[Measurement of otoacoustic emissions by sound card].
A new method in OAE's measurement by computer sound card is introduced. It is a measurement system using SF-1 detector. We designed the appropriate analog filter amplifier peripheral, utilized the mature technology of computer sound card, and recorded the OAE signal using Windows' API function programming by VB. The recorded signals can be analyzed by Matlab, such as digital filtering and Coherence average. The system is, in the main, cost-effective. The statistical results of the experiments proved the reliability of the method.
Du
Yu
Y
School of Information Science and Engineering, Shandong University, Jinan 250100, China.
Nie
Kaibao
K
Liu
Ju
J
D000161:Acoustic Stimulation; D003051:Cochlea / Q000502:physiology; D005071:Evoked Potentials; D006320:Hearing Tests / Q000295:instrumentation*; D006801:Humans; D017084:Otoacoustic Emissions, Spontaneous / Q000502:physiology*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation; D013016:Sound