Articles about Vocal Production

The Flow and Pressure Relationships in Different Tubes Commonly Used for Semi-occluded Vocal Tract Exercises
Journal of Voice (2016) Vol. 30, No. 1, pp. 36-41

This experimental study investigated the back pressure (Pback) versus flow (U) relationship for 10 different tubes commonly used for semi-occluded vocal tract exercises, that is, eight straws of different lengths and diameters, a resonance tube, and a silicone tube similar ...

Describing Speech Usage in Daily Activities in Typical Adults
Journal of Voice (2016) Vol. 30, No. 1, pp. 42-52

"Speech usage" refers to what people want or need to do with their speech to meet communication demands in life roles. The purpose of this study was to contribute to validation of the Levels of Speech Usage scale by providing ...

Formant Frequencies and Bandwidths in Relation to Clinical Variables in an Obstructive Sleep Apnea Population
Journal of Voice (2016) Vol. 30, No. 1, pp. 21-29

We investigated whether differences in formants and their bandwidths, previously reported comparing small sample population of healthy individuals and patients with obstructive sleep apnea (OSA), are detected on a larger population representative of a clinical practice scenario. We examine possible ...

Respiratory Muscle Strength, Sound Pressure Level, and Vocal Acoustic Parameters and Waist Circumference of Children With Different Nutritional Status
Journal of Voice (2016) Vol. 30, No. 1, pp. 30-35

Objective: Relate respiratory muscle strength (RMS), sound pressure (SP) level, and vocal acoustic parameters to the abdominal circumference (AC) and nutritional status of children. Eighty-two school children aged between 8 and 10 years, grouped by nutritional states (eutrophic, overweight, or ...

Effect of Voice Onset Type on Vocal Attack Time
Journal of Voice (2016) Vol. 30, No. 1, pp. 11-14

Vocal attack time (VAT) is the time lag between the growth of sound pressure (SP) and electroglottographic (EGG) signals at vocal initiation. The characteristics of voice initiation are associated with issues of vocal hygiene, efficiency, and quality. Vocal onsets have ...

Relationship Between Subglottal Pressure and Sound Pressure Level in Untrained Voices
Journal of Voice (2016) Vol. 30, No. 1, pp. 15-20

Subglottal pressure (Ps) is strongly correlated with sound pressure level (SPL) and is easy to measure by means of commonly available equipment. The SPL/Ps ratio is strongly dependent on the efficiency of the phonatory apparatus and should be of great ...

Objective and Subjective Aspects of Voice in Pregnancy
Journal of Voice (2016) Vol. 30, No. 1, pp. 70-73

This study aimed to evaluate vocal changes in pregnancy according to trimesters both objectively and subjectively. Fifty pregnant women and 15 nonpregnant women were included in the study. Eighteen of the 50 pregnant women were in the first trimester, 17 ...

Vocal Effects in Military Students Submitted to an Intense Recruit Training: A Pilot Study
Journal of Voice (2016) Vol. 30, No. 1, pp. 61-69

This study aims at evaluating the vocal parameters of military officers before and after an Intense Recruit Training (IRT), consisting of a 48-hour exercise protocol involving high vocal demand combined with physical effort, lower body hydration levels, and fewer hours ...