Research on multiple frequency tympanometry on ear system based on ARM
- VernacularTitle:一种基于ARM系统的多频耳声导抗测试系统的研究
- Author:
Liwei WANG
;
Yuejie LI
- Publication Type:Journal Article
- Keywords:
tympanometry;
multi-frequency;
probe tone;
middle ear
- From:
Chinese Medical Equipment Journal
1989;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study a multiple frequency tympanometry on ear system. Methods Based on the original low frequency and single ingredient SY-IA tympanometry, the study mainly focused on such aspects as multiple frequency probe tone circuit, constant pressure sound control system, micropressor control system and multiple frequency acoustic immitance & phase angle detection circuit. Results Multiple frequency tympanometry on ear system could detect multiple frequency acoustic immitance and phase angle for normal ear, tympanum loosed ear and ossicular chain break ear under different probe tone. Conclusion Experiments show that multiple frequency tympanometry on ear system based on ARM is helpful to the diagnosis of pathological changes which are insensitive to single low frequency tympanometry.
