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At least 163 records · Page 9Linked to original sources
PubMed2005

The speaker's formant.

The current study concerns speaking voice quality in two groups of professional voice users, teachers (n = 35) and actors (n = 36), representing trained and untrained voices. The voice quality of text reading at two intensity levels was acoustically analyzed. The central concept was the speaker's formant (SPF), related to the perceptual characteristics "better normal voice quality" (BNQ) and "worse normal voice quality" (WNQ). The purpose of the current study was to get closer to the origin of the phenomenon of the SPF, and to discover the differences in spectral and formant characteristics between the two professional groups and the two voice quality groups. The acoustic analyses were long-term average spectrum (LTAS) and spectrographical measurements of formant frequencies. At very high intensities, the spectral slope was rather quandrangular without a clear SPF peak. The trained voices had a higher energy level in the SPF region compared with the untrained, significantly so in loud phonation. The SPF seemed to be related to both sufficiently strong overtones and a glottal setting, allowing for a lowering of F4 and a closeness of F3 and F4. However, the existence of SPF also in LTAS of the WNQ voices implies that more research is warranted concerning the formation of SPF, and concerning the acoustic correlates of the BNQ voices.

Adult↗
PubMed2006

Voice onset time for female trained and untrained singers during speech and singing.

UNLABELLED: The purpose of this study was to examine the voice onset times of female trained and untrained singers during spoken and sung tasks. Thirty females were digitally recorded speaking and singing short phrases containing the English stop consonants /p/ and /b/ in the word-initial position. Voice onset time was measured for each phoneme and statistically analyzed. Mixed-ANOVAs revealed significantly longer voice onset time durations during speech for /p/ as compared to sung productions. No significant differences between the trained singers and untrained singers were observed. In addition, no task differences occurred for the /b/ productions. The results indicated that the type of phonatory task influences VOT for voiceless stops in females. LEARNING OUTCOMES: As a result of this activity, the reader will be able to (1) understand articulatory and phonatory differences between spoken and sung productions; (2) understand the articulatory and phonatory timing differences between trained singers and untrained singers during spoken and sung productions.

Adult↗
PubMed1963

VOCAL NODULES.

Explore the source record for details and available documents.

Hoarseness↗
PubMed2006

Clinical characteristics and voice analysis of patients with mutational dysphonia: clinical significance of diplophonia and closed quotients.

The aim of this study was to investigate the acoustic and electroglottographic characteristics of patients with mutational dysphonia before and after voice therapy. The clinical records of 15 patients with mutational dysphonia were reviewed, and their voice recordings were analyzed with the help of the Lx Speech Studio program (Laryngograph Ltd, London, UK). After voice therapy combined with the manual compression method, the subjects' voices lowered in pitch and improved in quality. In addition, we classified the mutational dysphonia into four categories according to the presence of diplophonia and closed quotients. The most common type among the categories was characterized by a bimodal distribution of fundamental frequency (diplophonia), accompanied by a low closed quotient (falsetto voice) at high frequencies. However, the results also showed that mutational dysphonia cannot be generalized as always having a falsetto voice, as shown in other types. The effect of therapy was different for each type, and those cases with both diplophonia and a non-trained falsetto voice could be treated more readily. Consequently, the diplophonia and closed quotient, which were easily analyzed using Lx Speech Studio program, are important factors in the classification of mutational dysphonia. Identification of these characteristics may affect treatment choices, facilitate monitoring of the efficacy of therapy, and aid in estimating prognosis.

Adolescent↗
PubMed2006

Effects of vocal training and phonatory task on voice onset time.

OBJECTIVES/HYPOTHESIS: The purpose of this study was to examine the temporal-acoustic differences between trained singers and nonsingers during speech and singing tasks. METHODS: Thirty male participants were separated into two groups of 15 according to level of vocal training (ie, trained or untrained). The participants spoke and sang carrier phrases containing English voiced and voiceless bilabial stops, and voice onset time (VOT) was measured for the stop consonant productions. RESULTS: Mixed analyses of variance revealed a significant main effect between speech and singing for /p/ and /b/, with VOT durations longer during speech than singing for /p/, and the opposite true for /b/. Furthermore, a significant phonatory task by vocal training interaction was observed for /p/ productions. CONCLUSIONS: The results indicated that the type of phonatory task influences VOT and that these influences are most obvious in trained singers secondary to the articulatory and phonatory adjustments learned during vocal training.

Adult↗