An Introduction to Speech Sciences (Acoustic Analysis of Speech)

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 languagetherapy' has been widely accepted throughout the world. the main focus of these applications is the the rapeutic 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 speechanalysis for both normal and abnormalspeeches is given. in addition, examplesof the acoustical characteristics.