Acoustic Properties Of National And International Broadcasting Speech: A Contrastive Study

The principles that determine the processes of speech production and perception are difficult to express without referring to the use of physical concepts of wave motion, periodicity, frequency, and amplitude. These concepts can be described as the basic physical properties of speech sounds. People communicate with each other by transmitting intelligible messages. No one would like to listen to a voice that is not understood. When we listen to anational and international broadcast speech,we can sense a variation in speech production among announcers; the reason turns back to the acoustic variations in speech. The present study analyzes the acoustic properties of Arabic national and international broadcasting speech in audio media. The utterances are produced by announcer who produce newscastin four main radio stations, two of them are national radio stations in Iraq, namely ( Iraqi Media Network, which includes( The Republic of Iraq radio and Al-Iraqiya Radio ), and Al-Mirbad radio, the other set comprises international radio stations, namely ( BBC Arabic and Monte Carlo Doualiya – MCD). The study hypothesizes that national broadcasters' acoustic properties are different from those in international broadcasting speech.The variations in the acoustic properties among broadcasters due to gender variation.  Once the data are segmented, they are processed using the PRAAT acoustic analysis program (Boersma&Weenink, 2020). In this way, the researcher can measure the variations in the four acoustic parameters: fundamental frequency, amplitude, intensity, and duration of time of broadcasters’ utterances.Among the main findings of this study , the three corresponding utterances are uttered by the national male/female newscasters  with divers fundamental frequency , amplitude , intensity and duration  , in contrast with the other   international male/female newscasters.