Title :
Delayed otoacoustic emissions measuring device, introducing a control signal for sound pressure level evaluation in the ear channel
Author :
Llera, Carlos F. ; Martín, Florelena ; Ferrer, Ángel R Zapata
Author_Institution :
Nat. Clinical Eng. Center, Cuba
Abstract :
A device was built that can be connected to any Evoked Potential Measurement System or Electromiograph, used as an acquisition and averaging signal unit in the time domain. Such a device generates a 1.5 KHz tone burst, through a miniature earphone, obtains delayed evoked otoacoustic emissions (DEOAEs) with a small microphone and amplifies them, fixes the band pass filtering and besides that, it generate a trigger for the signal time analysis. It also generates a 1.5 KHz steady tone control signal for calibrating and comparing with the DEOAEs
Keywords :
acoustic signal processing; acoustic variables measurement; biomedical equipment; biomedical measurement; ear; earphones; microphones; otoacoustic emissions; 1.5 kHz; Electromiograph; Evoked Potential Measurement System; acquisition unit; averaging signal unit; band pass filtering; calibration; control signal; delayed evoked otoacoustic emissions; delayed otoacoustic emissions measuring device; ear channel; miniature earphone; signal time analysis; small microphone; sound pressure level evaluation; steady tone control signal; time domain; tone burst; Band pass filters; Delay; Headphones; Microphones; Operational amplifiers; Pressure control; Pressure measurement; Probes; Signal generators; Transducers;
Conference_Titel :
Engineering in Medicine and Biology Society, 1995., IEEE 17th Annual Conference
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-2475-7
DOI :
10.1109/IEMBS.1995.579850
