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- W2350561364 abstract "AIM To study the spectrum features of formant pattern of vowel and the relationship between RVPI and F3 in postoperative patients. METHODS A spectrum analyzing program was coded using the acoustic functions Matlab language provided. 25 postoperative CP patients were grouped by speech articulation, and 15 normal children were selected as control. Formant pattern of vowel was obtained and frequencies of F1, F2 and F3 measured. Then 20 selected patients were divided into two groups by RVPI degrees: group A consisted of 7 patients whose RVPI 10%; those RVPI above 10% formed group B. Frequency of F3 were compared between group A and group B. RESULTS Frequency of F1 had no difference between IAr, NAr and control groups. There was significant difference about F2 among those children ( P 0.05). F2 frequency was highest in normal control group and lowest in IAr group. No difference about F3 frequency was found between control group and NAr group ( P 0.05), but F3 of IAr group was lower than that of the above two groups ( P 0.05). Furthermore, one extra formant about 1000 Hz existed in most CP patients. F3 frequency of group A was significantly higher than that of group B ( P 0.05). CONCLUSION There is significant relationship between articulation and F2. The extra formant on 1000 Hz is a characteristic of CP patients' spectrums. F3 frequency of can be used as an index to assess VPF." @default.
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- W2350561364 date "2001-01-01" @default.
- W2350561364 modified "2023-09-27" @default.
- W2350561364 title "Study on spectrum features of postoperative CP patients" @default.
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