Speaking Fundamental Frequency and Chronologic Age in Males

1972 ◽  
Vol 15 (1) ◽  
pp. 155-159 ◽  
Author(s):  
Harry Hollien ◽  
Thomas Shipp
Keyword(s):  
Fundamental Frequency ◽  
Mean Frequency ◽  
The Mean ◽  
Speaking Fundamental Frequency

Data are presented on the mean speaking fundamental frequency (SFF) of 175 male talkers, ranging in age from 20 to 89 years. Mean frequency levels by age decade show a progressive lowering of SFF from age 20 to 40 with a rise in level from age 60 through the 80’s.

Speaking Fundamental Frequency Characteristics of Five- and Six-Year-Old Children with Mongolism

1970 ◽  
Vol 13 (2) ◽  
pp. 418-425 ◽  
Author(s):  
Bernd Weinberg ◽  
Marsha Zlatin
Keyword(s):  
Fundamental Frequency ◽  
Trisomy 21 ◽  
Clinical Observation ◽  
Control Sample ◽  
Frequency Standard ◽  
Normal Children ◽  
The Subject ◽  
The Mean ◽  
Voice Fundamental Frequency ◽  
Speaking Fundamental Frequency

Spontaneous speech samples of 27 children with trisomy-21 type Down’s syndrome and 66 normal children were tape-recorded and analyzed for mean fundamental frequency, standard deviation, and range. Results indicate that the mean speaking fundamental frequency (SFF) level for the sample of children with mongolism was significantly higher than the mean SFF level for the control sample. Approximately 50% of the children with mongolism had mean SFF levels exceeding the highest mean SFF level of their matched controls. In only two cases did the mean SFF for a child with mongolism fall below the mean SFF level for control children of the same age and sex. No child with mongolism exhibited a mean SFF level below the lowest mean SFF for any control subject. The subject in question is the clinical observation that children with mongolism typically have low voice fundamental frequency levels.

Spontaneous Speaking Fundamental Frequency of 6-Year-Old Black Children

1988 ◽  
Vol 31 (4) ◽  
pp. 723-725 ◽  
Author(s):  
Marica C. Wheat ◽  
Amelia I. Hudson
Keyword(s):  
Fundamental Frequency ◽  
Spontaneous Speech ◽  
Black Children ◽  
Frequency Characteristics ◽  
Frequency Range ◽  
White Children ◽  
Mean Frequency ◽  
Physical Variables ◽  
Speaking Fundamental Frequency

The fundamental vocal frequency characteristics were measured from 50 male and 50 female Black 6-year-old children during prompted spontaneous speech. Boys had a mean fundamental frequency of 219.50 Hz, with a mean range of 134.80–298.70 Hz. Girls had a mean fundamental frequency (F 0 ) of 211.30 Hz and a mean frequency range of 137.60–297.50 Hz. No significant differences in mean or range values were found as a function of speaker sex. Nonsignificant relationships were found between physical variables of speaker height and weight and these F 0 measures for either sex and for the speaker group combined. The results of the present study were compared to previous research concerning the speaking fundamental vocal frequency of White children.

Aerodynamic and Acoustic Voice Measures Before and After an Acute Public Speaking Stressor

2020 ◽  
Vol 63 (10) ◽  
pp. 3311-3325
Author(s):  
Brittany L. Perrine ◽  
Ronald C. Scherer
Keyword(s):  
Fundamental Frequency ◽  
Salivary Cortisol ◽  
Public Speaking ◽  
Stress System ◽  
Before And After ◽  
Subglottal Pressure ◽  
Response To Stress ◽  
System Activation ◽  
Speaking Fundamental Frequency ◽  
Pituitary Adrenal Axis

Purpose The goal of this study was to determine if differences in stress system activation lead to changes in speaking fundamental frequency, average oral airflow, and estimated subglottal pressure before and after an acute, psychosocial stressor. Method Eighteen vocally healthy adult females experienced the Trier Social Stress Test (TSST) to activate the hypothalamic–pituitary–adrenal axis. The TSST includes public speaking and performing mental arithmetic in front of an audience. At seven time points, three before the stressor and four after the stressor, the participants produced /pa/ repetitions, read the Rainbow Passage, and provided a saliva sample. Measures included (a) salivary cortisol level, (b) oral airflow, (c) estimated subglottal pressure, and (d) speaking fundamental frequency from the second sentence of the Rainbow Passage. Results Ten of the 18 participants experienced a hypothalamic–pituitary–adrenal axis response to stress as indicated by a 2.5-nmol/L increase in salivary cortisol from before the TSST to after the TSST. Those who experienced a response to stress had a significantly higher speaking fundamental frequency before and immediately after the stressor than later after the stressor. No other variable varied significantly due to the stressor. Conclusions This study suggests that the idiosyncratic and inconsistent voice changes reported in the literature may be explained by differences in stress system activation. In addition, laryngeal aerodynamic measures appear resilient to changes due to acute stress. Further work is needed to examine the influence of other stress systems and if these findings hold for dysphonic individuals.

35Cl NQR Spectroscopy on Salts and Molecular Compounds of Trichloroacetic Acid

1986 ◽  
Vol 41 (1-2) ◽  
pp. 215-224 ◽  
Author(s):  
Winfried Fichtner ◽  
Axel Markworth ◽  
Norbert Weiden ◽  
Alarich Weiss
Keyword(s):  
Frequency Shift ◽  
Temperature Dependence ◽  
Linear Relation ◽  
Trichloroacetic Acid ◽  
Mean Frequency ◽  
35Cl Nqr ◽  
The Mean ◽  
Molecular Compounds

The temperature dependence of salts M(1)H(Cl3CCOO)2 and molecular compounds of trichloroacetic acid with amines and benzaldehydes, TCA · X, was studied,The data fit rather well to the known dependence of the mean frequency shift Δ <v(35Cl)> on the pkadifference of X with respect to TCA. A linear relation is observed between the bleaching out temperature Tb of the 35Cl NQR lines and Δ <v(35Cl)> for M(1)H(Cl3CCOO)2 and for TCA · X, X = benzaldehydes.

scholarly journals Improving peripherally inserted central catheter appropriateness and reducing device-related complications: a quasiexperimental study in 52 Michigan hospitals

2021 ◽  
pp. bmjqs-2021-013015
Author(s):  
Vineet Chopra ◽  
Megan O'Malley ◽  
Jennifer Horowitz ◽  
Qisu Zhang ◽  
Elizabeth McLaughlin ◽  
...  
Keyword(s):  
Central Line ◽  
Hospital Performance ◽  
Policy Implications ◽  
Change Point Analysis ◽  
Absolute Difference ◽  
Peripherally Inserted Central Catheter ◽  
Central Catheter ◽  
Appropriateness Criteria ◽  
Mean Frequency ◽  
The Mean

BackgroundThe Michigan Appropriateness Guide for Intravenous Catheters (MAGIC) provides evidence-based criteria for peripherally inserted central catheter (PICC) use. Whether implementing MAGIC improves PICC appropriateness and reduces complications is unknown.MethodsA quasiexperimental study design to implement MAGIC in 52 Michigan hospitals was used. Data were collected from medical records by trained abstractors. Hospital performance on three appropriateness criteria was measured: short-term PICC use (≤5 days), use of multilumen PICCs and PICC placement in patients with chronic kidney disease. PICC appropriateness and device complications preintervention (January 2013 to December 2016) versus postintervention (January 2017 to January 2020) were compared. Change-point analysis was used to evaluate the effect of the intervention on device appropriateness. Logistic regression and Poisson models were fit to assess the association between appropriateness and complications (composite of catheter occlusion, venous thromboembolism (VTE) and central line-associated bloodstream infection (CLABSI)).ResultsAmong 38 592 PICCs, median catheter dwell ranged from 8 to 56 days. During the preintervention period, the mean frequency of appropriate PICC use was 31.9% and the mean frequency of complications was 14.7%. Following the intervention, PICC appropriateness increased to 49.0% (absolute difference 17.1%, p<0.001) while complications decreased to 10.7% (absolute difference 4.0%, p=0.001). Compared with patients with inappropriate PICC placement, appropriate PICC use was associated with a significantly lower odds of complications (OR 0.29, 95% CI 0.25 to 0.34), including decreases in occlusion (OR 0.25, 95% CI 0.21 to 0.29), CLABSI (OR 0.61, 95% CI 0.46 to 0.81) and VTE (OR 0.40, 95% CI 0.33 to 0.47, all p<0.01). Patients with appropriate PICC placement had lower rate of complications than those with inappropriate PICC use (incidence rate ratio 0.987, 95% CI 0.98 to 0.99, p<0.001).ConclusionsImplementation of MAGIC in Michigan hospitals was associated with improved PICC appropriateness and fewer complications. These findings have important quality, safety and policy implications for hospitals, patients and payors.

The Development of Fundamental Frequency in 6- to 10-Year Old Children: A Brief Study

1998 ◽  
Vol 28 (1-2) ◽  
pp. 55-62 ◽  
Author(s):  
S. P. Whiteside ◽  
C. Hodgson
Keyword(s):  
Standard Deviation ◽  
Fundamental Frequency ◽  
Picture Naming ◽  
Age Groups ◽  
Naming Task ◽  
Final Position ◽  
The Mean ◽  
Age And Sex

This brief study investigates the development of fundamental frequency (FO) in pre-adolescent children as a function of age and sex. The children who took part in the study were divided into three age groups: 6, 8 and 10 years. Each group consisted of three males and three females. Each subject produced nine target phrases with [] in phrase-final position, which were elicited via a picture-naming task. FO was estimated for the nine target utterances and the following FO parameters were derived: mean FO for the whole phrase; FO range for the whole phrase; standard deviation values of FO for the whole phrase and mean FO for the phrase-final vowel [α:]. Results indicated that FO parameters generally decreased with age, and by age 10 years the males had lower values than the females for all four parameters. Results also indicated that the mean standard deviation of FO across the phrase was significantly higher for the females compared to that for the males.

scholarly journals Assessing the SNR Influence in the Estimation of the Mean Frequency of Lower Limbs sEMG Signals

2018 ◽  
Vol 16 (8) ◽  
pp. 2108-2114 ◽  
Author(s):  
Andres Rojas ◽  
Angel Farfan ◽  
Esteban Mora ◽  
Luis I. Minchala ◽  
Sara Wong
Keyword(s):  
Lower Limbs ◽  
Mean Frequency ◽  
The Mean ◽  
Semg Signals

Clinical Utility of CAPE-V Sentences for Determination of Speaking Fundamental Frequency

2015 ◽  
Vol 29 (4) ◽  
pp. 441-445 ◽  
Author(s):  
Mary J. Sandage ◽  
Laura W. Plexico ◽  
Amy Schiwitz
Keyword(s):  
Fundamental Frequency ◽  
Clinical Utility ◽  
Speaking Fundamental Frequency
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