Study on the calibration algorithm for acoustic immittance
10.3760/cma.j.issn.1673-4181.2013.06.005
- VernacularTitle:耳声导抗检测校准算法的研究
- Author:
Liwei WANG
;
Yuejie LI
;
Yonghe GAO
;
Mingrong ZHANG
- Publication Type:Journal Article
- Keywords:
Immittance;
Calibration;
Probe tone;
Calibration chamber
- From:
International Journal of Biomedical Engineering
2013;36(6):336-339
- CountryChina
- Language:Chinese
-
Abstract:
Objective To reduce the error caused by the non-linearity of headphone and device via the design of calibration algorithm for acoustic immittance.Methods Values of calibration chambers with different volumes (0.5,2.0 and 5.0 ml) were measured using the digital detection system.Then,the calibration data tables,for linearity calibration with inputting the values of acoustic immittance,were produced by means of processing the signal of acoustic immittance using the digital calibration algorithm based on the values from the calibration chambers,Results With the low frequency probe tone measurement,it was confirmed that the range of error among various calibration chambers with different volumes was 1％.Conclusion The calibration algorithm enables the improving of the detection accuracy and provides the reliable data for further clinical application.
