Measures Of Fundamental Frequency Research Articles

Validity of Acoustic Measures Obtained Using Various Recording Methods Including Smartphones With and Without Headset Microphones.

The goal of this study was to assess various recording methods, including combinations of high- versus low-cost microphones, recording interfaces, and smartphones in terms of their ability to produce commonly used time- and spectral-based voice measurements. Twenty-four vowel samples representing a diversity of voice quality deviations and severities from a wide age range of male and female speakers were played via a head-and-thorax model and recorded using a high-cost, research standard GRAS 40AF (GRAS Sound & Vibration) microphone and amplification system. Additional recordings were made using various combinations of headset microphones (AKG C555 L [AKG Acoustics GmbH], Shure SM35-XLR [Shure Incorporated], AVID AE-36 [AVID Products, Inc.]) and audio interfaces (Focusrite Scarlett 2i2 [Focusrite Audio Engineering Ltd.] and PC, Focusrite and smartphone, smartphone via a TRRS adapter), as well as smartphones direct (Apple iPhone 13 Pro, Google Pixel 6) using their built-in microphones. The effect of background noise from four different room conditions was also evaluated. Vowel samples were analyzed for measures of fundamental frequency, perturbation, cepstral peak prominence, and spectral tilt (low vs. high spectral ratio). Results show that a wide variety of recording methods, including smartphones with and without a low-cost headset microphone, can effectively track the wide range of acoustic characteristics in a diverse set of typical and disordered voice samples. Although significant differences in acoustic measures of voice may be observed, the presence of extremely strong correlations (rs > .90) with the recording standard implies a strong linear relationship between the results of different methods that may be used to predict and adjust any observed differences in measurement results. Because handheld smartphone distance and positioning may be highly variable when used in actual clinical recording situations, smartphone + a low-cost headset microphone is recommended as an affordable recording method that controls mouth-to-microphone distance and positioning and allows both hands to be available for manipulation of the smartphone device.

Influence of vowels on note pitching in a cappella vocal quartet performance

This study aimed to investigate the relationship between the fundamental frequencies employed when singing different vowels on the same pitch for each member in turn of a professional soprano, alto, tenor, bass (SATB) a cappella vocal quartet in terms of the measured fundamental frequency during the production of a set of individual vowels within a four-part carrier phrase. This is an experimental singing production study on the tuning of vowels in the context of a cappella quartet singing. To facilitate this, one singer at a time in a professional a cappella vocal quartet changed the vowel they are singing on a single note concurrent with a consonant a cappella triad being sustained by the other three singers singing a fixed vowel. The first few bars of the a cappella anthem "If ye love me" by Thomas Tallis provided a carrier phrase that ended with a held chord on the chord on the word "me" by three singers against which the remaining singer produced a set of different vowels on their note of the chord. This is carried out for each of the four singers. The hypothesis being investigated is to remain accurately in-tune; fundamental frequency should be varied depending on the vowel being sung. Fundamental frequencies were measured using electrolaryngographs to ensure that there was no acoustic interference that could affect the accuracy of the fundamental frequency measurements if they were obtained from the audio output. The results provide clear evidence of changes being made to the fundamental frequencies of different vowels in an a cappella quartet context, and these changes confirm variations found elsewhere relating to the perceived pitches of different vowels. Measurable and consistent fundamental frequency variations occur when one part tunes different vowels against a reference chord sung by the other three singers in a choral quartet context on a fixed vowel. This has a direct consequence for tuning in a cappella choral music. The importance of carefully tuning individual notes for different vowels in a cappella choral singing requires focused listening to the pitches of the sounds being produced by the other singers in the choir. Usually, all parts are singing common vowels where it is important that the vowels are matched by being carefully blended together and tuning is aimed at being beat-free in just intonation. When compositions require parts to sing different vowels, both intrinsic (production related) and auditory (hearing related) pitch variations become relevant and challenge beat-free tuning.

Acoustic analysis of normal voice patterns in North Indian population

To evaluate the characteristics of voice of the north Indian Hindi speakers across the adult population based on acoustic measures of fundamental frequency (F0), jitter, shimmer, and harmonic-to-noise ratio and to observe the gender differences in these measures. A total of 62 (39 men and 23 women) voice samples from healthy normal voiced adults aged 18-40years were included. Mean fundamental frequency in males and females in the age group 18-25 is 156 and 262, respectively. Similarly mean fundamental frequency in males and females in the age group 26-40 is 141 and 253, respectively. Shimmer in the women (18-25) group and jitter in the men (26-40) group is not normally distributed. Rest all parameters were normally distributed across all groups. Fundamental frequency showed statistically significant gender differences in both the age groups. Jitter and shimmer variables were statistically significant when compared between the two genders in the age group 26-40. Harmonic-to-noise ratio showed a statistically significant difference in the age group 18-25 among both genders. There exists statistically significant negative correlation between smoothed cepstral peak prominence and fundamental frequency, Pearson's r -0.479 (P-value <0.001). All acoustic parameters except intensity show a significant gender difference; however, the participants across each gender revealed no difference in acoustic parameters when segregated into age groups.

Impact of orthognathic surgery on voice and speech: a systematic review and meta-analysis.

Orthognathic surgical procedures, whether in one or both jaws, can affect structures regarding the articulation and resonance of voice and speech. Evaluating the impact of orthognathic surgery on voice and speech performance in individuals with skeletal dentofacial disharmony. Word combinations and truncations were adapted for the following electronic databases: EMBASE, PubMed/Medline, Scopus, Web of Science, Cochrane Library, and Latin American and Caribbean Literature in Health Sciences (LILACS), and grey literature. The research included studies on nonsyndromic adults with skeletal dentofacial disharmony undergoing orthognathic surgery. These studies assessed patients before and after surgery or compared them with individuals with good facial harmony using voice and speech parameters through validated protocols. Two independent reviewers performed all stages of the review. The Joanna Briggs Institute tool was used to assess risk of bias in the cohort studies, and ROBINS-I was used for nonrandomized clinical trials. The authors also performed a meta-analysis of random effects. A total of 1163 articles were retrieved after the last search, of which 23 were read in full. Of these, four were excluded, totalling 19 articles for quantitative synthesis. When comparing the pre- and postoperative periods, both for fundamental frequency, formants, and jitter and shimmer perturbation measures, orthognathic surgery did not affect vowel production. According to the articles, the main articulatory errors associated with skeletal dentofacial disharmonies prior to surgery were distortions of fricative sounds, mainly/s/ and/z/. Orthognathic surgery may have little or no impact on vocal characteristics during vowel production. However, due to the confounding factors involved, estimates are inconclusive. The most prevalent articulatory disorders in the preoperative period were distortion of the fricative phonemes/s/ and/z/. However, further studies must be carried out to ensure greater robustness to these findings. PROSPERO (CRD42022291113).

Voice analytics in the wild: Validity and predictive accuracy of common audio-recording devices.

The use of voice recordings in both research and industry practice has increased dramatically in recent years-from diagnosing a COVID-19 infection based on patients' self-recorded voice samples to predicting customer emotions during a service center call. Crowdsourced audio data collection in participants' natural environment using their own recording device has opened up new avenues for researchers and practitioners to conduct research at scale across a broad range of disciplines. The current research examines whether fundamental properties of the human voice are reliably and validly captured through common consumer-grade audio-recording devices in current medical, behavioral science, business, and computer science research. Specifically, this work provides evidence from a tightly controlled laboratory experiment analyzing 1800 voice samples and subsequent simulations that recording devices with high proximity to a speaker (such as a headset or a lavalier microphone) lead to inflated measures of amplitude compared to a benchmark studio-quality microphone while recording devices with lower proximity to a speaker (such as a laptop or a smartphone in front of the speaker) systematically reduce measures of amplitude and can lead to biased measures of the speaker's true fundamental frequency. We further demonstrate through simulation studies that these differences can lead to biased and ultimately invalid conclusions in, for example, an emotion detection task. Finally, we outline a set of recording guidelines to ensure reliable and valid voice recordings and offer initial evidence for a machine-learning approach to biascorrection in the case of distorted speech signals.

Comparison of In-Person and Online Recordings in the Clinical Teleassessment of Speech Production: A Pilot Study

In certain circumstances, speech and language therapy is proposed in telepractice as a practical alternative to in-person services. However, little is known about the minimum quality requirements of recordings in the teleassessment of motor speech disorders (MSD) utilizing validated tools. The aim here is to examine the comparability of offline analyses based on speech samples acquired from three sources: (1) in-person recordings with high quality material, serving as the baseline/gold standard; (2) in-person recordings with standard equipment; (3) online recordings from videoconferencing. Speech samples were recorded simultaneously from these three sources in fifteen neurotypical speakers performing a screening battery of MSD and analyzed by three speech and language therapists. Intersource and interrater agreements were estimated with intraclass correlation coefficients on seventeen perceptual and acoustic parameters. While the interrater agreement was excellent for most speech parameters, especially on high quality in-person recordings, it decreased in online recordings. The intersource agreement was excellent for speech rate and mean fundamental frequency measures when comparing high quality in-person recordings to the other conditions. The intersource agreement was poor for voice parameters, but also for perceptual measures of intelligibility and articulation. Clinicians who plan to teleassess MSD should adapt their recording setting to the parameters they want to reliably interpret.

Finger Kazoo Intensive Short-term Vocal Therapy: Vocal and Aerodynamic Measurements in Female Teachers

Objectiveto verify the effect after short-term intensive therapy with the Finger Kazoo technique on vocal and aerodynamic measures of dysphonic female teachers. Methodblind randomized clinical trial. Fifteen female teachers without structural disorders of vocal folds and nine with vocal nodules participated in the study groups. Yet, nine female teachers without structural disorders and eight with vocal nodules in the control groups. The following variables were measured pre and post-therapy: minimum and maximum fundamental frequency: forced vital capacity; simple phonic coefficient; compound phonic coefficient; ratio between maximum phonation time of /a/ and expected maximum phonation time. Resultsno statistical significance was observed in the intra and intergroup analyses in any of the measures. Conclusionin this group of female teachers, it was not possible to show a positive effect of short-term and intensive therapy with the Finger Kazoo technique on the vocal measures of minimum and maximum fundamental frequency, forced vital capacity, simple phonic coefficient, compound phonic coefficient, and the relationship between maximum phonation time of /a/ and expected maximum phonation time.

Developing a voice monitoring smartphone app: Acoustic acquisition and processing considerations

With the advent of smartphone technology, there has been an increase in at-home health monitoring. Yet, there are few applications (apps) available to track voice acoustics for those with voice disorders. Therefore, we completed two investigations into the acquisition and processing of the acoustic signal to help develop a voice monitoring app. Study 1: We investigated how microphone distance and phone tilt impact the accuracy of acoustic measures of voice. A total of 58 participants with (n = 47) and without (n = 11) voice disorders completed speech tasks of sustained vowels and the rainbow passage. Concurrent recordings were collected using the participant’s phone, as well as a stationary headset microphone for comparison. We determined that the voice measures of fundamental frequency (Hz), voicing duration (seconds), and cepstral peak prominence (dB) were impervious to phone distance and tilt. Study 2: Focusing on the three acoustic measures from study 1, we investigated the correspondence between acoustic measures attained with clinically available software (e.g., Praat) and those from our own lab-developed algorithms specialized for on-app processing. Preliminary results show strong relationships (r &amp;gt; .90) between the different processing techniques. Further work is needed to understand how participant-specific factors (age, dysphonia severity) may improve algorithm accuracy.

Voice Load in a Music Student Teacher: A Quantitative Case Study in Voice Dosimetry

ABSTRACT The authors examined the voice use of a student teacher in vocal music in the initial 20 instructional meetings of a choir class over two months in a high school choir class. The purpose was to explore voice load during one daily period in the music classroom at the beginning of the student teaching placement to evaluate how and whether voice use changes in the early stage of teacher preparation. Results indicated that measures of fundamental frequency (F0), phonation time, phonation volume, and background noise level varied across measurement periods and according to student teacher activities. As a percentage of the instructional period, phonation time ranged 1.9% to 42%, and was largest in measurement periods beyond the initial days of student teaching. Teacher volume increased modestly across the data collection. Implications are suggested including increased confidence in the student teacher or increased voice misuse by the student teacher.

Acoustic cues associated with Korean sarcastic utterances produced by right- and left-hemisphere damaged individuals

PurposeSarcasm, prevalent in everyday conversation, refers to the use of words that express negative attitudes toward persons or events. Acoustic cues associated with sarcasm have been reported to vary across studies and the relative importance of particular acoustic parameters for signaling sarcasm has not been fully determined. The hemispheric specialization for the production of acoustic cues has been a matter of controversy. This study investigated the possible prosodic cues associated with Korean sarcastic utterances and the differential effect of left hemisphere damage (LHD) or right hemisphere damage (RHD) on the production of acoustic features of Korean sarcastic utterances. MethodTwenty one native speakers of Korean (7 individuals with LHD, 7 individuals with RHD, and 7 healthy controls (HC)) produced six Korean utterances in two different modes: sarcastic and literal. Utterances validated by sarcasm ratings by native listeners were analyzed acoustically utilizing durational and fundamental frequency (F0) measures. ResultsListeners’ ratings and acoustic analyses indicated that sarcastic utterances in Korean were produced with a combination of multiple acoustic cues. Discriminant function analyses and multiple linear regression showed that LHD and RHD differentially affected the production of acoustic cues associated with sarcasm. ConclusionLHD negatively affects the production of durational cues, while RHD negatively affects the production of F0 cues.

An analysis of prosodic boundaries across speaking styles in two varieties of German

Previous research has shown that differences in the marking of prosodic boundaries exist not only between varieties of the same language, but also between speaking styles of the same variety. Our aim is to gain insights into how these two factors interact in the case of German and Austrian German read and conversational speech. Analysing four acoustic cues, representing durational and fundamental frequency (f0) measures, we observed that pause duration was the strongest cue to prosodic boundaries and that f0 reset was the weakest, in both varieties and across speaking styles. In read speech however, we noticed differences between the two varieties in the weighting given to the four cues. We then employed the four investigated acoustic cues for the annotation of the less-resourced variety, by examining ways of exploiting resources from the more well-resourced variety. Testing three automatic approaches for boundary detection, we obtained an overall high performance: 82.4% and 76.6% F-score for read and conversational speech, respectively. Moreover, our results showed that training on more data from the well-resourced variety did not outperform the same system trained on less data from the target variety.

Acoustic voice and spectrographic measures in children with the phonological process of devoicing

IntroductionChildren with speech sound disorders (SSDs) who present the devoicing of plosive and/or fricative sounds may have difficulties with glottal respiratory control. ObjectiveTo analyze acoustic vocal measures, spectrographic aspects and the risk of dysphonia among children with devoicing SDDs and compare the results with those of other groups of children. MethodsTwenty-five boys aged between six and 12 years participated. They were divided into four groups: the SSD-devoicing (PPDG), dysphonia (DG), SSDs other than devoicing (PPOG) and control groups (CG). The vocal tasks were recorded, and perceptual-auditory and acoustic voice analyses were performed. The children's parents answered questions about voice-related aspects (to determine a dysphonia risk score). All data were compared among the groups. ResultsDue to the sample size, an effect size analysis was considered, and the results showed possible differences between the PPDG and the other groups in measures of fundamental frequency (F0), jitter, shimmer, harmonic-to-noise ratio, maximum frequency of harmonic definition and dysphonia risk score. ConclusionsThe PPDG showed a high F0 and abnormal jitter and shimmer values. Although the voices of the children in this group had more harmonics than noise, the maximum frequency for defining the harmonics was very restricted. The PPDG had the lowest dysphonia risk score among all of the groups. Variations in F0, jitter and shimmer may indicate difficulties with controlling vocal adjustments, which appear to be hyperfunctional and not to impact vocal projection or voicing.

Vocal Characteristics of Children With Short Stature Before and After Growth Hormone Treatment

To evaluate the vocal characteristics of children with short stature before and 12 months after growth hormone treatment. This analytical, observational cohort study included 23 children (age 5-11 years) diagnosed with short stature. Children in the short stature group (SSG) were matched (1:1) for age and sex with children with normal growth (normal stature group; NSG). Participants in the SSG underwent assessments before and 12 months after growth hormone treatment, while those in the NSG underwent the same assessments at baseline and 12 months. The assessments included evaluation of (A) vocal characteristics (history, vocal self-assessment, auditory-perceptual evaluation, and acoustic analysis), (B) anthropometry, (C) bone age, and (D) measurement of insulin-like growth factor-1 (IGF-1) levels. Children in the SSG had more vocal complaints (P = 0.026) than those in the NSG. The groups were similar in terms of vocal self-assessment and auditory-perceptual evaluation (P = nonsignificant). Results of acoustic analysis were also similar for fundamental frequency (F 0) and perturbation measures (P for both = nonsignificant). F 0 and speech frequency decreased significantly at 12 months in both groups. F1 values were higher at 12 months in the NSG, while F2 values were significantly higher in the baseline evaluation in boys in the SSG. Children in the SSG compared with those in the NSG presented a greater increase in height measurements at 12 months, although the anthropometric means were lower in both evaluations (P < 0.001). Vocal characteristics in children with short stature before and after treatment with growth hormone are comparable to those in children with normal growth.

Articulatory and acoustic analysis of voice acting

Voice actors are an under-utilized population for linguistic study. Looking at voice actors' novel productions of typical speech sounds can tell us more about over which muscles we have volitional control. This can help test models of speech production, inform speech therapy, and create better pedagogy for teaching vocal performance. While there have been several studies analyzing the acoustics produced by voice actors (Teshigawara, 2001; 2003; 2004; 2009; 2011; Teshigawara et al., 2007; Uchida, 2007) there are fewer studies that have investigated the articulation of voice acting (Teshigawara &amp; Murano, 2004). This study used acoustic analysis, 3D ultrasound, and electroglottography to investigate the speech produced by six professional and amateur voice actors (2 female, 4 male). Measures of average fundamental frequency (F0) and F0 range were collected from each actor speaking in their regular adult voice and a simulated child voice. 3D ultrasound was used to look at tongue placement and horizontal kymograms of the ultrasound images were also used to infer hyoid bone movement. Additionally, acoustic estimates of vocal tract length were compared to electroglottography measurements of laryngeal raising for two of the subjects. This presentation will describe the within-subject variation across each actor’s adult and simulated child voices.

Enlarging the spectrum of cluster headache: Extracranial autonomic involvement revealed by voice analysis.

BackgroundPeople with cluster headache (CH) are frequently burdened by misdiagnosis or diagnostic delay. The peculiar somatic and behavioral changes characterizing patients with CH are not useful to improve diagnostic accuracy. In our clinical experience, we noticed a typical voice quality with low and croaking tone in patients with CH.In this cross‐sectional study, we evaluated, by digital voice analysis, whether it is possible to identify typical voice quality characterizing patients with CH compared with healthy controls (HCs). Furthermore, to investigate whether putative differences in voice characteristics could be underpinned by constitutional aspects or pathological processes of vocal cords, subjects underwent a videolaryngostroboscopy. Smoking habits and alcohol consumption were specifically investigated.MethodsAfter conducting digital recording of the voices from both patients with CH and HCs in a soundproof insulated cabin in the laboratory of the Audiology Department, a set of voice parameters was analyzed. We included the measures of fundamental frequency, calculations of jitter and shimmer, and noise‐to‐harmonics ratios as well as quantities related to the spectral tilt (i.e., H1–H2, H1–A1, H1–A2, and H1–A3) in 20 patients with CH and in 13 HCs. A videolaryngostroboscopy was performed in all subjects.ResultsPatients with CH, explored during the cluster bout period, showed significantly lower second harmonic (H1–H2) values compared with HCs (−6.9 ± 7.6 vs. 2.1 ± 6.7, p = 0.002), usually characterizing the so‐called creaky voice. By using a laryngoscopy investigation, a significantly higher prevalence of mild to moderate vocal cord edema and laryngopharyngeal reflux signs were found in patients with CH (100% of patients with CH vs. 15% of HC, p < 0.001).ConclusionCreaky phonation is a “physiological mode of laryngeal operation” usually underpinned by shortened and thickened vocal folds. Creaky voice phonation can be due to a vocal fold's reduced capability to become slack or flaccid secondary to vocal cord edema underpinned by laryngopharyngeal reflux affecting the phonatory mechanisms in patients with CH. The laryngopharyngeal reflux may represent a dysautonomic sign related to the increased parasympathetic tone during in‐bout period, reinforcing the hypothesis of an extracranial autonomic dysfunction as part of CH clinical picture.

A High-Precision and Wideband Fundamental Frequency Measurement Method for Synchronous Sampling Used in the Power Analyzer

In the dedicated high-precision power quality analyzer, synchronous sampling is required to reduce the effect of spectrum leakage produced by the discrete Fourier transform process. Thus, accurate fundamental frequency measurement is urgently needed. However, due to the harmonics and noise in the power signal, it is difficult to achieve the accurate fundamental frequency measurement. Moreover, with the wide application of high-frequency programmable power supply, the fundamental frequency is gradually increasing, which requires power analyzers to have the abilities of both high precision and a wide range of the fundamental frequency measurement. To solve these issues, a new fundamental frequency measurement architecture used in synchronous sampling is proposed. This architecture consists of a small-point fast Fourier transform module, spectrum refinement algorithm, and a multimodal optimization method to calculate the accurate fundamental frequency under large harmonic conditions. In the practical hardware platform results, this architecture has a large fundamental frequency measurement range from 20 Hz to 200 kHz with a relative error which is &amp;lt;0.004%. The wideband fundamental frequency measurement structure proposed in this article achieves high measurement accuracy.

Vocal Changes of Men and Women from Different Age Decades: An Analysis from 30 Years of Age

ObjectiveTo verify the modifications in auditory-perceptual and acoustic parameters of the fundamental frequency, short-term perturbation, noise, and cepstral measures of voice in young and elderly were distributed over the age of decades. MethodsThe study was conducted on 265 subjects (140 females and 125 males), aged 30 to 79 years, without a history of vocal complaints or dysphonia, distributed in five age groups for females and males (30-39 years until 70-79 years). Three speech therapists voice specialists performed the perceptual-auditory analysis using a 100-mm visual analog scale, based on the overall dysphonia grade (overall grade), roughness, and breathiness from the sustained vowel /a/. The smoothed cepstral peak prominence (CPPS), average fundamental frequency (F0), standard deviation of the fundamental frequency (std-F0), jitter percentage (%), shimmer percentage (%), noise-to-harmonic ratio (NHR), voice turbulence index (VTI), and soft phonation index (SPI) were extracted for the acoustic analysis ResultsIn the case of the auditory-perceptual characteristics, the comparison between aged groups showed that, in men, the vocal quality did not show significant differences in the overall grade, roughness, and breathiness. However, women in the 3rd decade of life presented higher breathiness than those in the 5th, 6th, and 7th decades. Men had a higher overall grade and roughness than women. In the case of the acoustic data, the cepstral measure showed that in the 3rd decade, men presented higher CPPS than females. The noise measures, in the comparison by age groups, only VTI and SPI were different for women: VTI was higher in the 7th decade than in the 4th, whereas SPI was higher in the 4th decade than in older women. In the male population, the SPI in the 4th decade was also higher than that in the older population ConclusionThe analysis by age groups of life allowed the identification of breathiness as a sensitive parameter in the different stages of adult life in women. The CPPS analysis showed that the 7th age decade is the period of the appearance of vocal changes for females, characterized by higher CPPS. The results related to traditional short-term perturbation and noise measurements showed that changes in F0, jitter, shimmer, and NHR were not found. Among the other noise measurements, VTI and SPI demonstrated some changes in different decades of life.

Voice Emotion Recognition by Mandarin-Speaking Children with Cochlear Implants.

Emotional expressions are very important in social interactions. Children with cochlear implants can have voice emotion recognition deficits due to device limitations. Mandarin-speaking children with cochlear implants may face greater challenges than those speaking nontonal languages; the pitch information is not well preserved in cochlear implants, and such children could benefit from child-directed speech, which carries more exaggerated distinctive acoustic cues for different emotions. This study investigated voice emotion recognition, using both adult-directed and child-directed materials, in Mandarin-speaking children with cochlear implants compared with normal hearing peers. The authors hypothesized that both the children with cochlear implants and those with normal hearing would perform better with child-directed materials than with adult-directed materials. Thirty children (7.17-17 years of age) with cochlear implants and 27 children with normal hearing (6.92-17.08 years of age) were recruited in this study. Participants completed a nonverbal reasoning test, speech recognition tests, and a voice emotion recognition task. Children with cochlear implants over the age of 10 years also completed the Chinese version of the Nijmegen Cochlear Implant Questionnaire to evaluate the health-related quality of life. The voice emotion recognition task was a five-alternative, forced-choice paradigm, which contains sentences spoken with five emotions (happy, angry, sad, scared, and neutral) in a child-directed or adult-directed manner. Acoustic analyses showed substantial variations across emotions in all materials, mainly on measures of mean fundamental frequency and fundamental frequency range. Mandarin-speaking children with cochlear implants displayed a significantly poorer performance than normal hearing peers in voice emotion perception tasks, regardless of whether the performance is measured in accuracy scores, Hu value, or reaction time. Children with cochlear implants and children with normal hearing were mainly affected by the mean fundamental frequency in speech emotion recognition tasks. Chronological age had a significant effect on speech emotion recognition in children with normal hearing; however, there was no significant correlation between chronological age and accuracy scores in speech emotion recognition in children with implants. Significant effects of specific emotion and test materials (better performance with child-directed materials) in both groups of children were observed. Among the children with cochlear implants, age at implantation, percentage scores of nonverbal intelligence quotient test, and sentence recognition threshold in quiet could predict recognition performance in both accuracy scores and Hu values. Time wearing cochlear implant could predict reaction time in emotion perception tasks among children with cochlear implants. No correlation was observed between the accuracy score in voice emotion perception and the self-reported scores of health-related quality of life; however, the latter were significantly correlated with speech recognition skills among Mandarin-speaking children with cochlear implants. Mandarin-speaking children with cochlear implants could have significant deficits in voice emotion recognition tasks compared with their normally hearing peers and can benefit from the exaggerated prosody of child-directed speech. The effects of age at cochlear implantation, speech and language development, and cognition could play an important role in voice emotion perception by Mandarin-speaking children with cochlear implants.

Comparative perceptual evaluation and acoustic voice analysis of a transgender client male to female before and after laser-assisted voice adjustment surgery

In this study, we examined changes in the voice quality of a transgender client who had previously undergone male-to-female (MtF) transition. We conducted a longitudinal phonetic analysis after obtaining recordings from our client before and after undergoing laser-assisted voice adjustment (LAVA) surgery. The following acoustic parameters were compared: fundamental frequency (F0) measures, local jitter, shimmer, harmonic to noise ratio, phonation time, and long-term average spectrum. We assumed that the voice would not change significantly as a result of previous hormonal and vocal therapy, and that its timbre would be closer to female values after LAVA surgery. Since the client was on hormone therapy before the surgery, the average values of F0 corresponded to the values of a normal female voice (190.1 Hz), and, after surgery, the voice became significantly higher in phonation (235.6 Hz). Before surgery, the voice was high for a male voice during reading (mean F0 = 150.19 Hz for non-fricative text (NT) and mean F0 = 158.06 Hz for fricative text (FT)). After surgery, the voice exhibited higher F0 values (F0 = 184.72 Hz for NT and F0 = 191.87 Hz for FT). Before surgery, the voice was average high for a male voice during spontaneous speech (F0 = 119.90 Hz), while after surgery the F0 was 161.33 Hz during spontaneous speech, which is somewhat lower than the average pitch values of the female voice, but its timbral quality is more feminine. Since spontaneous speech is very important for comparison vocal timbre, we can conclude that the 42 Hz difference observed is notable. Although the minimal and maximal values of F0 based on phonation were significantly higher after surgery (p &lt; 0.001), the range was limited. The total results of the F0 measures are higher than expected, while the shortened phonation time points to the need for voice therapy. Considering all our results, we can conclude that it is important to discuss a client’s profession before considering LAVA surgery.

Voice Dosimetry in an Elementary Music Student Teacher

ABSTRACT This study pilots a new voice dosimeter device applied to a music student teacher across five consecutive school days. The aim of this study was to measure voice use during instructional periods in the music teacher classroom, and the participant wore the dosimeter during the school day in two elementary school buildings with children aged 5–11. The device was successfully deployed, and the results indicated that measures of fundamental frequency (F0) and volume (dB) and ambient sounds (dB) varied across the school day and according to student teacher activities. Significant differences were found between voice use when teaching full time for 1 day versus partial instruction and class participation. Phonation percentage time varied by day (M = 28.12%), including 27.08% on Day 1, 24.41% on Day 2, 43.49% on Day 3, 27.24% on Day 4, and 18.40% on Day 5.