Just-noticeable differences of fundamental frequency change in Mandarin-speaking children with cochlear implants

2019 ◽  
Vol 145 (3) ◽  
pp. 1879-1880
Author(s):  
Wanting Huang ◽  
Lena Wong ◽  
Fei Chen
Keyword(s):  
Cochlear Implants ◽  
Fundamental Frequency ◽  
Frequency Change

Effects of Fundamental Frequency Contours on Sentence Recognition in Mandarin-Speaking Children With Cochlear Implants

2020 ◽  
Vol 63 (11) ◽  
pp. 3855-3864
Author(s):  
Wanting Huang ◽  
Lena L. N. Wong ◽  
Fei Chen ◽  
Haihong Liu ◽  
Wei Liang
Keyword(s):  
Cochlear Implants ◽  
Fundamental Frequency ◽  
Signal To Noise Ratio ◽  
Lexical Tone ◽  
Signal To Noise ◽  
Sentence Recognition ◽  
Test Conditions ◽  
Age Appropriate ◽  
F0 Contour ◽  
Appropriate Sentences

Purpose Fundamental frequency (F0) is the primary acoustic cue for lexical tone perception in tonal languages but is processed in a limited way in cochlear implant (CI) systems. The aim of this study was to evaluate the importance of F0 contours in sentence recognition in Mandarin-speaking children with CIs and find out whether it is similar to/different from that in age-matched normal-hearing (NH) peers. Method Age-appropriate sentences, with F0 contours manipulated to be either natural or flattened, were randomly presented to preschool children with CIs and their age-matched peers with NH under three test conditions: in quiet, in white noise, and with competing sentences at 0 dB signal-to-noise ratio. Results The neutralization of F0 contours resulted in a significant reduction in sentence recognition. While this was seen only in noise conditions among NH children, it was observed throughout all test conditions among children with CIs. Moreover, the F0 contour-induced accuracy reduction ratios (i.e., the reduction in sentence recognition resulting from the neutralization of F0 contours compared to the normal F0 condition) were significantly greater in children with CIs than in NH children in all test conditions. Conclusions F0 contours play a major role in sentence recognition in both quiet and noise among pediatric implantees, and the contribution of the F0 contour is even more salient than that in age-matched NH children. These results also suggest that there may be differences between children with CIs and NH children in how F0 contours are processed.

Recognition of English spoken stressed syllables based on natural language processing and endpoint detection algorithm

2020 ◽  
Vol 39 (4) ◽  
pp. 5713-5724
Author(s):  
Zhang Qiwen
Keyword(s):  
Fundamental Frequency ◽  
Language Processing ◽  
Evaluation Method ◽  
Spoken Language ◽  
Detection Algorithm ◽  
Language Learner ◽  
Frequency Change ◽  
Good Reliability ◽  
Recognition Model ◽  
Stress Recognition

The traditional stress evaluation method cannot describe the chaotic characteristics of speech signals well or cannot fully approximate the complex nonlinear relationship between features, so that the exact location of stress cannot be accurately determined. In order to improve the recognition of spoken English stressed syllables, this study established a word stress recognition model. The model can accurately recognize the stressed syllables in the words and calculate the fundamental frequency change trajectory of the language tones using the fundamental frequency scaling function. According to this trajectory and using the time domain fundamental frequency synchronization superposition algorithm to modify the fundamental frequency parameters in the DIVA model motion instruction, the spoken language learner can master the rhythm in the spoken language. In addition, this study sets up experiments to study the effects of the model. The results show that the stress recognition model established in this paper has good reliability and stability.

scholarly journals The use of fundamental frequency for lexical segmentation in listeners with cochlear implants

2009 ◽  
Vol 125 (6) ◽  
pp. EL236-EL241 ◽  
Author(s):  
Stephanie Spitzer ◽  
Julie Liss ◽  
Tony Spahr ◽  
Michael Dorman ◽  
Kaitlin Lansford
Keyword(s):  
Cochlear Implants ◽  
Fundamental Frequency ◽  
Lexical Segmentation

scholarly journals Basic Measures of Prosody in Spontaneous Speech of Children With Early and Late Cochlear Implantation

2018 ◽  
Vol 61 (12) ◽  
pp. 3075-3094 ◽  
Author(s):  
Daan J. van de Velde ◽  
Johan H. M. Frijns ◽  
Mieke Beers ◽  
Vincent J. van Heuven ◽  
Claartje C. Levelt ◽  
...  
Keyword(s):  
Speech Production ◽  
Cochlear Implants ◽  
Fundamental Frequency ◽  
Outcome Measures ◽  
Cochlear Implantation ◽  
Spontaneous Speech ◽  
Spectral Measures ◽  
Temporal Dimension ◽  
Temporal Measures ◽  
Over Time

PurposeRelative to normally hearing (NH) peers, the speech of children with cochlear implants (CIs) has been found to have deviations such as a high fundamental frequency, elevated jitter and shimmer, and inadequate intonation. However, two important dimensions of prosody (temporal and spectral) have not been systematically investigated. Given that, in general, the resolution in CI hearing is best for the temporal dimension and worst for the spectral dimension, we expected this hierarchy to be reflected in the amount of CI speech's deviation from NH speech. Deviations, however, were expected to diminish with increasing device experience.MethodOf 9 Dutch early- and late-implanted (division at 2 years of age) children and 12 hearing age-matched NH controls, spontaneous speech was recorded at 18, 24, and 30 months after implantation (CI) or birth (NH). Six spectral and temporal outcome measures were compared between groups, sessions, and genders.ResultsOn most measures, interactions of Group and/or Gender with Session were significant. For CI recipients as compared with controls, performance on temporal measures was not in general more deviant than spectral measures, although differences were found for individual measures. The late-implanted group had a tendency to be closer to the NH group than the early-implanted group. Groups converged over time.ConclusionsResults did not support the phonetic dimension hierarchy hypothesis, suggesting that the appropriateness of the production of basic prosodic measures does not depend on auditory resolution. Rather, it seems to depend on the amount of control necessary for speech production.

Changes in the male voice at puberty: vocal fold length and its relationship to the fundamental frequency of the voice

1998 ◽  
Vol 112 (5) ◽  
pp. 451-454 ◽  
Author(s):  
Meredydd Harries ◽  
Sarah Hawkins ◽  
Jeremy Hacking ◽  
Ieuan Hughes
Keyword(s):  
Fundamental Frequency ◽  
Vocal Fold ◽  
Gradual Increase ◽  
Vocal Folds ◽  
Frequency Change ◽  
Male Voice ◽  
Pubertal Stage ◽  
Sudden Drop ◽  
Ultrasound Measurements ◽  
The Voice

AbstractUltrasound measurements of the vocal folds were taken for a number of boys passing through puberty. The boys were grouped according to their pubertal stage as defined by Tanner and there was a gradual increase in the length of the vocal folds as puberty progressed. The fundamental frequency of the boys' speaking voice was recorded via laryngography and a good correlation between the length of the vocal folds and the frequency of the voice was seen. The sudden drop in frequency seen between Tanner stages 3 and 4 did not correlate with similar changes in the length of the vocal folds at this time but stroboscopic findings suggest a change in the structure and mass of the vocal folds at this time of maximum frequency change.

Use of Visual Feedback to Treat Negative Intraoral Air Pressures of Preschoolers With Cochlear Implants

2000 ◽  
Vol 9 (1) ◽  
pp. 21-35 ◽  
Author(s):  
Maureen B. Higgins ◽  
Elizabeth A. McCleary ◽  
Laura Schulte
Keyword(s):  
Speech Perception ◽  
Speech Production ◽  
Cochlear Implants ◽  
Fundamental Frequency ◽  
Visual Feedback ◽  
The Other ◽  
Deaf Children ◽  
Frequent Use ◽  
Before And After

The primary purpose of this study was to determine if negative intraoral air pressures (−P o ) produced by young deaf children can be treated effectively with visual feedback. We used two forms of visual feedback. One was a display of the P o signal on an oscilloscope, and the other was movement of cellophane streamers placed in front of the children’s mouths. Participants were two 5-year-old boys who had been using cochlear implants (CIs) for less than 6 months. Both children were congenitally deafened and had very limited speech production and perception skills. In addition to frequent usage of −P o , both children exhibited deviant phonatory behaviors, so phonatory goals were incorporated into treatment. The magnitude and direction of P o was monitored, as well as fundamental frequency and electroglottograph cycle width. Data were collected at baseline, before and after treatment sessions, and 7 weeks after termination of treatment. One child responded well to treatment of −P o with both forms of visual feedback, and progress was maintained at follow-up. For the other child, +P o occurred more frequently as the study progressed, and he rarely produced −P o by the end of the investigation. However, because changes were evident in baseline as well as during treatment, it is difficult to attribute his more frequent use of +P o specifically to treatment. The phonation of the two children changed in ways that were consistent with their phonatory goals, although the degree of change was not always significant. Change was more evident for phonatory behaviors that could be shaped with visual feedback. Although both children exhibited some undesirable speech/voice behaviors in response to visual feedback, there was no evidence of long-lasting mislearning. Although our data are limited, it appears that treatment of −P o can be efficacious for some young children with CIs, even those with very poor speech perception and speech production skills. Further, treatment of −P o can be incorporated effectively with other speech production goals.

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