Magnetic resonance images of three Japanese male subjects were obtained during sustained production of Japanese vowels /a/ and /i/ with a Shimadzu-Marconi ECLIPSE 1.5T Power Drive 250 at the ATR Brain
نویسندگان
چکیده
Articulatory variation due to the production of vowels at five pitch frequency (F0) levels (110 Hz, 123 Hz, 130 Hz, 146 Hz, and 164 Hz) was analyzed by volumetric magnetic resonance imaging (MRI). Three Japanese male subjects produced sustained Japanese vowels /a/ and /i/. Observation of vocal tract area functions extracted from the MRI data revealed that F0 shift in vowel production affects not only the length of the vocal tract but also its shape. Analysis employing coefficient of variation for lengthnormalized area functions revealed that the shape of the vocal tract does not change proportionately by F0 shift and that each subject adopt different strategies for controlling F0 while maintaining the phonetic identity of the vowel.
منابع مشابه
Changes of vocal tract shape and area function by F0 shift
Articulatory variation due to the production of vowels at five pitch frequency (F0) levels (110 Hz, 123 Hz, 130 Hz, 146 Hz, and 164 Hz) was analyzed by volumetric magnetic resonance imaging (MRI). Three Japanese male subjects produced sustained Japanese vowels /a/ and /i/. Observation of vocal tract area functions extracted from the MRI data revealed that F0 shift in vowel production affects no...
متن کاملGenetic Polymorphism in Prolactin Gene and its Association with Reproductive Traits in Japanese Quail (Coturnix japonica)
The present study was carried out to investigate the polymorphism of intron 3 to exon 3 of prolactin gene containing 24 bpindel at nucleotide position (np) 358 and its association with some reproductive traits in Japanese quail. These traits consisted of weight (WSM) and age at sexual maturity (ASM), mean egg weight at 2nd, 4th, 6th, and 2-6th weeks (MEW), and the number of eggs during the 2...
متن کاملEffects of Spirulina platensis on Growth Performance, Carcass Characteristics, Egg Traits and Immunity Response of Japanese Quails
In present study, two trials had been conducted to evaluate the effects of Spirulina platensis (SP) on growth performance, carcass characteristics, egg quantity and quality traits, and immunity response of Japanese quails. In trial 1, a total number of 180 one-day-old Japanese quails were randomly assigned into 6 groups, 3 replicates with 10 quail chicks per replicate. Experimental die...
متن کاملThe Effect of Dietary Energy and Protein Levels on Growth Performance and Antibody Responses of Offspring of Laying Japanese Quails
An experiment was conducted to study the effect of metabolizable energy (ME) and protein of Japanese quails diets on offspring performance and antibody production against sheep red blood cell (SRBC). A total of 432 Japanese quails (13 week-old) were divided into nine treatments. Each treatment comprised four replicates of twelve birds (9 female and 3 male). Nine diets including three levels of ...
متن کاملSpeaker individualities of vocal tract shapes of Japanese vowels measured by magnetic resonance images
Three dimensional vocal tract shapes of three males and three females were measured from the magnetic resonance images that were taken during sustained phonation of the five Japanese vowels. Dimensional differences in the vocal tract length of the subjects were quantitatively measured by dividing the entire vocal tract into the oral, the pharyngeal and the laryngeal sections. To investigate mai...
متن کامل