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Vowel perception

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https://www.readbyqxmd.com/read/28395548/incorporating-ceiling-effects-during-analysis-of-speech-perception-data-from-a-paediatric-cochlear-implant-cohort
#1
Hanneke Bruijnzeel, Guido Cattani, Inge Stegeman, Vedat Topsakal, Wilko Grolman
OBJECTIVE: To compare speech perception between children with a different age at cochlear implantation. DESIGN: We evaluated speech perception by comparing consonant-vowel-consonant (auditory) (CVC(A)) scores at five-year follow-up of children implanted between 1997 and 2010. The proportion of children from each age-at-implantation group reaching the 95%CI of CVC(A) ceiling scores (>95%) was calculated to identify speech perception differences masked by ceiling effects...
April 10, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/28382120/outcomes-of-late-implantation-in-usher-syndrome-patients
#2
Ana Cristina H Hoshino, Agustina Echegoyen, Maria Valéria Schmidt Goffi-Gomez, Robinson Koji Tsuji, Ricardo Ferreira Bento
Introduction Usher syndrome (US) is an autosomal recessive disorder characterized by hearing loss and progressive visual impairment. Some deaf Usher syndrome patients learn to communicate using sign language. During adolescence, as they start losing vision, they are usually referred to cochlear implantation as a salvage for their new condition. Is a late implantation beneficial to these children? Objective The objective of this study is to describe the outcomes of US patients who received cochlear implants at a later age...
April 2017: International Archives of Otorhinolaryngology
https://www.readbyqxmd.com/read/28372061/seeing-closing-gesture-of-articulators-affects-speech-perception-of-geminate-consonants
#3
Takayuki Arai, Eri Iwagami, Emi Yanagisawa
This study tests the perception of geminate consonants for native speakers of Japanese using audio and visual information. A previous study showed that formant transitions associated with the closing gesture of articulators at the end of a preceding vowel are crucial for perception of stop geminate consonants in Japanese. In addition, this study further focuses on visual cues, to test if seeing the closing gesture affects perception of geminate consonants. Based on a perceptual experiment, it is observed that visual information can compensate for a deficiency in geminate consonant auditory information, such as formant transitions...
March 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28372055/assessing-the-efficacy-of-hearing-aid-amplification-using-a-phoneme-test
#4
Christoph Scheidiger, Jont B Allen, Torsten Dau
Consonant-vowel (CV) perception experiments provide valuable insights into how humans process speech. Here, two CV identification experiments were conducted in a group of hearing-impaired (HI) listeners, using 14 consonants followed by the vowel /ɑ/. The CVs were presented in quiet and with added speech-shaped noise at signal-to-noise ratios of 0, 6, and 12 dB. The HI listeners were provided with two different amplification schemes for the CVs. In the first experiment, a frequency-independent amplification (flat-gain) was provided and the CVs were presented at the most-comfortable loudness level...
March 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28362674/human-frequency-following-responses-to-vocoded-speech
#5
Saradha Ananthakrishnan, Xin Luo, Ananthanarayan Krishnan
OBJECTIVES: Vocoders offer an effective platform to simulate the effects of cochlear implant speech processing strategies in normal-hearing listeners. Several behavioral studies have examined the effects of varying spectral and temporal cues on vocoded speech perception; however, little is known about the neural indices of vocoded speech perception. Here, the scalp-recorded frequency following response (FFR) was used to study the effects of varying spectral and temporal cues on brainstem neural representation of specific acoustic cues, the temporal envelope periodicity related to fundamental frequency (F0) and temporal fine structure (TFS) related to formant and formant-related frequencies, as reflected in the phase-locked neural activity in response to vocoded speech...
March 30, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28353522/effects-of-simulated-hearing-loss-on-bilingual-children-s-consonant-recognition-in-noise
#6
Kanae Nishi, Andrea C Trevino, Lydia Rosado Rogers, Paula García, Stephen T Neely
OBJECTIVE: This study investigated the possible impact of simulated hearing loss on speech perception in Spanish-English bilingual children. To avoid confound between individual differences in hearing-loss configuration and linguistic experience, threshold-elevating noise simulating a mild-to-moderate sloping hearing loss was used with normal-hearing listeners. The hypotheses were that: (1) bilingual children can perform similarly to English-speaking monolingual peers in quiet; (2) for both bilingual and monolingual children, noise and simulated hearing loss would have detrimental impacts consistent with their acoustic characteristics (i...
March 28, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28338496/infants-and-adults-use-of-temporal-cues-in-consonant-discrimination
#7
Laurianne Cabrera, Lynne Werner
OBJECTIVES: Adults can use slow temporal envelope cues, or amplitude modulation (AM), to identify speech sounds in quiet. Faster AM cues and the temporal fine structure, or frequency modulation (FM), play a more important role in noise. This study assessed whether fast and slow temporal modulation cues play a similar role in infants' speech perception by comparing the ability of normal-hearing 3-month-olds and adults to use slow temporal envelope cues in discriminating consonants contrasts...
March 23, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28334346/directional-asymmetries-in-vowel-perception-of-adult-nonnative-listeners-do-not-change-over-time-with-language-experience
#8
Buddhamas Pralle Kriengwatana, Paola Escudero
Purpose: This study tested an assumption of the Natural Referent Vowel (Polka & Bohn, 2011) framework, namely, that directional asymmetries in adult vowel perception can be influenced by language experience. Method: Data from participants reported in Escudero and Williams (2014) were analyzed. Spanish participants categorized the Dutch vowels /aː/ and /ɑ/ in 2 separate sessions: before and after vowel distributional training. Sessions were 12 months apart. Categorization was assessed using the XAB task, where on each trial participants heard 3 sounds sequentially (first X, then A, then B) and had to decide whether X was more similar to A or B...
March 23, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28326992/thai-rate-varied-vowel-length-perception-and-the-impact-of-musical-experience
#9
Angela Cooper, Yue Wang, Richard Ashley
Musical experience has been demonstrated to play a significant role in the perception of non-native speech contrasts. The present study examined whether or not musical experience facilitated the normalization of speaking rate in the perception of non-native phonemic vowel length contrasts. Native English musicians and non-musicians (as well as native Thai control listeners) completed identification and AX (same-different) discrimination tasks with Thai vowels contrasting in phonemic length at three speaking rates...
March 2017: Language and Speech
https://www.readbyqxmd.com/read/28326988/discrimination-and-identification-of-a-third-formant-frequency-cue-to-place-of-articulation-by-young-children-and-adults
#10
Kelly Richardson, Joan E Sussman
Typically-developing children, 4 to 6 years of age, and adults participated in discrimination and identification speech perception tasks using a synthetic consonant-vowel continuum ranging from /da/ to /ga/. The seven-step synthetic /da/-/ga/ continuum was created by adjusting the first 40 ms of the third formant frequency transition. For the discrimination task, listeners participated in a Change/No-Change paradigm with four different stimuli compared to the endpoint-1 /da/ token. For the identification task, listeners labeled each token along the /da/-/ga/ continuum as either "DA" or "GA...
March 2017: Language and Speech
https://www.readbyqxmd.com/read/28281035/acoustic-context-alters-vowel-categorization-in-perception-of-noise-vocoded-speech
#11
Christian E Stilp
Normal-hearing listeners' speech perception is widely influenced by spectral contrast effects (SCEs), where perception of a given sound is biased away from stable spectral properties of preceding sounds. Despite this influence, it is not clear how these contrast effects affect speech perception for cochlear implant (CI) users whose spectral resolution is notoriously poor. This knowledge is important for understanding how CIs might better encode key spectral properties of the listening environment. Here, SCEs were measured in normal-hearing listeners using noise-vocoded speech to simulate poor spectral resolution...
March 9, 2017: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/28268130/curbing-the-metallic-mode-in-between-an-empirical-study-qualifying-and-categorizing-restrained-sounds-known-as-curbing-based-on-audio-perception-laryngostroboscopic-imaging-acoustics-ltas-and-egg
#12
Mathias Aaen Thuesen, Julian McGlashan, Cathrine Sadolin
OBJECTIVES: This study aims to study the categorization Curbing from the pedagogical method Complete Vocal Technique as a reduced metallic mode compared with the full metallic modes Overdrive and Edge by means of audio perception, laryngostroboscopic imaging, acoustics, long-term average spectrum (LTAS), and electroglottography (EGG). METHODS: Twenty singers were recorded singing sustained vowels in a restrained character known as Curbing. Two studies were performed: (1) laryngostroboscopic examination using a videonasoendoscopic camera system and the Laryngostrobe program; and (2) simultaneous recording of EGG and acoustic signals using Speech Studio...
March 3, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28267801/t-complex-measures-in-bilingual-spanish-english-and-turkish-german-children-and-monolingual-peers
#13
Tanja Rinker, Valerie L Shafer, Markus Kiefer, Nancy Vidal, Yan H Yu
BACKGROUND: Lateral temporal neural measures (Na and T-complex Ta and Tb) of the auditory evoked potential (AEP) index maturation of auditory/speech processing. These measures are also sensitive to language experience in adults. This paper examined neural responses to a vowel sound at temporal electrodes in four- to five-year-old Spanish-English bilinguals and English monolinguals and in five- to six-year-old Turkish-German bilinguals and German monolinguals. The goal was to determine whether obligatory AEPs at temporal electrode sites were modulated by language experience...
2017: PloS One
https://www.readbyqxmd.com/read/28253707/simultaneous-and-forward-masking-of-vowels-and-stop-consonants-effects-of-age-hearing-loss-and-spectral-shaping
#14
Daniel Fogerty, William J Bologna, Jayne B Ahlstrom, Judy R Dubno
Fluctuating noise, common in everyday environments, has the potential to mask acoustic cues important for speech recognition. This study examined the extent to which acoustic cues for perception of vowels and stop consonants differ in their susceptibility to simultaneous and forward masking. Younger normal-hearing, older normal-hearing, and older hearing-impaired adults identified initial and final consonants or vowels in noise-masked syllables that had been spectrally shaped. The amount of shaping was determined by subjects' audiometric thresholds...
February 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28253684/predicting-consonant-recognition-and-confusions-in-normal-hearing-listeners
#15
Johannes Zaar, Torsten Dau
The perception of consonants in background noise has been investigated in various studies and was shown to critically depend on fine details in the stimuli. In this study, a microscopic speech perception model is proposed that represents an extension of the auditory signal processing model by Dau, Kollmeier, and Kohlrausch [(1997). J. Acoust. Soc. Am. 102, 2892-2905]. The model was evaluated based on the extensive consonant perception data set provided by Zaar and Dau [(2015). J. Acoust. Soc. Am. 138, 1253-1267], which was obtained with normal-hearing listeners using 15 consonant-vowel combinations mixed with white noise...
February 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28253672/contribution-of-formant-frequency-information-to-vowel-perception-in-steady-state-noise-by-cochlear-implant-users
#16
Elad Sagi, Mario A Svirsky
Cochlear implant (CI) recipients have difficulty understanding speech in noise even at moderate signal-to-noise ratios. Knowing the mechanisms they use to understand speech in noise may facilitate the search for better speech processing algorithms. In the present study, a computational model is used to assess whether CI users' vowel identification in noise can be explained by formant frequency cues (F1 and F2). Vowel identification was tested with 12 unilateral CI users in quiet and in noise. Formant cues were measured from vowels in each condition, specific to each subject's speech processor...
February 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28253671/autocorrelation-factors-and-intelligibility-of-japanese-monosyllables-in-individuals-with-sensorineural-hearing-loss
#17
Ryota Shimokura, Sakie Akasaka, Tadashi Nishimura, Hiroshi Hosoi, Toshie Matsui
Some Japanese monosyllables contain consonants that are not easily discernible for individuals with sensorineural hearing loss. However, the acoustic features that make these monosyllables difficult to discern have not been clearly identified. Here, this study used the autocorrelation function (ACF), which can capture temporal features of signals, to clarify the factors influencing speech intelligibility. For each monosyllable, five factors extracted from the ACF [Φ(0): total energy; τ1 and ϕ1: delay time and amplitude of the maximum peak; τe: effective duration; Wϕ(0): spectral centroid], voice onset time, speech intelligibility index, and loudness level were compared with the percentage of correctly perceived articulations (144 ears) obtained by 50 Japanese vowel and consonant-vowel monosyllables produced by one female speaker...
February 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28253661/consonant-categorization-exhibits-a-graded-influence-of-surrounding-spectral-context
#18
Christian E Stilp, Ashley A Assgari
When spectral properties differ across successive sounds, this difference is perceptually magnified, resulting in spectral contrast effects (SCEs). Recently, Stilp, Anderson, and Winn [(2015) J. Acoust. Soc. Am. 137(6), 3466-3476] revealed that SCEs are graded: more prominent spectral peaks in preceding sounds produced larger SCEs (i.e., category boundary shifts) in categorization of subsequent vowels. Here, a similar relationship between spectral context and SCEs was replicated in categorization of voiced stop consonants...
February 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28225849/effect-of-performance-time-of-the-high-pitched-blowing-vocal-exercise-in-the-voice-of-women
#19
Fabíola Santos Moreira, Ana Cristina Côrtes Gama
Purpose: To analyze the results of the runtimes of one, three, five, and seven minutes of the high-pitched blowing vocal exercise in women without voice complaints and with dysphonia and vocal nodules. Methods: This is an experimental study with a consecutive and convenience sample of 60 women divided into two groups: 30 participants with dysphonia caused by vocal fold nodules (study group - SG) and 30 participants without vocal complaints (control group - CG). All participants performed the high-pitched blowing vocal exercise for one, three, five, and seven minutes...
February 16, 2017: CoDAS
https://www.readbyqxmd.com/read/28213999/application-of-the-acoustic-voice-quality-index-for-objective-measurement-of-dysphonia-severity
#20
Faustino Núñez-Batalla, Estefanía Díaz-Fresno, Andrea Álvarez-Fernández, Gabriela Muñoz Cordero, José Luis Llorente Pendás
INTRODUCTION: Over the past several decades, many acoustic parameters have been studied as sensitive to and to measure dysphonia. However, current acoustic measures might not be sensitive measures of perceived voice quality. A meta-analysis which evaluated the relationship between perceived overall voice quality and several acoustic-phonetic correlates, identified measures that do not rely on the extraction of the fundamental period, such the measures derived from the cepstrum, and that can be used in sustained vowel as well as continuous speech samples...
February 14, 2017: Acta Otorrinolaringológica Española
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