Evaluation of Wideband Frequency Responses and Nonlinear Frequency Compression for Children with Cookie-Bite Audiometric Configurations

John, Andrew; Wolfe, Jace; Scollie, Susan; Schafer, Erin C.; Hudson, Mary; Woods, Whitney; Wheeler, Julie; Hudgens, Krystal; Neumann, Sara

doi:10.3766/jaaa.25.10.10

Cited by 11 publications

(21 citation statements)

References 9 publications

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“…Word-final detection of /s, z/ has been shown to improve with other FL schemes, such as FC ( Glista et al., 2009 ; Wolfe et al., 2010 , 2011 ) and FT ( Robinson et al., 2007 ). Conversely, a few studies ( John et al., 2014 ; Wolfe et al., 2015 ) showed no benefit of FC for final /s, z/ detection. The participants in the studies that did not show a benefit had mild high-frequency hearing loss and thus probably had reasonable audibility of the cues used for detection of word-final /s, z/ even without FL.…”

Section: Discussionmentioning

confidence: 97%

Evaluation of a Frequency-Lowering Algorithm for Adults With High-Frequency Hearing Loss

2017

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The objective was to determine the effects of a frequency-lowering algorithm (frequency composition, Fcomp) on consonant identification, word-final /s, z/ detection, the intelligibility of sentences in noise, and subjective benefit, for people with high-frequency hearing loss, including people with dead regions (DRs) in the cochlea. A single-blind randomized crossover design was used. Performance with Bernafon Acriva 9 hearing aids was compared with Fcomp off and Fcomp on. Participants wore the hearing aids in each condition in a counterbalanced order. Data were collected after at least 8 weeks of experience with a condition. Outcome measures were audibility, scores from the speech perception tests, and scores from a questionnaire comparing self-perceived hearing ability with Fcomp off and Fcomp on. Ten adults with mild to severe high-frequency hearing loss (seven with extensive DRs, one with patchy or restricted DRs, and two with no DR) were tested. Fcomp improved the audibility of high-frequency sounds for 6 out of 10 participants. There was no overall effect of Fcomp on consonant identification, but the pattern of consonant confusions varied across conditions and participants. For word-final /s, z/ detection, performance was significantly better with Fcomp on than with Fcomp off. Questionnaire scores showed no differences between conditions. In summary, Fcomp improved word-final /s, z/ detection. No benefit was found for the other measures.

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Section: Discussionmentioning

confidence: 97%

Evaluation of a Frequency-Lowering Algorithm for Adults With High-Frequency Hearing Loss

2017

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“…Findings are mixed on the effect of NFC relative to RBW on speech recognition and potential relationships are complex (Alexander, 2013; Alexander et al, 2014; Arehart et al, 2013; Bentler et al, 2014; Ching et al, 2013; Ellis & Munro, 2015; Glista et al, 2009; Glista et al, 2012; Hopkins et al, 2014; John et al, 2014; Kokx-Ryan et al, 2015; McCreery et al, 2013, 2014; Picou et al, 2015; Simpson et al, 2005, 2006; Souza et al, 2013; Wolfe et al, 2010, 2011, 2015). In general, benefit from NFC is better when access to high frequency sounds is increased with NFC (McCreery et al, 2013, 2014) but spectral distortion is minimized (Souza et al, 2013) as well as in listeners with greater high-frequency hearing loss (Brennan et al, 2014; Glista et al, 2009; Souza et al, 2013; but see Kokx-Ryan et al, 2015).…”

Section: Speech Recognitionmentioning

confidence: 99%

Listening Effort and Speech Recognition with Frequency Compression Amplification for Children and Adults with Hearing Loss

et al. 2017

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Background Nonlinear frequency compression (NFC) can improve the audibility of high frequency sounds by lowering them to a frequency where audibility is better; however, this lowering results in spectral distortion. Consequently, performance is a combination of the effects of increased access to high frequency sounds and the detrimental effects of spectral distortion. Previous work has demonstrated positive benefits of NFC on speech recognition when NFC is set to improve audibility while minimizing distortion. However, the extent to which NFC impacts listening effort is not well understood, especially for children with hearing loss. Purpose To examine the impact of NFC on recognition and listening effort for speech in adults and children with hearing loss. Research Design Within-subject, quasi-experimental study. Participants listened to amplified nonsense words that were 1) frequency-lowered using NFC, 2) low-pass filtered at 5 kHz to simulate the restricted bandwidth (RBW) of conventional hearing aid processing, or 3) low-pass filtered at 10 kHz to simulate extended bandwidth (EBW) amplification. Participants were blinded to the type of processing. Participants’ responses to each nonsense word were analyzed for accuracy and verbal response time (listening effort). Study Sample Fourteen children (8–16 years) and 14 adults (19–65 years) with mild-to-severe sensorineural hearing loss. Intervention Participants listened to speech processed by a hearing aid simulator that amplified input signals to fit a prescriptive target fitting procedure. Results Both the children and adults identified the nonsense words and initial consonants better with EBW and NFC than with RBW. The type of processing did not affect the identification of the vowels or final consonants. There was no effect of age for recognition of the nonsense words, initial consonants, medial vowels or final consonants. Verbal response time did not change significantly with the type of processing or age. Conclusion Both the adults and children demonstrated improved speech recognition with access to the high-frequency sounds in speech. Listening effort as measured by verbal response time was not affected by access to high-frequency sounds.

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“…Fourth, this protocol requires further evaluation in the pediatric population. However, the overall fitting approach described in the Appendix has been developed taking into account the data presented here as well as data collected from children in other studies and case reports that have used both calibrated and uncalibrated fricatives McCreery et al, 2014;Scollie et al, 2014). Further study is required to address these issues in a comprehensive manner.…”

Section: Discussionmentioning

confidence: 99%

“…Specific speech sounds, usually /s/ and / Ð /, are selected because of their varying but high-frequency spectral content and the importance of /s/ to certain grammatical cues in the English language (Stelmachowicz et al, 2004). Verification with these individual sounds may provide the clinician with insight as to the effects of a frequency-lowering scheme on specific phonemes, illustrate the strength and location of the lowering effect, and appears to be related to clinical outcomes in specific test cases (Scollie et al, 2014). However, a variety of specific test signals have been suggested for use, and they vary in important ways.…”

Section: Verification Signalsmentioning

confidence: 99%

Fitting Frequency-Lowering Signal Processing Applying the American Academy of Audiology Pediatric Amplification Guideline: Updates and Protocols

Scollie¹,

Glista²,

Seto³

et al. 2016

J Am Acad Audiol

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Frequency-lowering signal processors have measureable effects on the high-frequency fricative content of speech, particularly female /s/. It is possible to measure these effects either with a simple strategy that presents an isolated simulated fricative and measures the aided frequency response or with a more complex system that extracts fricatives from running speech. For some processors, a more accurate result may be achieved with a running speech system. In listeners, the aided frequency location and sensation level of fricatives may be helpful in predicting whether a specific hearing aid fitting, with or without frequency-lowering, will support access to the fricatives of speech.

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Evaluation of Wideband Frequency Responses and Nonlinear Frequency Compression for Children with Cookie-Bite Audiometric Configurations

Abstract: These results suggest that NLFC does not degrade or improve audibility for and recognition of high-frequency speech sounds as well as sentence recognition in noise when compared with wideband amplification for children with cookie-bite audiometric configurations.

Cited by 11 publications

References 9 publications

Evaluation of a Frequency-Lowering Algorithm for Adults With High-Frequency Hearing Loss

Evaluation of a Frequency-Lowering Algorithm for Adults With High-Frequency Hearing Loss

Listening Effort and Speech Recognition with Frequency Compression Amplification for Children and Adults with Hearing Loss

Fitting Frequency-Lowering Signal Processing Applying the American Academy of Audiology Pediatric Amplification Guideline: Updates and Protocols

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