Some Aspects of Fundamental Frequency Control by Esophageal Speakers

1981 ◽  
Vol 24 (1) ◽  
pp. 85-91 ◽  
Author(s):  
Cynthia B. Angermeier ◽  
Bernd Weinberg

The broad objective of the present project was to assess the degree to which esophageal speakers are able to control voice fundamental frequency. Three male esophageal speakers and four age-matched normal speakers were used in a vocal pitch matching task to elicit f 0 levels. Average differences in fundamental frequency between the individual targets and productions were comparable for esophageal and normal talkers, The frequency variation associated with pitch matching by esophageal speakers was 1.5 to 8 times greater than that by normal talkers, The results were interpreted to support (1) the hypothesis that esophageal speakers were less proficient in controlling the steady-state attributes of their voicing source and vocal output; and (2) the view that esophageal speakers exhibit reduced intentional control over voice fundamental frequency.

1980 ◽  
Vol 23 (2) ◽  
pp. 274-283 ◽  
Author(s):  
David Sorensen ◽  
Yoshiyuki Horii ◽  
Rebecca Leonard

Fundamental frequency perturbation (jitter) during sustained vowel phonations of speakers under topical anesthesia of the larynx was investigated for five adult males. The results showed that the average jitter was significantly greater under the anesthesia than normal conditions, and that the jitter difference between the two conditions was more prominent at high frequency phonations. Implications of these data for tactile and proprioceptive feedback in phonatory frequency control are discussed.


1990 ◽  
Vol 55 (3) ◽  
pp. 476-484 ◽  
Author(s):  
Anthea I. Britto ◽  
Philip C. Doyle

The purpose of this study was to compare habitual (modal) and derived optimal pitch (fundamental frequency) values in 40 young adults. The individual habitual F 0 values of 20 male and 20 female nonsmokers with normal larynges, normal voices, and no history of laryngeal pathology or formal vocal training were obtained from high-quality recordings of spontaneous monologue, oral reading, and sustained phonation. Optimal fundamental frequency (F 0 ) was derived from each individual's phonational range using the 25% Method (Fairbanks, 1960; Pronovost, 1942). Using correlative analyses, the predicted optimal F 0 values that were derived were compared to habitual F 0 values for the male and female speaker groups, and for specific vocal tasks used to identify habitual F 0 (i.e., spontaneous monologue vs. oral reading vs. sustained phonation). Results indicate that habitual F 0 was not consistent with derived optimal F 0 values using the 25% Method; rather, habitual F 0 in our normal adults occurred between 8% and 10% up the phonational range from basal F 0 . Clinical implications of these data and the related limitations associated with the concept of optimal pitch (F 0 ) are discussed.


2010 ◽  
Vol 24 (12n13) ◽  
pp. 1950-1988 ◽  
Author(s):  
Azriel Z. Genack ◽  
Jing Wang

We review the statistics of speckle in the Anderson localization transition for classical waves. Probability distributions of local and integrated transmission and of the evolution of the structure of the speckle pattern are related to their corresponding correlation functions. Steady state and pulse transport can be described in terms of modes whose speckle patterns are obtained by decomposing the frequency variation of the transmitted field. At the same time, transmission can be purposefully manipulated by adjusting the incident field and the eigenchannels of the transmission matrix can be found by analyzing sets of speckle patterns for different inputs. The many aspects of steady state propagation are reflected in diverse, but simply related, parameters so that a single localization parameter encapsulates the character of transport on both sides of the divide separating localized from diffusive waves.


2016 ◽  
Vol 19 (4) ◽  
pp. 211-217 ◽  
Author(s):  
Kathleen Wermke ◽  
Johanna Teiser ◽  
Eunice Yovsi ◽  
Paul Joscha Kohlenberg ◽  
Peter Wermke ◽  
...  

1979 ◽  
Vol 65 (S1) ◽  
pp. S137-S137
Author(s):  
M. Rothenberg ◽  
R. D. Molitor

2017 ◽  
Vol 23 (2) ◽  
pp. 674-698 ◽  
Author(s):  
Luciano Fanti ◽  
Luca Gori ◽  
Cristiana Mammana ◽  
Elisabetta Michetti

This article aims at studying a general equilibrium model with overlapping generations that incorporates inherited tastes (aspirations) and endogenous longevity. The existence of standard-of-living aspirations transmitted between two subsequent generations in a context where the individual state of health depends on public investments in health has some remarkable consequences at the macroeconomic level. First, aspirations allow escaping from the well-known poverty trap scenario described by Chakraborty (2004). Second, the steady-state equilibrium may be destabilized through a super-critical Neimark–Sacker bifurcation when the health tax rate is set at too high or too low a level. This causes endogenous fluctuations in income and longevity.


Author(s):  
Eisuke Higuchi ◽  
Hiroshi Yabuno ◽  
Yasuyuki Yamamoto ◽  
Sohei Matsumoto

Abstract In recent years, measurement methods that use resonators as microcantilevers have attracted attention because of their high sensitivity, high accuracy, and rapid response time. They have been widely utilized in mass sensing, stiffness sensing, and atomic force microscopy (AFM), among other applications. In all these methods, it is essential to accurately detect shifts in the natural frequency of the resonator caused by an external force from a measured object or sample. Experimental approaches based on self-excited oscillation enable the detection of these shifts even when the resonator is immersed in a high-viscosity environment. In the present study, we experimentally and theoretically investigate the nonlinear characteristics of a microcantilever resonator and their control by nonlinear feedback. We show that the steady-state response amplitude and the corresponding response frequency can be controlled by cubic nonlinear velocity feedback and cubic nonlinear displacement feedback, respectively. Furthermore, the amplitude and frequency of the steady-state self-excited oscillation can be controlled separately. These results will expand application of measurement methods that use self-excited resonators.


1971 ◽  
Vol 14 (3) ◽  
pp. 652-658 ◽  
Author(s):  
Bernd Weinberg ◽  
Jan Westerhouse

An intensive study of a normal-speaking subject, proficient in the use of buccal speech, was conducted. With respect to voice fundamental frequency variability, phonation time, and speaking rate his buccal speech characteristics compared favorably with those reported for excellent esophageal speakers. However, the reduced intelligibility of his buccal speech on rhyme-test words, the high average fundamental frequency of his buccal voice, and his conspicuous buccal gestures during speech represent distinct vocal liabilities.


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