Vocal Acoustics on Patients with Abnormal Lung Function
- VernacularTitle:肺功能异常患者发声功能的声学研究
- Author:
Xi CHEN
;
Jiejie XU
- Publication Type:Journal Article
- Keywords:
Lung function;
Respiration;
Phonation;
Voice acoustics analysis
- From:
Journal of Audiology and Speech Pathology
1998;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the acoustic f eatures of voice in patients with abnormal lung function, evaluate the effect o f lung dysfunction on acoustics of voice,and observe the relationship between re spiration and phonation. Methods The voice signals of sustained vowel /a/ were mea sured by a micro-computer with Dr.speech science for windows software in 50 pati ents with abnormal lung function and 50 healthy adults. The acoustic parameters( F0,jitter,shimmer,intensity,NNE) were collected and analysed in lowest pitch,no rmal pitch and highest pitch.All patients were divided into two groups according to sex. Results In patients with abnormal lung function ,the pa rameters (shimmer, jitter, NNE,)were significantly increased or others(F0,inten sity) were significantly decreased in lowest pitch. Intensity decreased si gnificantly in highest pitch . There was a positive relationship between the de grees of lung dysfunction and the parameters of acoustics. Conclusion Abnormal lung function affected significantly on acoustics of voice in three different pitches; The changes of the parameters were related to the degrees of lung function.The results showed that respiratory activities play an important role in phonation.
