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An Introduction to Speech Sciences (Acoustic Analysis of Speech)

نویسنده:

(10 صفحه - از 5 تا 14)

Speech sciences deal with the acoustical characteristics of speech by means of sophisticated soft wares as well as hard wares. Although, a speech science is a well known science in the developed countries, especially the western societies, however, it has been remained almost unknown in Iran, though, in recent years a group of scholars have been involved in this branch of science. The application of the speech sciences in the field of 'Speech and Language Therapy' has been widely accepted throughout the world. The main focus of these applications is the therapeutic aspects of the program, which is used for both adults and children. However, the non-therapeutic applications are mainly used for research purposes only. In this article, a brief introduction about the nature as well as the application of speech analysis for both normal and abnormal speeches is given. In addition, examples of the acoustical characteristics fconsonants and vowels such as, voice onset time (VOT), formant frequencies and spectrograms will be presented.Speech sciences deal with the acoustical characteristics of speechby means of sophisticated soft wares as well as hard wares. Although, a speech science is a well known science in the developed countries, especially the west- ern societies, however, it has been remained almost unknown in Iran, though, in recent years a group of scholars have been involved in this branch of science. The application of the speech sciences in the field of 'Speech and Language Therapy' has been widely accepted throughout the world. The main focus of these applications is the therapeutic aspects of the program, which is used for both adults and children. However, thenon-therapeutic applications are mainly used for research purposes only.In this article, a brief introduction about the nature as well as the application of speech analysis for both normal and abnormal speeches is given. In addition, examplesof the acoustical characteristicsfconsonants and vowels such as, voice onset time (VOT), formant frequencies and spectrograms will be presented.

خلاصه ماشینی:

"In addition, examplesof the acoustical characteristicsfconsonants and vowels such as, voice onset time (VOT), formant frequencies and spectrograms will be presented. Key words: Acoustic analysis, VOT, Spectrogram, Formant frequency, Disordered speech Introduction Speech science is the study of all the fac- tors involved in producing, transmitting, perceiving and comprehending speech, including all relevant aspects of anatomy, physiology, neurology and acoustics, as well as phonetics. The study of speech production from an acoustical point of view provides the means for looking at a very complex process in a simpler way. Speech science is the study of all the factors involved in producing, transmitting, perceiving and comprehending speech, including all relevant aspects of anatomy, physiology, neurology and acoustics, as well as pho- netics. The movement of the vocal organs gen- erate a speech sound wave that travels the air between speaker and listener. These include: Howell and Vause (1986), in an attempt to investigate the acoustic properties of stut- tered speech, analysed the spectral prop- erties of 8 English vowels in adult stutter- ers in comparison with the subsequent fluent vowels. Fluent Vowels and voiceless plosives The acoustic properties and formant fre- quencies of stutterers for fluently and dysfluently produced vowels, as well as the duration and amplitude of vowels were examined. Other acoustic data showed that the brief vow- els in repetitions had formant locations at the same frequencies as in the fluent speech of the same speaker. Acoustic Analysis and Perception of Vowels in Stuttered Speech."


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