Acoustic Analysis of Speech Prosody in Patients after Stroke
10.3969/j.issn.1006-7299.2024.06.006
- VernacularTitle:脑卒中患者言语韵律的声学特征分析
- Author:
Yiwen ZHANG
1
,
2
,
3
;
Qin WAN
;
Yuan DAI
;
Ying CHEN
;
Yun LI
Author Information
1. 上海交通大学医学院附属第九人民医院耳鼻咽喉头颈外科(上海 200011)
2. 上海交通大学医学院耳科学研究所
3. 上海市耳鼻疾病转化医学重点实验室
- Keywords:
Stroke;
Speech prosody;
Acoustic characteristics
- From:
Journal of Audiology and Speech Pathology
2024;32(6):507-511
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the acoustic characteristics of speech prosody in patients after stroke and to select sensitive acoustic parameters of speech prosody.Methods A total of 30 patients after stroke(stroke group)and 30 healthy adults of similar age(control group)were collected.Both groups read short texts aloud,and each syllable and pause of all short sentences in the whole text were recorded under the spectrogram.Acoustic analysis was performed on the inter-rogative sentence"What do you want to buy for your grandson's birthday?"and the stressed sentence"I want to buy toys!"The rhythm(unnatural pause number,speech rate,articulation rate),intonation(whole sentence fundamental frequency,fundamental frequency standard deviation and fundamental frequency slope of interrogative sentences,boundary tone funda-mental frequency and fundamental frequency slope of interrogative sentences,fundamental frequency and fundamental fre-quency slope of four tones),and stress(average intensity of stressed syllables,peak intensity,and stressed syllables dura-tion)of speech prosody were analyzed and compared between the two groups.Results The unnatural pause number and the stressed syllables duration in the stroke group were significantly higher than those in the normal control group(P＜0.01).The speech rate,articulation rate,whole sentence fundamental frequency standard deviation,whole sentence funda-mental frequency slope,and fourth tone fundamental frequency slope in the stroke group were significantly lower than those in the normal control group(P＜0.01).The boundary tone fundamental frequency slope of interrogative sentences and the third tone fundamental frequency slope were significantly lower than those in the normal control group(P＜0.05).Conclu-sion Patients after stroke have poor rhythm control,manifested as excessive pauses and slow speech rate;insufficient into-nation expression,manifested as insufficient interrogative sentence tone,and poor control ability of the third and fourth tones;compensatory expression of stress,characterized by prolonging the expression time of stressed syllables.
