Hearing Test Tympanometer Audiogram 4.3 Inch Touch Screen Hearing Test

• Customization: Available
• Application: Home, Medical Institution
• Product Name: Hearing Test Machine
• Model NO.: YJ-NA02
• Model: Yj-Na02
• Test Method: Teoae, Dpoae
• Sampling Rate: 48kHz
• Stimulus Frequency: 0.8kHz~5kHz
• Trademark: FORERMED
• Origin: China

Product Description

Product Description

Portable 4.3 inch touch screen hearing test audiometer

Introduction of Otoacoustic

Definition of Otoacoustic Emissions: Otoacoustic Emissions is an audio energy generated from the cochlea, released through the ossicular chain and the tympanic membrane and released into the external auditory canal (Kemp, 1986). It reflects that the cochlea can not only passively sense the sound signal, but also has the function of generating sound energy actively.

Otoacoustic emission is the product of the movement of hair cells in the cochlea, the modulation of the outer hair cell to the basement membrane, which amplifies the weak acoustic signal. Its clinical significance is that it provides us with a means of detecting cochlear amplification and functional integrity of outer hair cells.

Technical specification

Product	Hearing Screener
Operating environment noise	≤50 dbSPL
Test Method	TEOAE, DPOAE
TEOAE performance
Assessment Method	Noise - weighted average, effective signal peak calculation sound
stimulation	Click(Nonlinear)
sampling rate	48KHz
Stimulus frequency	0.8kHZ~5kHZ
Stimulation level	60, 70, 83dBspl
Display Content	Statistical waveform, measurement progress, signal to noise ratio, total reaction energy, Similarity degree
DPOAE performance
Assessment Method	Phase statistics,Noise - weighted average ,effective signal peak calculation
sound stimulation	pure tone
sampling rate	48KHz
Test frequency	f1:1kHZ~6kHZ f2: 1.5kHz,2.01kHz, 3.98kHz,6kHz
Display Content	Listening graph, measurement progress, DPOAE detection level, signal to noise ratio
Probe performance
Probe cable	ø3.8mm,8 core round wire
Probe body	37* 20 *12.6 mm
OAE screening
size	188* 90 * 35 mm
Weight	420 g
Interface	Full English interface, graphics and data dual display
Screen	Color TFT LCD Touch screen
Button activation mode	Capacitive touch (finger touch)
back light	adjust LED
Screen size	4.3 inch(95mm*53.8mm)
Screen Resolutions	480*272
memory	8G TFcard,Unlimited number of storage, suggest 2000 ID test information transfer
Battery type	Rechargeable 7.4V lithium battery
power	< 15 W
Estimated battery usage	At least continuous work 4 h
Charging time	< 2 h

Detailed Photos

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