ABSTRACT
This study is aimed at examining a pitch contour of Indonesian prosody in children with Autism Spectrum Disorder (ASD). The sample data are taken from utterances of ASD children sitting on the third, fourth, fifth, and sixth grade of an Indonesian elementary school. The PRAAT program was used to analyse acoustic data in the pitch contour. The stimuli used are declaratives and interrogatives modes contrasted to get information of the pitch contour differences between the two modes of sentences. The results of the research revealed that there are no significant differences between the two modes in the F0 mean, pitch movement, and pitch range. The ASD children show a low F0, flat pitch movement and a narrow pitch range; therefore, they are significantly different from the control speakers. The boundary tone and pitch variation are not found in the pitch contour of ASD speakers. In most cases, the results show that the pitch contour of ASD is flat, while the TD speakers could produce the pitch contour of statements and questions differently.
