in noise relative to a no-FM condition, and the unilateral and bilateral FM receivers resulted in a comfortably loud signal when listening in background noise. Conclusions: Real-ear measures are critical for obtaining an appropriate fit of an FM system on children with normal hearing.

Effects of an Adaptive Filter Hearing Aid on Speech Recognition in Noise by Hearing-Impaired Subjects

1988 ◽  
Vol 9 (1) ◽  
pp. 15-21 ◽  
Author(s):  
Dianne J. Van Tasell ◽  
Sveinar Y. Larsen ◽  
David A. Fabry
Keyword(s):  
Speech Recognition ◽  
Adaptive Filter ◽  
Hearing Aid ◽  
Hearing Impaired ◽  
Speech Recognition In Noise

Suprathreshold Auditory Processing and Speech Perception in Noise: Hearing-Impaired and Normal-Hearing Listeners

2013 ◽  
Vol 24 (04) ◽  
pp. 274-292 ◽  
Author(s):  
Van Summers ◽  
Matthew J. Makashay ◽  
Sarah M. Theodoroff ◽  
Marjorie R. Leek
Keyword(s):  
Steady State ◽  
Speech Recognition ◽  
Auditory Processing ◽  
High Frequency ◽  
Normal Hearing ◽  
Detection Task ◽  
Frequency Selectivity ◽  
Hearing Impaired ◽  
Signal To Noise ◽  
Peripheral Compression

Background: It is widely believed that suprathreshold distortions in auditory processing contribute to the speech recognition deficits experienced by hearing-impaired (HI) listeners in noise. Damage to outer hair cells and attendant reductions in peripheral compression and frequency selectivity may contribute to these deficits. In addition, reduced access to temporal fine structure (TFS) information in the speech waveform may play a role. Purpose: To examine how measures of peripheral compression, frequency selectivity, and TFS sensitivity relate to speech recognition performance by HI listeners. To determine whether distortions in processing reflected by these psychoacoustic measures are more closely associated with speech deficits in steady-state or modulated noise. Research Design: Normal-hearing (NH) and HI listeners were tested on tasks examining frequency selectivity (notched-noise task), peripheral compression (temporal masking curve task), and sensitivity to TFS information (frequency modulation [FM] detection task) in the presence of random amplitude modulation. Performance was tested at 500, 1000, 2000, and 4000 Hz at several presentation levels. The same listeners were tested on sentence recognition in steady-state and modulated noise at several signal-to-noise ratios. Study Sample: Ten NH and 18 HI listeners were tested. NH listeners ranged in age from 36 to 80 yr (M = 57.6). For HI listeners, ages ranged from 58 to 87 yr (M = 71.8). Results: Scores on the FM detection task at 1 and 2 kHz were significantly correlated with speech scores in both noise conditions. Frequency selectivity and compression measures were not as clearly associated with speech performance. Speech Intelligibility Index (SII) analyses indicated only small differences in speech audibility across subjects for each signal-to-noise ratio (SNR) condition that would predict differences in speech scores no greater than 10% at a given SNR. Actual speech scores varied by as much as 80% across subjects. Conclusions: The results suggest that distorted processing of audible speech cues was a primary factor accounting for differences in speech scores across subjects and that reduced ability to use TFS cues may be an important component of this distortion. The influence of TFS cues on speech scores was comparable in steady-state and modulated noise. Speech recognition was not related to audibility, represented by the SII, once high-frequency sensitivity differences across subjects (beginning at 5 kHz) were removed statistically. This might indicate that high-frequency hearing loss is associated with distortions in processing in lower-frequency regions.

Evaluation of Auditory Enhancement and Auditory Suppression in Listeners With Normal Hearing and Reduced Speech Recognition in Noise

1996 ◽  
Vol 39 (5) ◽  
pp. 947-956 ◽  
Author(s):  
Linda M. Thibodeau
Keyword(s):  
Speech Recognition ◽  
Auditory Processing ◽  
Normal Hearing ◽  
Forward Masking ◽  
Auditory Enhancement ◽  
Auditory Suppression ◽  
Speech Recognition In Noise ◽  
Number Of Individuals ◽  
Normal Speech

A number of individuals complain of difficulties with speech recognition in noise in spite of normal hearing. This has prompted a search for disruptions in other areas of auditory processing that may account for these deficits. Two processes that may be related to speech recognition, auditory suppression and auditory enhancement, were evaluated in five listeners with normal speech recognition in noise (NSRN) and five listeners with reduced speech recognition in noise (RSRN). Although differences between the two groups were not observed for enhanced forward masking, significant differences were observed in two-tone suppression when the duration of the suppressor was varied. Those with RSRN showed greater suppression than those with NSRN when the suppressor onset preceded the masker onset.

scholarly journals Effects of Auditory Training and Remote Microphone Technology on the Behavioral Performance of Children and Young Adults Who Have Autism Spectrum Disorder

2019 ◽  
Vol 30 (05) ◽  
pp. 431-443 ◽  
Author(s):  
Erin C. Schafer ◽  
Kamakshi V. Gopal ◽  
Lauren Mathews ◽  
Skyler Thompson ◽  
Kara Kaiser ◽  
...  
Keyword(s):  
Autism Spectrum Disorder ◽  
Speech Recognition ◽  
Auditory Processing ◽  
Repeated Measures ◽  
Background Noise ◽  
Pure Tone ◽  
Autism Spectrum ◽  
Auditory Training ◽  
Children And Young Adults ◽  
Speech Recognition In Noise

AbstractIndividuals who have a normal pure-tone audiogram but are diagnosed with autism spectrum disorder (ASD) often exhibit poorer speech recognition and auditory processing when compared with neurotypical peers with normal pure-tone audiograms.The purpose of this study was to determine the efficacy and effectiveness of a 12-week auditory processing training (APT) program that was designed to address the deleterious effects of background noise and auditory processing deficits that are common among individuals diagnosed with ASD.A repeated measures design was used.The sample consisted of 15 high-functioning children and young adults who had a formal diagnosis of ASD and who were recruited from local clinics and school districts.Participants completed the 12-week APT program consisting of computerized dichotic training, one-on-one therapist-directed auditory training, and the use of remote microphone (RM) technology at home and in the classroom.Participants completed a comprehensive test battery to assess general auditory processing skills, speech recognition in noise, acceptance of background noise, spatial processing, binaural integration abilities, self-perceived difficulties, and observed behaviors. Testing was conducted before (n = 15), immediately after (n = 15), and 12 weeks after (n = 7) the completion of the APT program. Paired t-tests, repeated measures analysis of variance, or nonparametric tests were used to analyze the data.On average, the APT program significantly enhanced general auditory processing abilities, including binaural integration and subjective listening abilities in the classroom. When the RM was used, significantly improved speech recognition and improved acceptance of background noise was measured relative to a condition with no technology.Following the APT program, the participants exhibited the greatest improvements in testing that required binaural integration and auditory working memory. The use of the RM technology was able to address the deleterious effects of noise on speech recognition in noise and acceptance of noise levels.

scholarly journals An algorithm to improve speech recognition in noise for hearing-impaired listeners

2013 ◽  
Vol 134 (4) ◽  
pp. 3029-3038 ◽  
Author(s):  
Eric W. Healy ◽  
Sarah E. Yoho ◽  
Yuxuan Wang ◽  
DeLiang Wang
Keyword(s):  
Speech Recognition ◽  
Hearing Impaired ◽  
Speech Recognition In Noise
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